Superior Optical Properties of Perovskite Nanocrystals as Single Photon Emitters

被引：331

作者：

Hu, Fengrui ^{[1
,2
]}

Zhang, Huichao ^{[1
,2
,5
]}

Sun, Chun ^{[3
,4
]}

Yin, Chunyang ^{[1
,2
]}

Lv, Bihu ^{[1
,2
]}

Zhang, Chunfeng ^{[1
,2
]}

Yu, William W. ^{[3
,4
]}

Wang, Xiaoyong ^{[1
,2
]}

Zhang, Yu ^{[3
,4
]}

Xiao, Min ^{[1
,2
,6
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[4] Jilin Univ, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

[5] Hangzhou Dianzi Univ, Coll Elect & Informat, Hangzhou 310018, Zhejiang, Peoples R China

[6] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

ACS NANO | 2015年 / 9卷 / 12期

基金：

中国国家自然科学基金;

关键词：

perovskite; nanocrystal; single photon emission; blinking; HALIDE PEROVSKITES; SOLAR-CELLS; QUANTUM-DOT; EMISSION; BLINKING; BR; CL;

D O I：

10.1021/acsnano.5b05769

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The power conversion efficiency of photovoltaic devices based on semiconductor perovskites has reached similar to 20% after just several years of research efforts. With concomitant discoveries of other promising applications in lasers, light-emitting diodes, and photodetectors, it is natural to anticipate what further excitement these exotic perovskites could bring about. Here we report on the observation of single photon emission from single CsPbBr3 perovskite nanocrystals (NCs) synthesized from a facile colloidal approach. Compared with traditional metal-chalcogenide NCs, these CsPbBr3 NCs exhibit nearly 2 orders of magnitude increase in their absorption cross sections at similar emission colors. Moreover, the radiative lifetime of CsPbBr3 NCs is greatly shortened at both room and cryogenic temperatures to favor an extremely fast output of single photons. The above superior optical properties have paved the way toward quantum-light applications of perovskite NCs in various quantum information processing schemes.

引用

页码：12410 / 12416

页数：7

共 43 条

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