A new study on the energy transfer in the color-tunable phosphor CaWO4:Bi

被引：91

作者：

Kang, Fengwen

Peng, Mingying ^{[1
]}

机构：

[1] S China Univ Technol, Sch Mat Sci & Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Peoples R China

来源：

DALTON TRANSACTIONS | 2014年 / 43卷 / 01期

基金：

中国国家自然科学基金;

关键词：

DARK-MATTER SEARCH; LUMINESCENT PROPERTIES; SINGLE-CRYSTALS; LONG AFTERGLOW; RED PHOSPHOR; WHITE LEDS; CRESST-II; PHOTOLUMINESCENCE; BISMUTH; MATRIX;

D O I：

10.1039/c3dt51183a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this article, the scheelite-structured phosphors of CaWO4 and Bi3+ doped CaWO4 were successfully synthesized by the high temperature solid state reaction, and the photoluminescence (PL) properties and decay curves of the samples were investigated between 10 and 300 K. The results have shown clearly that the sample emission is tunable via tailoring the energy transfer between the Bi3+ and WO42- anion groups by the selection of either proper bismuth content or excitation scheme. Depending on the excitation scheme, energy transfer does happen from Bi3+ to WO42- or in the reverse, which, however, has never been noticed. Direct spectroscopic evidences as well as the mechanism have been presented for these processes in this work.

引用

页码：277 / 284

页数：8

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