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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 25 — Dec. 7, 2009
  • pp: 22673–22679

Substitution of oxygen by fluorine in the GdSr2AlO5:Ce3+ phosphors: Gd1-x Sr2+x AlO5-x F x solid solutions for solid state white lighting

Won Bin Im, Yoann Fourré, Stuart Brinkley, Junichi Sonoda, Shuji Nakamura, Steven P. DenBaars, and Ram Seshadri  »View Author Affiliations

Optics Express, Vol. 17, Issue 25, pp. 22673-22679 (2009)

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Solid solutions between two isotypic host compounds: GdSr2AlO5 and Sr3AlO4F; Gd1-x Sr2+x AlO5-x F x :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

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(230.3670) Optical devices : Light-emitting diodes
(250.5230) Optoelectronics : Photoluminescence

ToC Category:

Original Manuscript: October 6, 2009
Manuscript Accepted: November 20, 2009
Published: November 25, 2009

Won Bin Im, Yoann Fourré, Stuart Brinkley, Junichi Sonoda, Shuji Nakamura, Steven P. DenBaars, and Ram Seshadri, "Substitution of oxygen by fluorine in the GdSr2AlO5:Ce3+ phosphors: Gd1−xSr2+xAlO5−xFx solid solutions for solid state white lighting," Opt. Express 17, 22673-22679 (2009)

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  1. S. Nakamura, "Current Status of GaN-Based Solid-State Lighting," MRS Bulletin 34, 101-107 (2009). [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]
  4. 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]
  5. E. F. Schubert and J. K. Kim, "Solid-state light sources getting smart," Science 308, 1274-1278 (2005). [CrossRef] [PubMed]
  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]
  7. 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]
  8. S. C. Allen and A. J. Steckl, "A nearly ideal phosphor-converted white light-emitting diode," Appl. Phys. Lett. 92, 1433091-1433093 (2008). [CrossRef]
  9. 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]
  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]
  11. 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]
  12. 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]
  13. 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]
  14. 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]
  15. 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]
  16. 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]
  17. L. S. D. Glasser and F. P. Glasser, "Silicates M3SiO5. I. Sr3SiO5," Acta Crystallogr. 18, 453-454 (1965). [CrossRef]
  18. A. C. Larson and R. B. Von Dreele, "General Structure Analysis System (GSAS), "Los Alamos National Laboratory Report LAUR, 86-748 (1994).
  19. 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]
  20. R. D. Shannon, "Revised Effective Ionic-Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides," Acta Crystallogr. B 32, 751-767 (1976)
  21. 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]
  22. 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]
  23. G. Blasse and B. C. Grabmaier, Luminescent Materials (Springer, Berlin, 1994).
  24. S. Shionoya and W. M. Yen, Phosphor Handbook (CRC, New York, 1999).
  25. C. Reber and H. U. Gudel, "Nonradiative Relaxation Processes in V3+ Doped Halide and Oxide Lattices," J. Lumin. 47, 7-18 (1990). [CrossRef]

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Fig. 1. Fig. 2. Fig. 3.

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