Time-resolved photoluminescence properties of semiconductor quantum dot superlattices of different microcrystal shapes

被引：6

作者：

Chae, Weon-Sik ^{[1
]}

Choi, Eunjin ^{[1
]}

Jung, Yun Ku ^{[1
]}

Jung, Jin-Seung ^{[2
]}

Lee, Jin-Kyu ^{[3
]}

机构：

[1] Korea Basic Sci Inst, Kangnung 210702, South Korea

[2] Gangneung Wonju Natl Univ, Dept Chem, Kangnung 210702, South Korea

[3] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

NANOPARTICLE SUPERLATTICES; NANOCRYSTALS; CDSE; BLINKING;

D O I：

10.1063/1.4871468

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report time-resolved photoluminescence properties on semiconductor quantum dot (QD) superlattices (SLs) using PL lifetime imaging microscopy at a single particle level. PL lifetime imaging technique clearly reveals that different shaped QD SL microcrystals have different time-resolved PL characteristics. The faceted SL microcrystals consisted of well-organized QDs showed faster recombination rates than those of the spherical microparticles including randomly organized QDs, which can be explained by the different degree of energetic couplings among component QDs due to different packing fraction. (C) 2014 AIP Publishing LLC.

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页数：3

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