Abstract
Four series of YAG:Ce phosphor powders were synthesized by solid state, co-precipitation, and sol-gel (with two different growth inhibitors, HMDS and PAA respectively) methods, which results in the average particle sizes of 800, 56, 43, and 32 nm respectively. All the nano-scale YAG powders were heat treated below 1000_. Both TEM and XRD results of these nano-scale YAG powders show high degree of crystalline structure. Photoluminescence (PL) characterization shows that the nano-scale YAG phosphor powders emit a higher intensity of luminescence than that of sub-micro sized samples. The effect of different Ce doping level on the PL of (Y3-xCex)Al5O12 shows a maximum at x ∼ 0.01. The Commissiom International de I.Eclairage (CIE) chromaticity coordinates were determined and show different trends of shifts in the resulting PL spectra. Systematic study of the processing parameters characterized by DTA/TGA, XRD, FTIR, and BET will be discussed in detail in the report.
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References
G. Gowda, “Synthesis of Yttrium Aluminates by the sol-gel process” J. Mat. Sci. Lett. 5, 1029_1986.
M. F. Yang, T. C. D. Huo and H. C. Ling, “Preparation of Y3A15012-Based Phosphor Powder”. J. Eletrochem. Soc. 134, 493_1987_.
R. P. Rao, “Preparation and Characterization of Fine-Grain Yttrium - Based Phosphors by Sol-gel Process.” J. Electrochem. Soc. 143_1996_.
P. Vequeiro, M. Arturo and López-Quintela, “Synthesis of yttrium aluminum garnet by the citrate gel process.” J. Mater. Chem., 8_1_161–163_1998_.
Y. Hakuta, K. Seino, H. Ura, T. Adschiri, H. Takizawa and K. Arai, “Production of phosphor_YAG_Tb_fine particles by hydrothermal synthesis in supercritical water.” J. Mater. Chem., 9, 2671_1999_.
C. Jin, J. D. Luttmer, D. M. Smith, T. A. Ramos, “Nanoporous Silica as an Ultralow-k Dielectric.” MRS Bull. 22. No. 10, 39_1997_.
R. C. Ropp, “Luminescence and solid state”, Elsevier Science Publishers, B. V., The Netherlands_1991_
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Chen, IG., Chen, Y., Hwang, CS. et al. Photoluminescence of Nano-scaled YAG: Ce Phosphor Powders. MRS Online Proceedings Library 727, 81 (2002). https://doi.org/10.1557/PROC-727-R8.1
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DOI: https://doi.org/10.1557/PROC-727-R8.1