Abstract

Solid solutions between two isotypic host compounds: GdSr2AlO5 and Sr3AlO4F; Gd1-xSr2+xAlO5-xFx:Ce3+ (GSAF:Ce3+), have been prepared across the complete solid solution range x. Depending on x, the series display considerable optical tunability of emission wavelengths in the range 574 nm to 474 nm, which is attributed to the decreased crystal field splitting arising from increased host ionicity with fluorine addition. Applying the GSAF:Ce3+ phosphors on InGaN LEDs (λmax=405 nm and 450 nm) permits white lighting sources to be prepared. The characteristics of these are reported.

© 2009 Optical Society of America

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    [CrossRef]
  2. J. S. Speck and S. F. Chichibu, "Nonpolar and semipolar group III nitride-based materials," MRS Bulletin 34, 304-312 (2009).
    [CrossRef]
  3. S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
    [CrossRef]
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    [CrossRef] [PubMed]
  5. E. F. Schubert and J. K. Kim, "Solid-state light sources getting smart," Science 308, 1274-1278 (2005).
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  6. V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
    [CrossRef]
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    [CrossRef] [PubMed]
  10. F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]

2009 (8)

S. Nakamura, "Current Status of GaN-Based Solid-State Lighting," MRS Bulletin 34, 101-107 (2009).
[CrossRef]

J. S. Speck and S. F. Chichibu, "Nonpolar and semipolar group III nitride-based materials," MRS Bulletin 34, 304-312 (2009).
[CrossRef]

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
[CrossRef]

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, and R. Seshadri, "La1−x−0.025Ce0.025Sr2+xAl1−xSixO5 solid solutions as tunable yellow phosphors for solid state white lighting," J. Mater. Chem. 19,1325-1330 (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

J. R. Oh, S. H. Cho, Y. H. Lee, and Y. R. Do, "Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter," Opt. Express 17, 7450-7457 (2009).
[CrossRef] [PubMed]

2008 (2)

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

S. C. Allen and A. J. Steckl, "A nearly ideal phosphor-converted white light-emitting diode," Appl. Phys. Lett. 92, 1433091-1433093 (2008).
[CrossRef]

2007 (2)

S. C. Allen and A. J. Steckl, "ELiXIR - Solid-state luminaire with enhanced light extraction by internal reflection," J. Disp. Technol. 3, 155-159 (2007).
[CrossRef]

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, "A GaN bulk crystal with improved structural quality grown by the ammonothermal method," Nat. Mater. 6, 568-571 (2007).
[CrossRef] [PubMed]

2006 (1)

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

2005 (1)

E. F. Schubert and J. K. Kim, "Solid-state light sources getting smart," Science 308, 1274-1278 (2005).
[CrossRef] [PubMed]

2003 (1)

A. K. Prodjosantoso, B. J. Kennedy, T. Vogt, P. M. Woodward, "Cation and anion ordering in the layered oxyfluorides Sr3−xAxAlO4F (A = Ba, Ca)," J. Solid State Chem. 172, 89-94 (2003).
[CrossRef]

1999 (1)

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

1998 (1)

P. D. Rack and P. H. Holloway, "The structure, device physics, and material properties of thin film electroluminescent displays," Mater. Sci. Eng. R. 21, 171-219 (1998).
[CrossRef]

1995 (1)

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

1990 (1)

C. Reber and H. U. Gudel, "Nonradiative Relaxation Processes in V3+ Doped Halide and Oxide Lattices," J. Lumin. 47, 7-18 (1990).
[CrossRef]

1976 (1)

R. D. Shannon, "Revised Effective Ionic-Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides," Acta Crystallogr. B 32, 751-767 (1976)

1965 (1)

L. S. D. Glasser and F. P. Glasser, "Silicates M3SiO5. I. Sr3SiO5," Acta Crystallogr. 18, 453-454 (1965).
[CrossRef]

1932 (1)

L. Pauling, "The Nature of the Chemical Bond. IV. The Energy of Single Bonds and the Relative Electronegativity of Atoms," J. Am. Chem. Soc. 54, 3570-3582 (1932).
[CrossRef]

Allen, S. C.

S. C. Allen and A. J. Steckl, "A nearly ideal phosphor-converted white light-emitting diode," Appl. Phys. Lett. 92, 1433091-1433093 (2008).
[CrossRef]

S. C. Allen and A. J. Steckl, "ELiXIR - Solid-state luminaire with enhanced light extraction by internal reflection," J. Disp. Technol. 3, 155-159 (2007).
[CrossRef]

Bachmann, V.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

Baumann, V.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

Chichibu, S. F.

J. S. Speck and S. F. Chichibu, "Nonpolar and semipolar group III nitride-based materials," MRS Bulletin 34, 304-312 (2009).
[CrossRef]

Cho, S. H.

