Negative thermal quenching behavior and long luminescence lifetime of surface-state related green emission in ZnO nanorods

被引：45

作者：

He, Haiping ^{[1
]}

Ye, Zhizhen ^{[1
]}

Lin, Shisheng ^{[1
]}

Zhao, Binghui ^{[1
]}

Huang, Jingyun ^{[1
]}

Tang, Haiping ^{[1
,2
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[2] Baoji Univ Arts & Sci, Dept Mech & Elect Engn, Baoji 721007, Shannxi, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 37期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1021/jp8023099

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：

An experimental study of the luminescence intensity and time decay of the green band (GB) in ZnO nanorods as a function of temperature is reported. The GB intensity shows a negative thermal quenching behavior in the temperature range of 100-200 K. The increase of intensity is accompanied by a remarkable increase of lifetime with a maximum of similar to 1.7 ms at 150 K, which is much longer than those documented values. We suggest that a multiple trapping-detrapping mechanism is responsible for the long lifetime. The results indicate that the surface state greatly influences the dynamics of the GB in ZnO nanostructures.

引用

页码：14262 / 14265

页数：4

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