Abstract

The formation of single-phase, morphological information and the impurities present in the developed phosphor has been identified by using x-ray diffraction, scanning electron microscope, and Fourier transform infrared analysis. Nontunable intense green upconversion emission from single-phase tetragonal Ho3+-Yb3+-codoped BaZnLa2O5 phosphor upon 980 nm excitation has been reported. The effect of codoping with Yb3+ ions on the upconversion emission bands in BaZnLa2O5:Ho3+ phosphor has been discussed, and the possible upconversion mechanisms involved have been explained. The experimental results confirm the suitability of the developed phosphor in display devices and security applications.

© 2014 Optical Society of America

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  2. Y. C. Chen and T. M. Chen, “Improvement of conversion efficiency of silicon solar cells using up-conversion molybdate La2Mo2O9:Yb, R (R = Er, Ho) phosphors,” J. Rare Earth 29, 723–726 (2011).
    [Crossref]
  3. A. A. D. Adikaari, I. Etchart, P.-H. Guering, M. Berard, S. R. P. Sliva, A. K. Cheetham, and R. J. Curry, “Near infrared up-conversion in organic photovoltaic devices using an efficient Yb3+:Ho3+ co-doped Ln2BaZnO5 (Ln = Y, Gd) phosphor,” J. Appl. Phys. 111, 094502 (2012).
    [Crossref]
  4. P. Sharma, S. Brown, G. Walter, S. Santra, and B. Moudgil, “Nanoparticles for bioimaging,” Adv. Colloid Interface Sci. 123–126, 471–485 (2006).
    [Crossref]
  5. A. Pandey and V. K. Rai, “Improved luminescence and temperature sensing performance of Ho3+-Yb3+-Zn2+:Y2O3 phosphor,” Dalton Trans. 4, 11005–11011 (2013).
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    [Crossref]
  7. R. L. Toquin and A. K. Cheetham, “Red-emitting cerium-based phosphor materials for solid-state lighting application,” Chem. Phys. Lett. 423, 352–356 (2006).
    [Crossref]
  8. D. S. Zang, J. H. Song, D. H. Park, Y. C. Kim, and D. H. Yoon, “New fast-decaying green and red phosphors for 3D application of plasma display panels,” J. Lumin. 129, 1088–1093 (2009).
    [Crossref]
  9. Y. S. Fran and T. Y. Tseng, “Preparation of aluminum film on phosphor screen for field emission display,” Mater. Chem. Phys. 61, 166–168 (1999).
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  10. A. Gnach and A. Bednarkiewicz, “Lanthanide-doped up-converting nanoparticles: merits and challenges,” Nano Today 7(6), 532–563 (2012).
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  11. J. Shen, L. Zhao, and G. Han, “Lanthanide-doped upconverting luminescent nanoparticle platforms for optical imaging-guided drug delivery and therapy,” Adv. Drug Delivery Rev. 65, 744–755 (2013).
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    [Crossref]
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    [Crossref]
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  19. J. Yang, J. Ding, S. Xiao, Y. Liang, and J. Chai, “Luminescence properties of Yb3+/Ho3+ co-doped Sr3YAl2O7.5 and Sr3LuAl2O7.5 powders,” J. Alloys Compd. 577, 86–89 (2013).
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    [Crossref]
  21. B. Dong, T. Yang, and M. K. Lei, “Optical high temperature sensor based on green up-conversion emissions in Er3+ doped Al2O3,” Sens. Actuators B 123, 667–670 (2007).
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    [Crossref]
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    [Crossref]
  24. Z. Mu, Y. Hu, L. Chen, X. Wang, G. Ju, Z. Yang, and Y. Jin, “A single-phase, color-tunable, broadband-excited white light-emitting phosphor Y2WO6:Sm3+,” J. Lumin. 146, 33–36 (2014).
    [Crossref]
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    [Crossref]
  26. W. L. Feng, Y. Jin, Y. Wu, D. F. Li, and A. K. Cai, “Co-precipitation synthesis and photoluminescence properties of Ba1-xMoO4:xEu3+ red phosphors,” J. Lumin. 134, 614–617 (2013).
    [Crossref]
  27. H. Muller-Buschbaum and S. Mohr, “Zur Kenntnis von BaZnTb2O5 und BaZnLa2O5,” J. Less-Common Met. 170, 127–133 (1991).
    [Crossref]
  28. F. Lei and B. Yan, “Hydrothermal synthesis and luminescence of CaMO4:RE3+ (M = W, Mo; RE = Eu, Tb) submicro-phosphors,” J. Solid State Chem. 181, 855–862 (2008).
    [Crossref]