David, A.

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

DenBaars, S. P.

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, and R. Seshadri, "La1−x−0.025Ce0.025Sr2+xAl1−xSixO5 solid solutions as tunable yellow phosphors for solid state white lighting," J. Mater. Chem. 19,1325-1330 (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

der Guenne, J. S. A.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

Diana, F. S.

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Do, Y. R.

Fellows, N. N.

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, and R. Seshadri, "La1−x−0.025Ce0.025Sr2+xAl1−xSixO5 solid solutions as tunable yellow phosphors for solid state white lighting," J. Mater. Chem. 19,1325-1330 (2009).
[CrossRef]

Friend, R. H.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Glasser, F. P.

L. S. D. Glasser and F. P. Glasser, "Silicates M3SiO5. I. Sr3SiO5," Acta Crystallogr. 18, 453-454 (1965).
[CrossRef]

Glasser, L. S. D.

L. S. D. Glasser and F. P. Glasser, "Silicates M3SiO5. I. Sr3SiO5," Acta Crystallogr. 18, 453-454 (1965).
[CrossRef]

Greenham, N. C.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Gudel, H. U.

C. Reber and H. U. Gudel, "Nonradiative Relaxation Processes in V3+ Doped Halide and Oxide Lattices," J. Lumin. 47, 7-18 (1990).
[CrossRef]

Hashimoto, T.

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, "A GaN bulk crystal with improved structural quality grown by the ammonothermal method," Nat. Mater. 6, 568-571 (2007).
[CrossRef] [PubMed]

Hayes, G. R.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Hecht, C.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

Hirosaki, N.

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

Holloway, P. H.

P. D. Rack and P. H. Holloway, "The structure, device physics, and material properties of thin film electroluminescent displays," Mater. Sci. Eng. R. 21, 171-219 (1998).
[CrossRef]

Holmes, A. B.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Hunter, B. A.

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

Im, W. B.

W. B. Im, N. N. Fellows, S. P. DenBaars, and R. Seshadri, "La1−x−0.025Ce0.025Sr2+xAl1−xSixO5 solid solutions as tunable yellow phosphors for solid state white lighting," J. Mater. Chem. 19,1325-1330 (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

Kennedy, B. J.

A. K. Prodjosantoso, B. J. Kennedy, T. Vogt, P. M. Woodward, "Cation and anion ordering in the layered oxyfluorides Sr3−xAxAlO4F (A = Ba, Ca)," J. Solid State Chem. 172, 89-94 (2003).
[CrossRef]

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

Kessener, Y. A. R. R.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Kim, J. K.

E. F. Schubert and J. K. Kim, "Solid-state light sources getting smart," Science 308, 1274-1278 (2005).
[CrossRef] [PubMed]

Kim, Y. I.

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

Lee, Y. H.

Li, Y. Q.

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

Meijerink, A.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

Meinel, I.

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Mitomo, M.

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

Moratti, S. C.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Nakamura, S.

S. Nakamura, "Current Status of GaN-Based Solid-State Lighting," MRS Bulletin 34, 101-107 (2009).
[CrossRef]

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
[CrossRef]

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, "A GaN bulk crystal with improved structural quality grown by the ammonothermal method," Nat. Mater. 6, 568-571 (2007).
[CrossRef] [PubMed]

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Oeckler, O.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

Oh, J. R.

Pauling, L.

L. Pauling, "The Nature of the Chemical Bond. IV. The Energy of Single Bonds and the Relative Electronegativity of Atoms," J. Am. Chem. Soc. 54, 3570-3582 (1932).
[CrossRef]

Petroff, P. M.

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Phillips, R. T.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Pimputkar, S.

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
[CrossRef]

Prodjosantoso, A. K.

A. K. Prodjosantoso, B. J. Kennedy, T. Vogt, P. M. Woodward, "Cation and anion ordering in the layered oxyfluorides Sr3−xAxAlO4F (A = Ba, Ca)," J. Solid State Chem. 172, 89-94 (2003).
[CrossRef]

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

Rack, P. D.

P. D. Rack and P. H. Holloway, "The structure, device physics, and material properties of thin film electroluminescent displays," Mater. Sci. Eng. R. 21, 171-219 (1998).
[CrossRef]

Reber, C.

C. Reber and H. U. Gudel, "Nonradiative Relaxation Processes in V3+ Doped Halide and Oxide Lattices," J. Lumin. 47, 7-18 (1990).
[CrossRef]

Ronda, C.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

Samuel, I. D. W.

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

Schmidt, P. J.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

Schnick, W.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

Schubert, E. F.

E. F. Schubert and J. K. Kim, "Solid-state light sources getting smart," Science 308, 1274-1278 (2005).
[CrossRef] [PubMed]

Seshadri, R.

