Photoluminescence enhancement of colloidal quantum dots embedded in a microcavity

被引：5

作者：

Du Ling-Xiao ^{[1
]}

Hu Lian ^{[1
]}

Zhang Bing-Po ^{[1
]}

Cai Xi-Kun ^{[1
]}

Lou Teng-Gang ^{[1
]}

Wu Hui-Zhen ^{[1
]}

机构：

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

来源：

ACTA PHYSICA SINICA | 2011年 / 60卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CdSe quantum dots; photoluminescence enhancement; microcavity effect; LIGHT-EMITTING DEVICES; OPTICAL-PROPERTIES;

D O I：

10.7498/aps.60.117803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the study of CdSe quantum dot microcavity formed between two distributed Bragg reflectors (DBRs). The active region consisting of CdSe quantum dots is embedded in PMMA. We use the transfer matrix method (TMM) to simulate the reflectivity spectrum of the microcavity. We demonstrate an enhancement of the spontaneous emission from the colloidal CdSe quantum dots in the microcavily. After embedding the QDs in the cavity, the full width at half maximum (FWHM) is narrowed to 7.5 nm compared with 27.9 nm of QDs in free space. The emission of the quantum dots is enhanced by a factor of 3.7 due to the microcavity effect.

引用

页数：5

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