  29. K. Venkateswarlu, A. C. Bose, and N. Rameshbabu, “X-ray peak broadening studies of nanocrystalline hydroxyapatite by Williamson–Hall analysis,” Physica B 405, 4256–4261 (2010).
    [Crossref]
  30. A. K. Zak, W. H. A. Majid, M. E. Abrishami, and R. Yousef, “X-ray analysis of ZnO nanoparticles by Williamson-Hall and sizes train plot methods,” Solid State Sci. 13, 251–256 (2011).
    [Crossref]
  31. G. Tripathi, V. K. Rai, and S. B. Rai, “Spectroscopy and upconversion of Dy3+ doped in sodium zinc phosphate glass,” Spectrochim. Acta A 62, 1120–1124 (2005).
    [Crossref]
  32. G. Tripathi, V. K. Rai, and S. B. Rai, “Upconversion and temperature sensing behavior of Er3+ doped Bi2O3–Li2O-BaO-PbO tertiary glass,” Opt. Mater. 30, 201–206 (2007).
    [Crossref]
  33. L. Li, H. Lin, X. Zhao, Y. Wang, X. Zhou, C. Ma, and X. Wei, “Effect of Yb3+ concentration on upconversion luminescence in Yb3+, Tm3+ co-doped Lu2O3 nanophosphors,” J. Alloys Compd. 586, 555–560 (2014).
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    [Crossref]
  36. T. Passuello, F. Piccinelli, M. Pedroni, M. Bettinelli, F. Mangiarini, R. Naccache, F. Vetrone, J. A. Capobianco, and A. Speghini, “White light upconversion of nanocrystalline Er/Tm/Yb doped tetragonal Gd4O3F6,” Opt. Mater. 33, 643–646 (2011).
    [Crossref]
  37. Z. Yang, Z. Zhao, B. Liu, and Y. Wang, “Preparation and up-conversion luminescence of b-SiAlON:Ln3+ (Ln = Yb/Ho, Yb/Er) microparticles,” Mater. Lett. 93, 32–35 (2013).
    [Crossref]
  38. S. Choi, S. W. Tae, J.-H. Seo, and H.-K. Jung, “Preparation of blue-emitting CaMgSi2O6:Eu2+ phosphors in reverse micellar system and their application to transparent emissive display devices,” J. Solid State Chem. 184, 1540–1544 (2011).
    [Crossref]
  39. A. Pandey, V. K. Rai, R. Dey, and K. Kumar, “Enriched green upconversion emission in combustion synthesized Y2O3:Ho3+ Yb3+ phosphor,” Mater. Chem. Phys. 139, 483–488 (2013).
    [Crossref]
  40. C. R. Ronda, “Recent achievements in research on phosphor for lamps and displays,” J. Lumin. 49, 72–74 (1997).
  41. D. K. Mohanty and V. K. Rai, “Photoluminescence studies of Pr3+ doped lead germanate glass,” J. Fluoresc. 21, 1455–1460 (2011).
    [Crossref]
  42. A. A. Kaminskii, A. O. Ivanov, S. E. Sarkisov, I. V. Mochalov, V. A. Fedorov, and L. Li, “Comprehensive investigations of the spectral and lasing characteristics of the LuAlO3 crystal doped with Nd3+,” Sov. Phys. JETP 44, 516–524 (1976).
  43. B. J. Chen, G. C. Righini, M. Bettinelli, and A. Speghini, “A comparison between different methods of calculating the radiative lifetime of the 4I13/2 level of Er3+ in various glasses,” J. Non-Cryst. Solids 322, 319–323 (2003).
    [Crossref]
  44. K. Zou, H. Guo, M. Lu, W. Li, C. Hou, W. Wei, J. He, B. Peng, and B. Xiangli, “Broad-spectrum and long-lifetime emissions of Nd3+ ions in lead fluorosilicate glass,” Opt. Express 17, 10001–10009 (2009).
    [Crossref]
  45. T. A. A. de Assumpção, L. R. P. Kassab, A. S. L. Gomes, C. B. de Araújo, and N. U. Wetter, “Influence of the heat treatment on the nucleation of silver nanoparticles in Tm3+ doped PbO-GeO2 glasses,”Appl. Phys. B 103, 165–169 (2011).
    [Crossref]
  46. K. Mishra, N. K. Giri, and S. B. Rai, “Preparation and characterization of upconversion luminescent Tm3+/Yb3+ co-doped Y2O3 nanophosphor,” Appl. Phys. B 103, 863–875 (2011).
    [Crossref]
  47. D. K. Mohanty, V. K. Rai, and Y. Dwivedi, “Yb3+ sensitized Tm3+ upconversion in tellurite lead oxide glass,” Spectrochim. Acta Part A 89, 264–267 (2012).
    [Crossref]
  48. C. Zhao, X. Kong, X. Liu, L. Tu, F. Wu, Y. Zhang, K. Liu, Q. Zeng, and H. Zhang, “Li+ ion doping: an approach for improving the crystallinity and upconversion emissions of NaYF4:Yb3+, Tm3+ nanoparticles,” Nanoscale 5, 8084–8089 (2013).
    [Crossref]
  49. V. Singh, V. K. Rai, I. Ledoux-Rak, L. Badie, and H. Y. Kwak, “Visible upconversion and infrared luminescence investigations of Al2O3 powders doped with Er3+, Yb3+ and Zn2+ ions,” Appl. Phys. B 97, 805–809 (2009).
    [Crossref]
  50. R. Dey and V. K. Rai, “Yb3+ sensitized Er3+ doped La2O3 phosphor in temperature sensors and display devices,” Dalton Trans. 43, 111–118 (2014).
    [Crossref]