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

W. B. Im, N. N. Fellows, S. P. DenBaars, and R. Seshadri, "La1−x−0.025Ce0.025Sr2+xAl1−xSixO5 solid solutions as tunable yellow phosphors for solid state white lighting," J. Mater. Chem. 19,1325-1330 (2009).
[CrossRef]

Shannon, R. D.

R. D. Shannon, "Revised Effective Ionic-Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides," Acta Crystallogr. B 32, 751-767 (1976)

Sharma, R.

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Speck, J. S.

J. S. Speck and S. F. Chichibu, "Nonpolar and semipolar group III nitride-based materials," MRS Bulletin 34, 304-312 (2009).
[CrossRef]

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
[CrossRef]

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, "A GaN bulk crystal with improved structural quality grown by the ammonothermal method," Nat. Mater. 6, 568-571 (2007).
[CrossRef] [PubMed]

Stadler, F.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

Steckl, A. J.

S. C. Allen and A. J. Steckl, "A nearly ideal phosphor-converted white light-emitting diode," Appl. Phys. Lett. 92, 1433091-1433093 (2008).
[CrossRef]

S. C. Allen and A. J. Steckl, "ELiXIR - Solid-state luminaire with enhanced light extraction by internal reflection," J. Disp. Technol. 3, 155-159 (2007).
[CrossRef]

Takeda, T.

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

Vogt, T.

A. K. Prodjosantoso, B. J. Kennedy, T. Vogt, P. M. Woodward, "Cation and anion ordering in the layered oxyfluorides Sr3−xAxAlO4F (A = Ba, Ca)," J. Solid State Chem. 172, 89-94 (2003).
[CrossRef]

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

Weisbuch, C.

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Woodward, P. M.

A. K. Prodjosantoso, B. J. Kennedy, T. Vogt, P. M. Woodward, "Cation and anion ordering in the layered oxyfluorides Sr3−xAxAlO4F (A = Ba, Ca)," J. Solid State Chem. 172, 89-94 (2003).
[CrossRef]

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

Wu, F.

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, "A GaN bulk crystal with improved structural quality grown by the ammonothermal method," Nat. Mater. 6, 568-571 (2007).
[CrossRef] [PubMed]

Xie, R. J.

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

Acta Crystallogr. (1)

L. S. D. Glasser and F. P. Glasser, "Silicates M3SiO5. I. Sr3SiO5," Acta Crystallogr. 18, 453-454 (1965).
[CrossRef]

Acta Crystallogr. B (1)

R. D. Shannon, "Revised Effective Ionic-Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides," Acta Crystallogr. B 32, 751-767 (1976)

Appl. Phys. Lett. (1)

S. C. Allen and A. J. Steckl, "A nearly ideal phosphor-converted white light-emitting diode," Appl. Phys. Lett. 92, 1433091-1433093 (2008).
[CrossRef]

Chem. Mat. (1)

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, "Color Point Tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for White Light LEDs," Chem. Mat. 21, 316-325 (2009).
[CrossRef]

Chem. Mater. (3)

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, "LaSr2AlO5, a Versatile Host Compound for Ce3+ -Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting," Chem. Mater. 21, 2957-2966 (2009).
[CrossRef]

C. Hecht, F. Stadler, P. J. Schmidt, J. S. A. der Guenne, V. Baumann, and W. Schnick, "SrAlSi4N7:Eu2+ - A Nitridoalumosilicate Phosphor for Warm White Light (pc)LEDs with Edge-Sharing Tetrahedra," Chem. Mater. 21, 1595-1601, 2009.
[CrossRef]

Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, and M. Mitomo, "Yellow-Orange-Emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs," Chem. Mater. 20, 6704-6714 (2008).
[CrossRef]

Chem. Phys. Lett. (1)

N. C. Greenham, I. D. W. Samuel, G. R. Hayes, R. T. Phillips, Y. A. R. R. Kessener, S. C. Moratti, A. B. Holmes, and R. H. Friend, "Measurement of Absolute Photoluminescence Quantum Efficiencies in Conjugated Polymers," Chem. Phys. Lett. 241, 89-96 (1995).
[CrossRef]

J. Am. Chem. Soc. (1)

L. Pauling, "The Nature of the Chemical Bond. IV. The Energy of Single Bonds and the Relative Electronegativity of Atoms," J. Am. Chem. Soc. 54, 3570-3582 (1932).
[CrossRef]

J. Disp. Technol. (1)

S. C. Allen and A. J. Steckl, "ELiXIR - Solid-state luminaire with enhanced light extraction by internal reflection," J. Disp. Technol. 3, 155-159 (2007).
[CrossRef]

