Abstract

“Giant” CdSe/CdS core/shell nanocrystals (NCs) were synthesized with thick CdS shell (15 monolayers), and the x-ray diffraction (XRD) measurement indicates there is a zinc blende phase in the thick CdS shell, whereas it transformed into wurtzite phase under 5 min radiation with a 400 nm, 594μJ/cm2 femtosecond (fs) laser beam. The evolution of the NCs’ spontaneous emission under the fs laser radiation was recorded with a Hamamatsu streak camera. The as-synthesized NCs exhibit an amplified spontaneous emission (ASE) at 530 nm, which comes from a bulk-like CdS shell due to the interfacial potential barrier, which could slow down the relaxation of holes from the shell to the core. After being annealed by an fs laser, the ASE of the g-NCs is transferred from a bulk-like CdS shell to a quantum-confined CdSe core because the phase transformation determined with the XRD measurement could remove the interfacial barrier. Besides the ASE at 643 nm, two shorter-wavelength ASE peaks at 589 and 541 nm, corresponding to optical transitions of the second (1P) and third (1D) electron quantization shells of the CdSe core, also appear, thus indicating that Auger recombination is effectively suppressed.

© 2015 Chinese Laser Press

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References

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  1. V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
    [Crossref]
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    [Crossref]
  3. Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
    [Crossref]
  4. N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
    [Crossref]
  5. F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
    [Crossref]
  6. Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
    [Crossref]
  7. Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
    [Crossref]
  8. C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
    [Crossref]
  9. S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
    [Crossref]
  10. S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
    [Crossref]
  11. R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
    [Crossref]
  12. Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).
  13. Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
    [Crossref]
  14. B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
    [Crossref]
  15. S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
    [Crossref]
  16. X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
    [Crossref]
  17. F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
    [Crossref]
  18. A. L. Efros and A. L. Efros, “Interband absorption of light in a semiconductor sphere,” Sov. Phys. Semicond. 16, 772–775 (1982).
  19. A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
    [Crossref]

2014 (3)

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

2013 (2)

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

2012 (2)

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

2011 (2)

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

2009 (1)

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

2008 (2)

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
[Crossref]

2007 (2)

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

2002 (1)

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

2000 (2)

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, “Quantization of multiparticle Auger rates in semiconductor quantum dots,” Science 287, 1011–1013 (2000).
[Crossref]

1997 (1)

X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
[Crossref]

1982 (1)

A. L. Efros and A. L. Efros, “Interband absorption of light in a semiconductor sphere,” Sov. Phys. Semicond. 16, 772–775 (1982).

Achermann, M.

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

Alivisatos, A. P.

X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
[Crossref]

Bae, W. K.

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

Battaglia, D. M.

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

Bawendi, M. G.

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, “Quantization of multiparticle Auger rates in semiconductor quantum dots,” Science 287, 1011–1013 (2000).
[Crossref]

Beverina, L.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

Bezel, I.

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

Blackman, B.

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

Brovelli, S.

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

Bussian, D. A.

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

Casson, J. L.

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

Chan, Y.

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

Chen, Y.

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

Chon, B.

S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
[Crossref]

Colombo, A.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

Efros, A. L.

A. L. Efros and A. L. Efros, “Interband absorption of light in a semiconductor sphere,” Sov. Phys. Semicond. 16, 772–775 (1982).

A. L. Efros and A. L. Efros, “Interband absorption of light in a semiconductor sphere,” Sov. Phys. Semicond. 16, 772–775 (1982).

Eisler, H.-J.

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

Galland, C.

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

García-Santamaría, F.

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

Ghosh, Y.

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

Giovanella, U.

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

Gonzalez, B. S.

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

Hollingsworth, J. A.

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

Htoon, H.

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

Hua, Z.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Ivanov, S. A.

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

Jagjit, N.

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

Johnson, M. B.

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

Joo, T.

S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
[Crossref]

Kadavanich, A. V.

X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
[Crossref]

Klimov, V. I.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, “Quantization of multiparticle Auger rates in semiconductor quantum dots,” Science 287, 1011–1013 (2000).
[Crossref]

Krahne, R.

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

Lanzani, G.

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

Leatherdale, C. A.

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, “Quantization of multiparticle Auger rates in semiconductor quantum dots,” Science 287, 1011–1013 (2000).
[Crossref]

Liao, Y.

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

Lim, S. J.

S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
[Crossref]

Liu, Y.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Lorenzon, M.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

Lupo, M. G.

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

Malko, A.

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

Malko, A. V.

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

Mangum, B. D.

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Manna, L.

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

McBranch, D. W.

