ZnO：Zn荧光材料的光电子时间分辨谱和荧光光谱

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摘要：采用微波吸收法，测量了ZnO及ZnO：Zn荧光粉末材料受到超短激光脉冲激发后其导带电子的衰减过程，并测量了室温下荧光材料的吸收光谱和发射光谱。发现ZnO材料的光电子寿命为64 ns，而ZnO：Zn荧光材料的的光电子寿命为401 ns。分析认为ZnO：Zn寿命的延长是由于材料中缺陷结构的增加导致电子在导带上的弛豫时间变长。

关键词：微波吸收;光电子;氧化锌

Abstract：The process of decay of photo-generated electrons in the conduction band of ZnO:Zn and ZnO powder materials after excitation with a ultra-short pulse laser has been investigated in this paper by microwave absorption method. The excitation and emission spectra of ZnO:Zn were measured at room temperature. It was measured that the lifetime of photoelectrons in the materials ZnO and ZnO:Zn are 64 ns and 336 ns respectively. It is believed that the increase of the lifetime in the material of ZnO:Zn is due to the prolong of relaxation time caused by the defect structure in the material.

Key words：Microwave absorption method;Photoelectron;ZnO

收稿日期: 2004-11-08 修订日期: 2005-03-28

中图分类号:

O482.3

通讯作者: 董国义

引用本文:

董国义，窦军红, 葛世艳，林琳，郑一博，韦志仁 . ZnO：Zn荧光材料的光电子时间分辨谱和荧光光谱[J]. 光谱学与光谱分析, 2005, 25(11): 1753-1755.
DONG Guo-yi, DOU Jun-hong, GE Shi-yan, LIN Lin, ZHENG Yi-bo, WEI Zhi-ren . Photoelectron Time-Resolved Spectrum and Phosphor Spectrum of Luminescent Material ZnO by Microwave Absorption Method. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(11): 1753-1755.

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https://www.gpxygpfx.com/CN/Y2005/V25/I11/1753