Characterization and luminescence of Eu/Sm-coactivated CaYAl3O7 phosphor synthesized by using a combustion method

被引：3
|
作者：
Yu Hong-Ling
Yu Xue
Xu Xu-Hui
Jiang Ting-Ming
Yang Peng-Hui
Jiao Qing
Zhou Da-Cheng
Qiu Jian-Bei [1 ]
机构：
[1] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Peoples R China
来源：
CHINESE PHYSICS B | 2013年 / 22卷 / 09期
基金：
中国国家自然科学基金;
关键词：
CaYAl3O7; combustion method; photoluminescence; energy transfer; ENERGY-TRANSFER; PHOTOLUMINESCENCE PROPERTIES; EU3+; EMISSION; RE; TB;
D O I：
10.1088/1674-1056/22/9/098503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A novel red-emitting phosphor, CaYAl3O7: Eu3+, Sm3+, is synthesized by a combustion method at a low temperature (850 degrees C), and the single phase of CaYAl3O7 is confirmed by powder X-ray diffraction measurements. The photoluminescence property results reveal that the red emission intensity of Eu3+ is strongly dependent on the Sm3+ concentration. Only the Eu3+ luminescence is detected in the Eu3+-Sm3+ co-doped CaYAl3O7 phosphor with 393 nm excitation. However, under the characteristic excitation (402 nm) of Sm3+, not only the Sm3+ emission but also the Eu3+ emission are observed. A possible mechanism of the energy transfer between Sm3+ and Eu3+ is investigated in detail.
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页数：4
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