具有优异发光性能的钙钛矿量子点研究进展  

Advancement of Perovskite Quantum Dots with Excellent Luminescence Properties

作　　者：刘翔凯 李泽华 张发焕 皮孝东[1] 

机构地区：[1]浙江大学材料科学与工程学院,杭州310027 [2]夷陵中学,湖北宜昌443005

出　　处：《半导体技术》2016年第4期249-260,共12页Semiconductor Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2013CB632101)

摘　　要：在种类繁多的量子点中,基于钙钛矿结构的量子点以其优异的发光性能,如发光效率高和发光谱线窄,受到了人们极大的关注。有机-无机杂化的CH_3NH_3PbX_3(X=Cl,Br,I)和全无机的CsPbX_3(X=Cl,Br,I)是当前重点研究的钙钛矿量子点。详细介绍了近几年国内外有关CH_3NH_3PbX_3(X=Cl,Br,I)和CsPbX_3(X=Cl,Br,I)钙钛矿量子点的研究进展,着重分析了这些钙钛矿量子点的合成方法、结构特点及优异的发光性能。概述了基于以上两种钙钛矿材料的发光二极管(LED)的研究进展。最后,对钙钛矿量子点存在的不足进行了分析,认为经过不断地完善,钙钛矿量子点有可能成为下一代光电器件的核心材料。Among various quantum dots,the quantum dots with a perovskite structure have recently drawn great attention because of excellent luminescence properties,such as high luminous efficiency and narrow-band light emission with tunable color. The organometal lead halide CH_3NH_3PbX_3（ X = Cl,Br,I） and the cesium lead halide CsPbX_3（ X = Cl,Br,I） perovskite quantum dots are the focus of researches currently. The research progress of CH_3NH_3PbX_3（ X = Cl,Br,I） and CsPbX_3（ X = Cl,Br,I） perovskite quantum dots at home and abroad is introduced in detail. The synthesis method,the structural features and excellent photoluminescence properties of the perovskite quantumdots are analyzed emphatically. The development of the light-emitting diodes（ LEDs） based on the above-mentioned two perovskite materials are briefly introduced. In the end,the disadvantages of perovskite quantum dots are analyzed. It is believed that continuously improved perovskite quantum dots may become one of the most important materials for next-generation optoelectronic devices.

关 键 词：钙钛矿量子点 光致发光 表面钝化 发光二极管(LED) 外量子效率(EQE) 

分 类 号：TN304[电子电信—物理电子学]