以柠檬酸作为络合剂和燃料,用sol-gel燃烧法,制备了(Y1-xErx)3Al5O12粉体(x=0.001、0.005、0.01、0.05、0.1).在800℃,粉体直接由无定形相转变为YAG单相.采用980nm的半导体激光器激发,YAG:Er3+发出较强的红绿光,且有两个主发射峰552.5nm和675nm.随着掺杂量的增加,发光强度先增加后减小,当Er3+掺杂量为5%(x=0.05)时,上转换发光强度最大.另外,对其上转换发光机制进行了讨论.
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