Luminescent properties of YAG:Ce3+ phosphor powders prepared by hydrothermal-homogeneous precipitation method

Huijuan Yang, Le Yuan, Guisheng Zhu, Aibing Yu, Huarui Xu

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Abstract

Y3 - xCexAl5O12 (YAG:Ce3+) phosphor powders were successfully prepared by hydrothermal-homogenous precipitation (HHP) method, under mild conditions with inexpensive aluminum and yttrium nitrates as the starting materials and urea as homogenous precipitant. The pure YAG crystalline phase could be formed after hydrothermal treatment at 100 ?C for 4 h and 240 ?C for 20 h and postannealing process at 1200 ?C for 2 h. All of the as-prepared YAG:Ce3+ powders did not have the CeO2 phase. The photoluminescence spectrum of crystalline YAG:Ce3+ phosphors showed the emission intensity of phosphor increased with increasing the annealed temperature and reached its maximum as the molar fraction of cerium ion was 0.10, and also showed the maximum emission wavelength nearly unchanged with the calcination temperature and cerium doping concentration.
Original languageEnglish
Pages (from-to)2271 - 2273
Number of pages3
JournalMaterials Letters
Volume63
Issue number27
DOIs
Publication statusPublished - 2009
Externally publishedYes

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