Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-19T09:30:51.505Z Has data issue: false hasContentIssue false
  • English
  • Français

Photoluminescence of Nano-scaled YAG:Ce Phosphor Powders

Published online by Cambridge University Press:  01 February 2011

In-Gann Chen ,
Yulin Chen ,
Chii-Shyang Hwang ,
F.S. Juang ,
S.J. Chang ,
Y.K. Su ,
G.O. Mueller  and
R. Mueller-Mach
In-Gann Chen
Affiliation:
Department of Materials Science and Engineering, National Cheng Kung University, Tainan TAIWAN
Yulin Chen
Affiliation:
Department of Materials Science and Engineering, National Cheng Kung University, Tainan TAIWAN
Chii-Shyang Hwang
Affiliation:
Department of Materials Science and Engineering, National Cheng Kung University, Tainan TAIWAN
F.S. Juang
Affiliation:
Department of Electro-Optics Engineering, National Huwei Inst. of Tech, Huwei, Yunlin, Taiwan.
S.J. Chang
Affiliation:
Department of Electrical Engineer, National Cheng Kung University, Tainan, TAIWAN
Y.K. Su
Affiliation:
Department of Electrical Engineer, National Cheng Kung University, Tainan, TAIWAN
G.O. Mueller
Affiliation:
Lumileds Lighting, LLC, San Jose, CA, U.S.A.
R. Mueller-Mach
Affiliation:
Lumileds Lighting, LLC, San Jose, CA, U.S.A.
Get access

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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 727: Symposium R – Nanostructured Interfaces , 2002 , R8.1
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Gowda, G., “Synthesis of Yttrium Aluminates by the sol-gel process” J. Mat. Sci. Lett. 5, 1029_1986.Google Scholar
2. Yang, M. F., Huo, T. C. D. and Ling, H. C., “Preparation of Y3A15012-Based Phosphor Powder”. J. Eletrochem. Soc. 134, 493_1987_.Google Scholar
3. Rao, R. P., “Preparation and Characterization of Fine-Grain Yttrium - Based Phosphors by Sol-gel Process.” J. Electrochem. Soc. 143_1996_.Google Scholar
4. Vequeiro, P., Arturo, M. and , López-Quintela, “Synthesis of yttrium aluminum garnet by the citrate gel process.” J. Mater. Chem., 8_1_161–163_1998_.Google Scholar
5. Hakuta, Y., Seino, K., Ura, H., Adschiri, T., Takizawa, H. and Arai, K., “Production of phosphor_YAG_Tb_fine particles by hydrothermal synthesis in supercritical water.” J. Mater. Chem., 9, 2671_1999_.Google Scholar
6. Jin, C., Luttmer, J. D., Smith, D. M., Ramos, T. A., “Nanoporous Silica as an Ultralow-k Dielectric.” MRS Bull. 22. No. 10, 39_1997_.Google Scholar
7. Ropp, R. C., “Luminescence and solid state”, Elsevier Science Publishers, B. V., The Netherlands_1991_Google Scholar