Efficient and Switchable Manganese Luminescence in MnF2:Ce Nanocrystals

被引：15

作者：

Li, Min ^{[1
]}

Yu, Xue-Feng ^{[1
]}

Yu, Wen-Yuan ^{[1
]}

Zhou, Jing ^{[1
]}

Peng, Xiao-Niu ^{[1
]}

Wang, Qu-Quan ^{[1
]}

机构：

[1] Wuhan Univ, Dept Phys, Key Lab Acoust & Photon Mat & Devices, Minist Educ, Wuhan 430072, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 47期

关键词：

ENERGY-TRANSFER; QUANTUM DOTS; FLUORESCENCE; PHOTOLUMINESCENCE; CAF2;

D O I：

10.1021/jp9081307

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The MnF2:Ce nanocrystals with bright Mn2+ luminescence at room temperature were synthesized via a hydrothermal method using polyethylenimine as surfactant. The Ce3+ -> Mn2+ energy-transfer efficiency Could reach 65%, and the highest Mn2+ luminescence quantum efficiency was 14% in the MnF2:10%Ce nanocrystals. More interestingly, the Mn2+ luminescence could be reversibly switched on and off by controlling the Ce3+ <-> Ce4+ redox couples. Our Studies may provide new possibilities for improving and regulating the Mn2+ luminescence for fabricating redox switches and biological sensors.

引用

页码：20271 / 20274

页数：4

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