2014 (3)

Z. Mu, Y. Hu, L. Chen, X. Wang, G. Ju, Z. Yang, and Y. Jin, “A single-phase, color-tunable, broadband-excited white light-emitting phosphor Y2WO6:Sm3+,” J. Lumin. 146, 33–36 (2014).
[Crossref]

L. Li, H. Lin, X. Zhao, Y. Wang, X. Zhou, C. Ma, and X. Wei, “Effect of Yb3+ concentration on upconversion luminescence in Yb3+, Tm3+ co-doped Lu2O3 nanophosphors,” J. Alloys Compd. 586, 555–560 (2014).
[Crossref]

R. Dey and V. K. Rai, “Yb3+ sensitized Er3+ doped La2O3 phosphor in temperature sensors and display devices,” Dalton Trans. 43, 111–118 (2014).
[Crossref]

2013 (9)

C. Zhao, X. Kong, X. Liu, L. Tu, F. Wu, Y. Zhang, K. Liu, Q. Zeng, and H. Zhang, “Li+ ion doping: an approach for improving the crystallinity and upconversion emissions of NaYF4:Yb3+, Tm3+ nanoparticles,” Nanoscale 5, 8084–8089 (2013).
[Crossref]

A. Pandey, V. K. Rai, R. Dey, and K. Kumar, “Enriched green upconversion emission in combustion synthesized Y2O3:Ho3+ Yb3+ phosphor,” Mater. Chem. Phys. 139, 483–488 (2013).
[Crossref]

Z. Yang, Z. Zhao, B. Liu, and Y. Wang, “Preparation and up-conversion luminescence of b-SiAlON:Ln3+ (Ln = Yb/Ho, Yb/Er) microparticles,” Mater. Lett. 93, 32–35 (2013).
[Crossref]

W. L. Feng, Y. Jin, Y. Wu, D. F. Li, and A. K. Cai, “Co-precipitation synthesis and photoluminescence properties of Ba1-xMoO4:xEu3+ red phosphors,” J. Lumin. 134, 614–617 (2013).
[Crossref]

J. Yang, J. Ding, S. Xiao, Y. Liang, and J. Chai, “Luminescence properties of Yb3+/Ho3+ co-doped Sr3YAl2O7.5 and Sr3LuAl2O7.5 powders,” J. Alloys Compd. 577, 86–89 (2013).
[Crossref]

A. Pandey and V. K. Rai, “Improved luminescence and temperature sensing performance of Ho3+-Yb3+-Zn2+:Y2O3 phosphor,” Dalton Trans. 4, 11005–11011 (2013).

