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

A novel red-emitting phosphor, CaYA1307： Eu^3＋, Sm^3＋, is synthesized by a combustion method at a low temperature （850 ℃）, and the single phase of CaYA1307 is confirmed by powder X-ray diffraction measurements. The photoluminescence property results reveal that the red emission intensity of Eu^3＋ is...

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Bibliographic Details
Published in中国物理B：英文版 no. 9; pp. 640 - 643
Main Author 余红玲 余雪 徐旭辉 姜庭明 杨鹏辉 焦清 周大成 邱建备
Format Journal Article
LanguageEnglish
Published 01.09.2013
Subjects
合成
活化
燃烧法
粉末X射线衍射
红色发光
荧光粉
表征
铕
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/22/9/098503

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Summary:A novel red-emitting phosphor, CaYA1307： Eu^3＋, Sm^3＋, is synthesized by a combustion method at a low temperature （850 ℃）, and the single phase of CaYA1307 is confirmed by powder X-ray diffraction measurements. The photoluminescence property results reveal that the red emission intensity of Eu^3＋ is strongly dependent on the Sm^3＋ concentration. Only the Eu^3＋ luminescence is detected in the Eu^3＋-Sm^3＋ co-doped CaYA1307 phosphor with 393 nm excitation. However, under the characteristic excitation （402 nm） of Sm^3＋, not only the Sm^3＋ emission but also the Eu^3＋ emission are observed. A possible mechanism of the energy transfer between Sm^3＋ and Eu3＋ is investigated in detail.
Bibliography:Yu Hong-Ling, Yu Xue, Xu Xu-Hui, Jiang Ting-Ming, Yang Peng-Hui, Jiao Qing, Zhou Da-Cheng, and Qiu Jian-Bei（ College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China）
CaYA1307, combustion method, photoluminescence, energy transfer
A novel red-emitting phosphor, CaYA1307： Eu^3＋, Sm^3＋, is synthesized by a combustion method at a low temperature （850 ℃）, and the single phase of CaYA1307 is confirmed by powder X-ray diffraction measurements. The photoluminescence property results reveal that the red emission intensity of Eu^3＋ is strongly dependent on the Sm^3＋ concentration. Only the Eu^3＋ luminescence is detected in the Eu^3＋-Sm^3＋ co-doped CaYA1307 phosphor with 393 nm excitation. However, under the characteristic excitation （402 nm） of Sm^3＋, not only the Sm^3＋ emission but also the Eu^3＋ emission are observed. A possible mechanism of the energy transfer between Sm^3＋ and Eu3＋ is investigated in detail.
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/22/9/098503