Near-infrared downconversion in Eu2＋ and Pr3＋ co-doped KSrPO4 phosphor

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 transitio...

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Bibliographic Details
Published in:中国物理B：英文版 2013-05 (5), p.527-531
Main Author: 孙家跃 孙翊宁 朱吉成 曾军辉 杜海燕
Format: Article
Language:English
Subjects:
下变频
发光光谱
固相反应合成
掺镨
紫外光激发
能量转移
荧光体
近红外
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Summary: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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/22/5/057803