Photoluminescence of nano-scaled YAG:Ce phosphor powders

In Gann Chen, Yulin Chen, Chii Shyang Hwang, F. S. Juang, S. J. Chang, Y. K. Su, G. O. Mueller, R. Mueller-Mach

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

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 Commission 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.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalMaterials Research Society Symposium - Proceedings
Volume727
DOIs
Publication statusPublished - 2002
EventNanostructured Interfaces - San Francisco, CA, United States
Duration: 2002 Apr 22002 Apr 4

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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