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Synthesis of agglomerate-free YAG: Ce3+ phosphors by co-precipitation and low temperature spray pyrolysis

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Synthesis of Agglomerate-Free YAG_Ce3+ Phosphors by Co-Precipitation and Low Temperature Spray Pyrolysis.pdf (1.713Mb)
Date
2011
Author
Gao, Shengxi
Chen, Yibin
Zeng, Renjie
曾人杰
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  • 材料学院-会议论文 [72]
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Abstract
Y3-xCexAl5O12 (YAG: Ce 3+) phosphor particles were prepared by a new method called co-precipitation and low temperature spray pyrolysis (CP-LTSP) with oxalic acid and ammonia as precipitant. It corresponds to the first-step chemical liquid reaction, the second step dehydration and partial decomposition of precipitation droplets at 250°C and then heating at 1100°C or above. Spherical as-prepared particles and agglomerate-free YAG: Ce3+ phosphor particles were obtained respectively. Pure YAG phase could be formed after LTSP at 250°C and then annealing at 1100°C for 4 h. The emission spectra and XRD patterns of YAG: Ce3+ phosphor particles indicated that the optimum doping concentration of Ce3+ was 0.06. The emission intensity increased with the increase of annealing temperature. As a result, the YAG: Ce3+ phosphor particles without optimization annealed at 1550°C for 4 h had the similar emission intensity (96%) of the commercial phosphor by the solid-state method. ? 2011 IEEE.
Description
Conference Name:2011 International Symposium on Advanced Packaging Materials, APM 2011. Conference Address: Xiamen, China. Time:October 25, 2011 - October 28, 2011.
Citation
Proceedings - International Symposium on Advanced Packaging Materials, 2011:112-116
URI
https://dspace.xmu.edu.cn/handle/2288/85153

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