J. Shen, L. Zhao, and G. Han, “Lanthanide-doped upconverting luminescent nanoparticle platforms for optical imaging-guided drug delivery and therapy,” Adv. Drug Delivery Rev. 65, 744–755 (2013).
[Crossref]

V. K. Rai, A. Panday, and R. Dey, “Photoluminescence study of Y2O3:Er3+-Eu3+-Yb3+ phosphor for lighting and sensing applications,” J. Appl. Phys. 113, 083104 (2013).

Y. Xu, Y. Wang, L. Shi, L. Xing, and X. Tan, “Bright white upconversion luminescence in Ho3+/Yb3+/Tm3+ triple doped CaWO4 polycrystals,” Opt. Laser Technol. 54, 50–52 (2013).
[Crossref]

2012 (5)

V. R. Bandi, B. K. Grandhe, K. Jang, H.-S. Lee, D. S. Shin, S.-S. Yi, and J.-H. Jeong, “Citric based sol–gel synthesis and luminescence characteristics of CaLa2ZnO5:Eu3+phosphors for blue LED excited white LEDs,” J. Alloys Compd. 512, 264–269 (2012).
[Crossref]

A. Gnach and A. Bednarkiewicz, “Lanthanide-doped up-converting nanoparticles: merits and challenges,” Nano Today 7(6), 532–563 (2012).
[Crossref]

K. V. R. Murthy, “Nano phosphors for light emitting diodes (LEDs) synthesis and characterization,” Rec. Res. Sci. Technol. 4, 8–13 (2012).

A. A. D. Adikaari, I. Etchart, P.-H. Guering, M. Berard, S. R. P. Sliva, A. K. Cheetham, and R. J. Curry, “Near infrared up-conversion in organic photovoltaic devices using an efficient Yb3+:Ho3+ co-doped Ln2BaZnO5 (Ln = Y, Gd) phosphor,” J. Appl. Phys. 111, 094502 (2012).
[Crossref]

D. K. Mohanty, V. K. Rai, and Y. Dwivedi, “Yb3+ sensitized Tm3+ upconversion in tellurite lead oxide glass,” Spectrochim. Acta Part A 89, 264–267 (2012).
[Crossref]

2011 (10)

D. K. Mohanty and V. K. Rai, “Photoluminescence studies of Pr3+ doped lead germanate glass,” J. Fluoresc. 21, 1455–1460 (2011).
[Crossref]

T. A. A. de Assumpção, L. R. P. Kassab, A. S. L. Gomes, C. B. de Araújo, and N. U. Wetter, “Influence of the heat treatment on the nucleation of silver nanoparticles in Tm3+ doped PbO-GeO2 glasses,”Appl. Phys. B 103, 165–169 (2011).
[Crossref]

K. Mishra, N. K. Giri, and S. B. Rai, “Preparation and characterization of upconversion luminescent Tm3+/Yb3+ co-doped Y2O3 nanophosphor,” Appl. Phys. B 103, 863–875 (2011).
[Crossref]

Y. C. Chen and T. M. Chen, “Improvement of conversion efficiency of silicon solar cells using up-conversion molybdate La2Mo2O9:Yb, R (R = Er, Ho) phosphors,” J. Rare Earth 29, 723–726 (2011).
[Crossref]

Y. S. Chang, “Blue emitting phosphors of BaLa2ZnO5 activated by bismuth ions,” J. Electrochem. Soc. 158, J115–J119 (2011).
[Crossref]

Y. He, M. Zhao, Y. Song, G. Zhao, and X. Ai, “Effect of Bi3+ on fluorescence properties of YPO4:Dy3+ phosphors synthesized by a modified chemical co-precipitation method,” J. Lumin. 131, 1144–1148 (2011).
[Crossref]

S. Choi, S. W. Tae, J.-H. Seo, and H.-K. Jung, “Preparation of blue-emitting CaMgSi2O6:Eu2+ phosphors in reverse micellar system and their application to transparent emissive display devices,” J. Solid State Chem. 184, 1540–1544 (2011).
[Crossref]

