A Study of Ce Doped YAG Phosphors Prepared by Atmospheric-Pressure Plasma Jet

• Main Authors: Wu Chien-Yi, 吳千怡
• Other Authors: Chen Hao-Long
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/558j74

碩士 === 高苑科技大學 === 電子工程研究所 === 102 === Phosphors yttrium aluminum garnet Y3Al5O12, activated with trivalent cerium (Ce3+) was synthesized by atmospheric-pressure plasma method with aluminum nitride, yttrium nitride, cerium nitride and citric acid and as the starting materials. Structure, morphology and luminescence spectra were investigated by using X-ray diffraction, scanning electron microscopy and photoluminescence spectroscopy measurements. YAG:Ce3+ phosphors can be formed at the sintering temperature of 600, 800, 1000 and 1200°C for 4 hrs, respectively. The phases transformed from YAP, YAM into YAG with increasing temperature. The average particle size is about 100 nm and the morphology can be described as spherical. The YAG:Ce3+ samples show a broad emission band located in the range from 500 nm to 800 nm.