The influence of particle size on the luminescence quantum efficiency of nanocrystalline ZnO particles

被引：170

作者：

van Dijken, A ^{[1
]}

Makkinje, J ^{[1
]}

Meijerink, A ^{[1
]}

机构：

[1] Univ Utrecht, Debye Inst, Dept Condensed Matter, NL-3508 TA Utrecht, Netherlands

来源：

JOURNAL OF LUMINESCENCE | 2001年 / 92卷 / 04期

关键词：

nanocrystalline particles; ZnO; quantum efficiency; quantum confinement;

D O I：

10.1016/S0022-2313(00)00262-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A detailed analysis of the luminescence quantum efficiencies of nanocrystalline ZnO particles is presented in this paper. The influence of particle size on the quantum efficiency of the visible emission is studied. It is shown that the quantum efficiency of the visible emission decreases from 20% for particles with a mean radius of 7 Angstrom to 12% for particles with a mean radius of 10 Angstrom. An explanation for the size-dependence of the quantum efficiency is presented. This explanation is based on a model for the relaxation of a photoexcited ZnO particle that has been published previously. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：323 / 328

页数：6

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