V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, “Quantization of multiparticle Auger rates in semiconductor quantum dots,” Science 287, 1011–1013 (2000).
[Crossref]

Meinardi, F.

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

Mikhailovsky, A. A.

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, “Quantization of multiparticle Auger rates in semiconductor quantum dots,” Science 287, 1011–1013 (2000).
[Crossref]

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

Mishima, T. D.

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

Mishra, N.

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

Padilha, L. A.

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

Park, Y.-S.

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

Peng, X.

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
[Crossref]

Petruska, M. A.

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

Piryatinski, A.

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

Schaller, R. D.

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

Schlamp, M. C.

X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
[Crossref]

Shin, S. K.

S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
[Crossref]

Simonutti, R.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

Sum, T. C.

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

Vela, J.

Y.-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. García-Santamaría, J. A. Hollingsworth, V. I. Klimov, and H. Htoon, “Near-unity quantum yields of biexciton emission from CdSe/CdS nanocrystals measured using single-particle spectroscopy,” Phys. Rev. Lett. 106, 187401 (2011).
[Crossref]

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

Velizhanin, K. A.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

Viswanatha, R.

F. Meinardi, A. Colombo, K. A. Velizhanin, R. Simonutti, M. Lorenzon, L. Beverina, R. Viswanatha, V. I. Klimov, and S. Brovelli, “Large-area luminescent solar concentrators based on ‘Stokes-shift-engineered’ nanocrystals in a mass-polymerized PMMA matrix,” Nat. Photonics 8, 392–399 (2014).
[Crossref]

Wang, R.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Wang, X.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Werder, D. J.

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

Williams, D. J.

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

Xiao, M.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Xing, G.

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

Xu, S.

V. I. Klimov, A. A. Mikhailovsky, S. Xu, A. Malko, J. A. Hollingsworth, C. A. Leatherdale, H.-J. Eisler, and M. G. Bawendi, “Optical gain and stimulated emission in nanocrystal quantum dots,” Science 290, 314–317 (2000).
[Crossref]

Zavelani-Rossi, M.

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

Zhang, C.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Zhang, H.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Zhang, J.

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Adv. Mater. (2)

Y. Liao, G. Xing, N. Mishra, T. C. Sum, and Y. Chan, “Low threshold, amplified spontaneous emission from core-seeded semiconductor nanotetrapods incorporated into a sol-gel matrix,” Adv. Mater. 24, OP159–OP164 (2012).

Y. Liu, C. Zhang, H. Zhang, R. Wang, Z. Hua, X. Wang, J. Zhang, and M. Xiao, “Broadband optical non-linearity induced by charge transfer excitons in type-II CdSe/ZnTe nanocrystals,” Adv. Mater. 25, 4397–4402 (2013).
[Crossref]

Appl. Phys. Lett. (2)

R. Krahne, M. Zavelani-Rossi, M. G. Lupo, L. Manna, and G. Lanzani, “Amplified spontaneous emission from core and shell transitions in CdSe/CdS nanorods fabricated by seeded growth,” Appl. Phys. Lett. 98, 063105 (2011).
[Crossref]

A. V. Malko, A. A. Mikhailovsky, M. A. Petruska, J. A. Hollingsworth, H. Htoon, M. G. Bawendi, and V. I. Klimov, “From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids,” Appl. Phys. Lett. 81, 1303–1305 (2002).
[Crossref]

Chem. Mater. (1)

B. Blackman, D. M. Battaglia, T. D. Mishima, M. B. Johnson, and X. Peng, “Control of the morphology of complex semiconductor nanocrystals with a type II heterojunction, dots vs peanuts, by thermal cycling,” Chem. Mater. 19, 3815–3821 (2007).
[Crossref]

J. Am. Chem. Soc. (3)

X. Peng, M. C. Schlamp, A. V. Kadavanich, and A. P. Alivisatos, “Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility,” J. Am. Chem. Soc. 119, 7019–7029 (1997).
[Crossref]

Y. Chen, J. Vela, H. Htoon, J. L. Casson, D. J. Werder, D. A. Bussian, V. I. Klimov, and J. A. Hollingsworth, “‘Giant’ multishell CdSe nanocrystal quantum dots with suppressed blinking,” J. Am. Chem. Soc. 130, 5026–5027 (2008).
[Crossref]

Y. Ghosh, B. D. Mangum, J. L. Casson, D. J. Williams, H. Htoon, and J. A. Hollingsworth, “New insights into the complexities of shell growth and the strong influence of particle volume in nonblinking ‘giant’ core/shell nanocrystal quantum dots,” J. Am. Chem. Soc. 134, 9634–9643 (2012).
[Crossref]