N. Niu, P. Yang, Y. Liu, C. Li, D. Wang, S. Gai, and F. He, “Controllable synthesis and up-conversion properties of tetragonal BaYF5:Yb/Ln (Ln = Er, Tm, and Ho) nanocrystals,” J. Colloid Interface Sci. 362, 389–396 (2011).
[Crossref]

T. Passuello, F. Piccinelli, M. Pedroni, M. Bettinelli, F. Mangiarini, R. Naccache, F. Vetrone, J. A. Capobianco, and A. Speghini, “White light upconversion of nanocrystalline Er/Tm/Yb doped tetragonal Gd4O3F6,” Opt. Mater. 33, 643–646 (2011).
[Crossref]

A. K. Zak, W. H. A. Majid, M. E. Abrishami, and R. Yousef, “X-ray analysis of ZnO nanoparticles by Williamson-Hall and sizes train plot methods,” Solid State Sci. 13, 251–256 (2011).
[Crossref]

2010 (3)

K. Venkateswarlu, A. C. Bose, and N. Rameshbabu, “X-ray peak broadening studies of nanocrystalline hydroxyapatite by Williamson–Hall analysis,” Physica B 405, 4256–4261 (2010).
[Crossref]

F. He, P. Yang, N. Niu, W. Wang, S. Gai, D. Wang, and J. Lin, “Hydrothermal synthesis and luminescent properties of YVO4:Ln3+ (Ln = Eu, Dy, and Sm) microspheres,” J. Colloid Interface Sci. 343, 71–78 (2010).
[Crossref]

Z. Xia, W. Zhou, H. Du, and J. Sun, “Synthesis and spectral analysis of Yb3+/Tm3+/Ho3+-doped Na0.5Gd0.5WO4 phosphor to achieve white upconversion luminescence,” Mater. Res. Bull. 45, 1199–1202 (2010).
[Crossref]

2009 (4)

G. S. Maciel, R. B. Guimaraes, P. G. Barreto, I. C. S. Carvalho, and N. Rakov, “The influence of Yb3+ doping on the upconversion luminescence of Pr3+ in aluminum oxide based powders prepared by combustion synthesis,” Opt. Mater. 31, 1735–1740 (2009).
[Crossref]

D. S. Zang, J. H. Song, D. H. Park, Y. C. Kim, and D. H. Yoon, “New fast-decaying green and red phosphors for 3D application of plasma display panels,” J. Lumin. 129, 1088–1093 (2009).
[Crossref]

V. Singh, V. K. Rai, I. Ledoux-Rak, L. Badie, and H. Y. Kwak, “Visible upconversion and infrared luminescence investigations of Al2O3 powders doped with Er3+, Yb3+ and Zn2+ ions,” Appl. Phys. B 97, 805–809 (2009).
[Crossref]

K. Zou, H. Guo, M. Lu, W. Li, C. Hou, W. Wei, J. He, B. Peng, and B. Xiangli, “Broad-spectrum and long-lifetime emissions of Nd3+ ions in lead fluorosilicate glass,” Opt. Express 17, 10001–10009 (2009).
[Crossref]

2008 (3)

K. Byrappa, M. K. Devaraju, J. R. Paramesh, B. Basavalingu, and K. Soga, “Hydrothermal synthesis and characterization of LaPO4 for bio-imaging phosphors,” J. Mater. Sci. 43, 2229–2233 (2008).
[Crossref]

D. K. Chatterjee, A. J. Rufaihah, and Y. Zhang, “Upconversion fluorescence imaging of cells and small animals using lanthanide doped nanocrystals,” Biomaterials 29, 937–943 (2008).
[Crossref]

F. Lei and B. Yan, “Hydrothermal synthesis and luminescence of CaMO4:RE3+ (M = W, Mo; RE = Eu, Tb) submicro-phosphors,” J. Solid State Chem. 181, 855–862 (2008).
[Crossref]

2007 (2)

B. Dong, T. Yang, and M. K. Lei, “Optical high temperature sensor based on green up-conversion emissions in Er3+ doped Al2O3,” Sens. Actuators B 123, 667–670 (2007).
[Crossref]

G. Tripathi, V. K. Rai, and S. B. Rai, “Upconversion and temperature sensing behavior of Er3+ doped Bi2O3–Li2O-BaO-PbO tertiary glass,” Opt. Mater. 30, 201–206 (2007).
[Crossref]

