Y_3Al_5O_(12):Ce~(3+)发光纳米纤维的制备
Journal of Changchun University of Science and Technology(Natural Science Edition)(2012)
Abstract
采用静电纺丝技术制备了PVP/[Y(NO3)3+Ce(NO3)3+Al(NO3)3]复合纳米纤维,对其进行焙烧,得到了结构新颖的Y3Al5O12:Ce3+(简称为YAG:Ce3+)纳米纤维。XRD分析表明,PVP/[Y(NO3)3+Ce(NO3)3+Al(NO3)3]复合纳米纤维为非晶态,经900℃焙烧8h,获得单相石榴石型的YAG:Ce3+纳米纤维,属于立方晶系,空间群为Ia3d。SEM分析表明,PVP/[Y(NO3)3+Ce(NO3)3+Al(NO3)3]复合纳米纤维表面光滑,直径为210~300nm;YAG:Ce3+纳米纤维直径为90~125nm,长度大于100μm。荧光光谱分析表明,在460nm蓝光激发下,YAG:Ce3+纳米纤维发射出波长为525nm的黄光,属于Ce3+的5D0→7F1跃迁。
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Key words
YAG:Ce3+,nanofibers,phosphor,electrospinning
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