Influence of Al capping on the photoluminescence of ZnO

被引：6
作者：
Ding, Xi
Fang, Yanjun
Zhao, Ming
Wang, Wei
Sha, Jian
Wang, Yewu [1 ]
机构：
[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China
来源：
OPTICAL MATERIALS EXPRESS | 2017年 / 7卷 / 06期
基金：
中国国家自然科学基金;
关键词：
TEMPERATURE-DEPENDENCE; SURFACE-PLASMON; NANOPARTICLES; EXCITON; NANOSTRUCTURES; ENHANCEMENT; EMISSION; NANORODS; ENERGY; FILMS;
D O I：
10.1364/OME.7.001898
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The low temperature photoluminescence (PL) of ZnO and Al-capped ZnO have been investigated to reveal the influence of Al capping on optical properties of ZnO. Near band edge (NBE) emission of Al-capped ZnO presents an enhancement and negative thermal quenching temperature dependence compared with bare ZnO due to the resonant coupling between excitons in ZnO and surface plasmons (SPs) of Al nanoparticles. SPs have a prominent influence on less localized excitons. This feature of SPs together, with the decreased non-radiative recombination rate, gives rise to the increasing enhancement ratio of NBE emission after Al capping with increasing temperature. (C) 2017 Optical Society of America
引用
收藏
页码：1898 / 1905
页数：8
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