2006 (3)

B. S. Richards, “Enhancing the performance of silicon solar cells via the application of passive luminescence conversion layers,” Sol. Energy Mater. Sol. Cells 90, 2329–2337 (2006).
[Crossref]

R. L. Toquin and A. K. Cheetham, “Red-emitting cerium-based phosphor materials for solid-state lighting application,” Chem. Phys. Lett. 423, 352–356 (2006).
[Crossref]

P. Sharma, S. Brown, G. Walter, S. Santra, and B. Moudgil, “Nanoparticles for bioimaging,” Adv. Colloid Interface Sci. 123–126, 471–485 (2006).
[Crossref]

2005 (1)

G. Tripathi, V. K. Rai, and S. B. Rai, “Spectroscopy and upconversion of Dy3+ doped in sodium zinc phosphate glass,” Spectrochim. Acta A 62, 1120–1124 (2005).
[Crossref]

2003 (1)

B. J. Chen, G. C. Righini, M. Bettinelli, and A. Speghini, “A comparison between different methods of calculating the radiative lifetime of the 4I13/2 level of Er3+ in various glasses,” J. Non-Cryst. Solids 322, 319–323 (2003).
[Crossref]

2000 (1)

Y. C. Kang, H. S. Roh, and S. B. Park, “Preparation of Y2O3:Eu phosphor particles of filled morphology at high precursor concentrations by spray pyrolysis,” Adv. Mater. 12, 451–453 (2000).
[Crossref]

1999 (1)

Y. S. Fran and T. Y. Tseng, “Preparation of aluminum film on phosphor screen for field emission display,” Mater. Chem. Phys. 61, 166–168 (1999).
[Crossref]

1997 (1)

C. R. Ronda, “Recent achievements in research on phosphor for lamps and displays,” J. Lumin. 49, 72–74 (1997).

1991 (1)

H. Muller-Buschbaum and S. Mohr, “Zur Kenntnis von BaZnTb2O5 und BaZnLa2O5,” J. Less-Common Met. 170, 127–133 (1991).
[Crossref]

1976 (1)

A. A. Kaminskii, A. O. Ivanov, S. E. Sarkisov, I. V. Mochalov, V. A. Fedorov, and L. Li, “Comprehensive investigations of the spectral and lasing characteristics of the LuAlO3 crystal doped with Nd3+,” Sov. Phys. JETP 44, 516–524 (1976).

Abrishami, M. E.

A. K. Zak, W. H. A. Majid, M. E. Abrishami, and R. Yousef, “X-ray analysis of ZnO nanoparticles by Williamson-Hall and sizes train plot methods,” Solid State Sci. 13, 251–256 (2011).
[Crossref]

Adikaari, A. A. D.

A. A. D. Adikaari, I. Etchart, P.-H. Guering, M. Berard, S. R. P. Sliva, A. K. Cheetham, and R. J. Curry, “Near infrared up-conversion in organic photovoltaic devices using an efficient Yb3+:Ho3+ co-doped Ln2BaZnO5 (Ln = Y, Gd) phosphor,” J. Appl. Phys. 111, 094502 (2012).
[Crossref]

Ai, X.

Y. He, M. Zhao, Y. Song, G. Zhao, and X. Ai, “Effect of Bi3+ on fluorescence properties of YPO4:Dy3+ phosphors synthesized by a modified chemical co-precipitation method,” J. Lumin. 131, 1144–1148 (2011).
[Crossref]

Badie, L.

V. Singh, V. K. Rai, I. Ledoux-Rak, L. Badie, and H. Y. Kwak, “Visible upconversion and infrared luminescence investigations of Al2O3 powders doped with Er3+, Yb3+ and Zn2+ ions,” Appl. Phys. B 97, 805–809 (2009).
[Crossref]

Bandi, V. R.

V. R. Bandi, B. K. Grandhe, K. Jang, H.-S. Lee, D. S. Shin, S.-S. Yi, and J.-H. Jeong, “Citric based sol–gel synthesis and luminescence characteristics of CaLa2ZnO5:Eu3+phosphors for blue LED excited white LEDs,” J. Alloys Compd. 512, 264–269 (2012).
[Crossref]

Barreto, P. G.