J. Phys. Chem. C. (2)

N. Jagjit, S. A. Ivanov, M. Achermann, I. Bezel, A. Piryatinski, and V. I. Klimov, “Light amplification in the single-exciton regime using exciton-exciton repulsion in type-II nanocrystal quantum dots,” J. Phys. Chem. C. 111, 15382–15390 (2007).
[Crossref]

S. J. Lim, B. Chon, T. Joo, and S. K. Shin, “Synthesis and characterization of zinc-blende CdSe-based core/shell nanocrystals and their luminescence in water,” J. Phys. Chem. C. 112, 1744–1747 (2008).
[Crossref]

Nano Lett. (4)

F. García-Santamaría, Y. Chen, J. Vela, R. D. Schaller, J. A. Hollingsworth, and V. I. Klimov, “Suppressed Auger recombination in “giant” nanocrystals boosts optical gain performance,” Nano Lett. 9, 3482–3488 (2009).
[Crossref]

C. Galland, S. Brovelli, W. K. Bae, L. A. Padilha, F. Meinardi, and V. I. Klimov, “Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk Nanocrystals,” Nano Lett. 13, 321–328 (2013).
[Crossref]

S. Brovelli, W. K. Bae, C. Galland, U. Giovanella, F. Meinardi, and V. I. Klimov, “Dual-color electroluminescence from dot-in-bulk nanocrystals,” Nano Lett. 14, 486–494 (2014).
[Crossref]

S. Brovelli, W. K. Bae, F. Meinardi, B. S. Gonzalez, M. Lorenzon, C. Galland, and V. I. Klimov, “Electrochemical control of two-color emission from colloidal dot-in-bulk nanocrystals,” Nano Lett. 14, 3855–3863 (2014).
[Crossref]

Nat. Photonics (1)

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Figures (7)

Fig. 1.
Fig. 1. (a) Band structure of a CdSe/CdS core/shell g-NC features an energetic barrier in the valence band associated with an interfacial ZB CdS layer, which separates a thick WZ CdS outer layer from the ZB CdSe core. (b) Transmission electron microscopy images of CdSe cores and (c) their corresponding CdSe/CdS core/shell (15 MLs) g-NCs. (d) XRD patterns of as-synthesized and annealed CdSe/CdS core/shell (15 MLs) g-NCs. Vertical lines indicate WZ and ZB CdS bulk reflections.
Fig. 2.
Fig. 2. (a) Absorption (solid line) and PL (dash line) spectra of the CdSe core and its corresponding CdSe/CdS core/shell NCs. (b) Time-resolved PL decay spectra of the CdSe core and its corresponding CdSe/CdS core/shell NCs. The solid lines are the bi-exponential fitting curves.
Fig. 3.
Fig. 3. (a) Streak camera image of time-resolved PL spectra of CdSe/CdS core/shell (15 MLs) g-NCs solution for a laser fluence of 5mJ/cm2. PL spectra of the g-NCs as a function of time delay with respect to the laser pulse: (b) delay 0 ns, integrated in a 7 ns gate; (c) delay 11 ns, gate 87 ns. (d) Time-resolved PL decay spectra of the g-NCs measured at 646 nm (red trace) and at 504 nm (green trace).
Fig. 4.
Fig. 4. Emission spectra of a close-packed film of (a) as-synthesized and (c) annealed CdSe/CdS core/shell (15 MLs) g-NCs measured with different per-pulse fluences. Emission intensity versus pump fluence at the positions of ASE and SPE peaks observed for the (b) as-synthesized and (d) annealed g-NCs.
Fig. 5.
Fig. 5. Time-dependent PL intensity trace of (a) as-synthesized and (b) annealed single CdSe/CdS core/shell (15 MLs) g-NCs (bin size is 100 ms). Histograms indicate the distribution of intensities observed in the trace.
Fig. 6.
Fig. 6. (a) Emission spectra of a close-packed film of annealed CdSe/CdS core/shell (15 MLs) g-NCs as a function of stripe length obtained from VSL measurement. The pump fluence is 396μJ/cm2. (b) Emission intensity versus pump stripe length at the position of ASE peak (643 nm) observed for the annealed g-NCs.
Fig. 7.
Fig. 7. (a) Streak camera image of time-resolved emission spectra of a close-packed film of annealed CdSe/CdS core/shell (15 MLs) g-NCs for a laser fluence of 891μJ/cm2. (b) Emission spectra of the annealed g-NCs (delay 0 ns, integrated in a 50 ps gate). (c) Time-resolved emission decay spectra measured at the position of ASE peaks (633, 580, and 525 nm) observed for the annealed g-NCs.

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