Luminescence of long-lasting CaAl2O4:Eu2+,Nd3+ phosphor by co-precipitation method

被引:69
作者
Chang, CK
Xu, J
Jiang, L
Mao, DL
Ying, WJ
机构
[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China
[2] Shanghai Jiao Tong Univ, Instrumental Anal Ctr, Shanghai 200030, Peoples R China
基金
上海市自然科学基金;
关键词
co-precipitation; phosphorescence; afterglow; thermally stimulated luminescence;
D O I
10.1016/j.matchemphys.2005.09.069
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Long-lasting CaAl2O4:Eu2+Nd3+ phosphor was prepared by co-precipitation method. CaAl2O4:Eu2+,Nd3+ single phased phosphor was achieved by calcining the as-precipitated precursor at 1150 degrees C. Some other calcium aluminates, CaAl4O7 and Ca3AlO6, were identified as the intermediate phase during the calcination process. The obtained phosphor showed a long afterglow peaking at 430 nm, a slight blue shift due to the decrease in grain size. The obtained phosphor revealed a faint afterglow when compared to the phosphor prepared through solid reaction routine, which can be ascribed to the different traps formed by the co-doped Nd3+ ion within the CaAl2O4 host. (c) 2005 Elsevier B.V All rights reserved.
引用
收藏
页码:509 / 513
页数:5
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