G. S. Maciel, R. B. Guimaraes, P. G. Barreto, I. C. S. Carvalho, and N. Rakov, “The influence of Yb3+ doping on the upconversion luminescence of Pr3+ in aluminum oxide based powders prepared by combustion synthesis,” Opt. Mater. 31, 1735–1740 (2009).
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G. S. Maciel, R. B. Guimaraes, P. G. Barreto, I. C. S. Carvalho, and N. Rakov, “The influence of Yb3+ doping on the upconversion luminescence of Pr3+ in aluminum oxide based powders prepared by combustion synthesis,” Opt. Mater. 31, 1735–1740 (2009).
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Z. Mu, Y. Hu, L. Chen, X. Wang, G. Ju, Z. Yang, and Y. Jin, “A single-phase, color-tunable, broadband-excited white light-emitting phosphor Y2WO6:Sm3+,” J. Lumin. 146, 33–36 (2014).
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Z. Mu, Y. Hu, L. Chen, X. Wang, G. Ju, Z. Yang, and Y. Jin, “A single-phase, color-tunable, broadband-excited white light-emitting phosphor Y2WO6:Sm3+,” J. Lumin. 146, 33–36 (2014).
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S. Choi, S. W. Tae, J.-H. Seo, and H.-K. Jung, “Preparation of blue-emitting CaMgSi2O6:Eu2+ phosphors in reverse micellar system and their application to transparent emissive display devices,” J. Solid State Chem. 184, 1540–1544 (2011).
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A. Pandey, V. K. Rai, R. Dey, and K. Kumar, “Enriched green upconversion emission in combustion synthesized Y2O3:Ho3+ Yb3+ phosphor,” Mater. Chem. Phys. 139, 483–488 (2013).
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B. Dong, T. Yang, and M. K. Lei, “Optical high temperature sensor based on green up-conversion emissions in Er3+ doped Al2O3,” Sens. Actuators B 123, 667–670 (2007).
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N. Niu, P. Yang, Y. Liu, C. Li, D. Wang, S. Gai, and F. He, “Controllable synthesis and up-conversion properties of tetragonal BaYF5:Yb/Ln (Ln = Er, Tm, and Ho) nanocrystals,” J. Colloid Interface Sci. 362, 389–396 (2011).
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W. L. Feng, Y. Jin, Y. Wu, D. F. Li, and A. K. Cai, “Co-precipitation synthesis and photoluminescence properties of Ba1-xMoO4:xEu3+ red phosphors,” J. Lumin. 134, 614–617 (2013).
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L. Li, H. Lin, X. Zhao, Y. Wang, X. Zhou, C. Ma, and X. Wei, “Effect of Yb3+ concentration on upconversion luminescence in Yb3+, Tm3+ co-doped Lu2O3 nanophosphors,” J. Alloys Compd. 586, 555–560 (2014).
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Li, W.

Liang, Y.

J. Yang, J. Ding, S. Xiao, Y. Liang, and J. Chai, “Luminescence properties of Yb3+/Ho3+ co-doped Sr3YAl2O7.5 and Sr3LuAl2O7.5 powders,” J. Alloys Compd. 577, 86–89 (2013).
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L. Li, H. Lin, X. Zhao, Y. Wang, X. Zhou, C. Ma, and X. Wei, “Effect of Yb3+ concentration on upconversion luminescence in Yb3+, Tm3+ co-doped Lu2O3 nanophosphors,” J. Alloys Compd. 586, 555–560 (2014).
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C. Zhao, X. Kong, X. Liu, L. Tu, F. Wu, Y. Zhang, K. Liu, Q. Zeng, and H. Zhang, “Li+ ion doping: an approach for improving the crystallinity and upconversion emissions of NaYF4:Yb3+, Tm3+ nanoparticles,” Nanoscale 5, 8084–8089 (2013).
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Ma, C.

