采用柠檬酸-凝胶法合成技术制备YAG∶ Ce荧光粉,研究了Ce~(3+)掺杂量、煅烧温度对荧光粉的光谱强度的影响.结果表明:当Ce~(3+)掺杂量x≤0.07时,光谱强度随x增大而增强;当x>0.07时,光谱强度随x增大而减弱.随着煅烧温度的提高,粉体的结晶度不断提高,YAG∶ Ce荧光粉的光谱相对强度逐渐增强.光谱的峰形和峰值不受温度和x的影响,主激发峰位于469 nm,发射峰位于529 nm.
YAG∶ Ce phosphor was synthesized by citric acid-gel method. The effects of spectrum intensity of the concentration (x) of Ce ion and calcination temperatures were studied.The result indicates that spectrum intensity of phosphor increases with the concentration (x) of Ce ion when x is less than 0.07, the spectrum intensity of phosphor decreases with the increase of x when x is more than 0.07.The crystallinity of powders and spectrum intensity of YAG∶ Ce phosphor increase with the increasing of calcination temperatures. It is also found that parameters such as temperatures and x do not affect the peak shape and peak locations, the main excitation peak locates at 469 nm and the main emission peak locates at 529 nm .
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