Near-infrared downconversion in Eu^(2+) and Pr^(3+) co-doped KSrPO_4 phosphor

作     者：孙家跃 孙翊宁 朱吉成 曾军辉 杜海燕 

作者机构：School of ScienceBeijing Technology and Business University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第5期

页      面：527-531页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 20976002) the Beijing Natural Science Foundation, China (Grant No. 2122012) the Special Funding of the Ministry of Education of Guangdong Province, China (Grant No. 2011B090400100) 

主　　题：optical properties cooperative energy transfer downconversion 

摘      要：A novel near-infrared （NIR） downconversion （DC） phosphor KSrPO4：Eu2＋, Pr3＋ is synthesized by the conventional high temperature solid-state reaction. The Eu2＋ acts as an efficient sensitizer for Pr3＋ in the KSrPO4 host. With broad- band near-ultraviolet light excitation induced by the 4f→5d transition of Eu2＋, the characteristic NIR emission of Pr3＋, peaking at 974 nm and 1019 nm due to 3po →1G4 and 1G4→3H4 transitions, is generated as a result of the energy transfer from Eu2＋ to Pr3＋. The luminescence spectra in both the visible and the NIR regions and the decay lifetime curves of Eu2＋ prove the energy transfer from Eu2＋ to Pr3＋. This Eu2＋ and Pr3＋ co-doped KSrPO4 phosphor may be a promising candidate to modify the spectral mismatch behavior of crystalline solar cells and sunlight.