L. Li, H. Lin, X. Zhao, Y. Wang, X. Zhou, C. Ma, and X. Wei, “Effect of Yb3+ concentration on upconversion luminescence in Yb3+, Tm3+ co-doped Lu2O3 nanophosphors,” J. Alloys Compd. 586, 555–560 (2014).
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G. S. Maciel, R. B. Guimaraes, P. G. Barreto, I. C. S. Carvalho, and N. Rakov, “The influence of Yb3+ doping on the upconversion luminescence of Pr3+ in aluminum oxide based powders prepared by combustion synthesis,” Opt. Mater. 31, 1735–1740 (2009).
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K. Mishra, N. K. Giri, and S. B. Rai, “Preparation and characterization of upconversion luminescent Tm3+/Yb3+ co-doped Y2O3 nanophosphor,” Appl. Phys. B 103, 863–875 (2011).
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A. A. Kaminskii, A. O. Ivanov, S. E. Sarkisov, I. V. Mochalov, V. A. Fedorov, and L. Li, “Comprehensive investigations of the spectral and lasing characteristics of the LuAlO3 crystal doped with Nd3+,” Sov. Phys. JETP 44, 516–524 (1976).

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D. K. Mohanty, V. K. Rai, and Y. Dwivedi, “Yb3+ sensitized Tm3+ upconversion in tellurite lead oxide glass,” Spectrochim. Acta Part A 89, 264–267 (2012).
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Adv. Colloid Interface Sci. (1)

P. Sharma, S. Brown, G. Walter, S. Santra, and B. Moudgil, “Nanoparticles for bioimaging,” Adv. Colloid Interface Sci. 123–126, 471–485 (2006).
[Crossref]

Adv. Drug Delivery Rev. (1)

J. Shen, L. Zhao, and G. Han, “Lanthanide-doped upconverting luminescent nanoparticle platforms for optical imaging-guided drug delivery and therapy,” Adv. Drug Delivery Rev. 65, 744–755 (2013).
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Adv. Mater. (1)

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Figures (11)

Fig. 1.
Fig. 1.

X-ray diffraction pattern of the BaZnLa2O5:Ho3+-Yb3+ phosphor annealed at 800°C with JCPDS file No. 80-1882.

Fig. 2.
Fig. 2.

Williamson–Hall plot of BaZnLa2O5:Ho3+-Yb3+ phosphor.

Fig. 3.
Fig. 3.

FTIR spectrum of BaZnLa2O5:Ho3+-Yb3+ phosphor annealed at 800°C.

Fig. 4.
Fig. 4.

SEM image of BaZnLa2O5:Ho3+-Yb3+ phosphor annealed at 800°C.

Fig. 5.
Fig. 5.

Variation of upconversion emission intensity as a function of dopant concentration.

Fig. 6.
Fig. 6.

Upconversion emission spectra of BaZnLa2O5:Ho3+ and BaZnLa2O5:Ho3+-Yb3+ phosphors exciting by 980 nm diode laser.

Fig. 7.
Fig. 7.

Logarithmic dependence of UC emission intensity as a function of pump power of BaZnLa2O5:Ho3+-Yb3+ phosphor.

Fig. 8.
Fig. 8.

Schematic energy level diagram of Ho3+-Yb3+-codoped BaZnLa2O5 phosphor.

Fig. 9.
Fig. 9.

CIE color coordinates at different pump powers for BaZnLa2O5:Ho3+-Yb3+ phosphor.

Fig. 10.
Fig. 10.

Decay curve corresponding to the F54, S52I58 transition of Ho3+ and Ho3+-Yb3+-doped/codoped BaZnLa2O5 phosphors.

Fig. 11.
Fig. 11.

Optical photograph of the written matter (a) under normal light illumination and (b) under 980 nm excitation.

Tables (2)

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Table 1. Crystallite Size Corresponding to the Diffraction from Different Planes with Their FWHM Values

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Table 2. Assignments of FTIR Peaks for BaZnLa2O5:Ho3+-Yb3+ Phosphor

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

(100-p)BaZnLa2O5+pHo2O3,
and(100-p-q)BaZnLa2O5+pHo2O3+qYb2O3,
BaCO3+2HNO3Ba(NO3)2+H2O+CO2,2La2O3+8HNO34La(NO3)2+4H2O+O2,ZnO+2HNO3Zn(NO3)2+H2O,2Ba(NO3)2+4La(NO3)2+2Zn(NO3)22BaZnLa2O3+8N2+21O2.
t=0.89λ/βfcosθ,
βfcosθ=4εsinθ+0.89λ/t,
IucPs,

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