J. Lumin. (1)

C. Reber and H. U. Gudel, "Nonradiative Relaxation Processes in V3+ Doped Halide and Oxide Lattices," J. Lumin. 47, 7-18 (1990).
[CrossRef]

J. Mater. Chem. (1)

W. B. Im, N. N. Fellows, S. P. DenBaars, and R. Seshadri, "La1−x−0.025Ce0.025Sr2+xAl1−xSixO5 solid solutions as tunable yellow phosphors for solid state white lighting," J. Mater. Chem. 19,1325-1330 (2009).
[CrossRef]

J. Solid State Chem. (2)

T. Vogt, P. M. Woodward, B. A. Hunter, A. K. Prodjosantoso, and B. J. Kennedy, "Sr3MO4F (M = Al, Ga) - A new family of ordered oxyfluorides," J. Solid State Chem. 144, 228-231 (1999).
[CrossRef]

A. K. Prodjosantoso, B. J. Kennedy, T. Vogt, P. M. Woodward, "Cation and anion ordering in the layered oxyfluorides Sr3−xAxAlO4F (A = Ba, Ca)," J. Solid State Chem. 172, 89-94 (2003).
[CrossRef]

Mater. Sci. Eng. R. (1)

P. D. Rack and P. H. Holloway, "The structure, device physics, and material properties of thin film electroluminescent displays," Mater. Sci. Eng. R. 21, 171-219 (1998).
[CrossRef]

MRS Bulletin (2)

S. Nakamura, "Current Status of GaN-Based Solid-State Lighting," MRS Bulletin 34, 101-107 (2009).
[CrossRef]

J. S. Speck and S. F. Chichibu, "Nonpolar and semipolar group III nitride-based materials," MRS Bulletin 34, 304-312 (2009).
[CrossRef]

Nano Lett. (1)

F. S. Diana, A. David, I. Meinel, R. Sharma, C. Weisbuch, S. Nakamura, and P. M. Petroff, "Photonic crystalassisted light extraction from a colloidal quantum dot/GaN hybrid structure," Nano Lett. 6, 1116-1120 (2006).
[CrossRef] [PubMed]

Nat. Mater. (1)

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, "A GaN bulk crystal with improved structural quality grown by the ammonothermal method," Nat. Mater. 6, 568-571 (2007).
[CrossRef] [PubMed]

Nat. Photonics (1)

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting," Nat. Photonics 3, 179-181, (2009).
[CrossRef]

Opt. Express (1)

Science (1)

E. F. Schubert and J. K. Kim, "Solid-state light sources getting smart," Science 308, 1274-1278 (2005).
[CrossRef] [PubMed]

Other (3)

G. Blasse and B. C. Grabmaier, Luminescent Materials (Springer, Berlin, 1994).

S. Shionoya and W. M. Yen, Phosphor Handbook (CRC, New York, 1999).

A. C. Larson and R. B. Von Dreele, "General Structure Analysis System (GSAS), "Los Alamos National Laboratory Report LAUR, 86-748 (1994).

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Figures (3)

Fig. 1.
Fig. 1.

(a) XRD patterns of the GSAF:Ce3+ (x=0, 0.1, 0.3, 0.5, 0.7, 0.9, and 1.0). The panel on the right details the evolution of reflections near 2θ=37°. Expected reflection positions for the end-members are displayed at the top. Evolution of (b) a and (c) c lattice parameters as a function of x as obtained from LeBail pattern-matching of XRD data.

Fig. 2.
Fig. 2.

(a-b) Excitation and emission spectra of Gd1-x Sr2+x AlO5-x F x :Ce3+ (x=0, 0.1, 0.3, 0.5, 0.7, 0.9, and 1.0). (c) Relative emission intensities under various excitation wavelengths across the solid solution series.

Fig. 3.
Fig. 3.

Luminescence of the InGaN LED + phosphor, under different forward bias currents (indicated): (a) InGaN (λmax =450 nm) + GSAF:Ce3+ (x=0), InGaN (λmax =405 nm) + GSAF:Ce3+ (x=1.0), and InGaN (λmax =405 nm) + GSAF:Ce3+ (x=1.0) + commercial red phosphor. (d) CIE chromatic coordinates of the device under different forward bias currents [as in panel (a), (b), and (c)]. The Planckian locus line and the points corresponding to color temperatures of 3500K and 6500K are indicated.

Tables (2)

Tables Icon

Table 1. Spectral parameters of Gd1-x Sr2+x AlO5-x F x :Ce3+ (x=0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0).

Tables Icon

Table 2. Optical properties of commercial YAG:Ce3+ and Gd1-x Sr2+x AlO5-x F x :Ce3+ (x=0, 1.0) phosphors in white LEDs with a current of 20 mA.

Equations (1)

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η pcLED = η LED × η phosphor × η package × η s

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