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Research Article

Green light-emitting diodes based on hybrid perovskite films with mixed cesium and methylammonium cations

Junjie Si1, Yang Liu1, Nana Wang2, Meng Xu2, Jing Li3, Haiping He3( ), Jianpu Wang2( ), Yizheng Jin4( )
State Key Laboratory of Silicon MaterialsCenter for Chemistry of High-Performance & Novel MaterialsSchool of Materials Science and Engineering, Zhejiang UniversityHangzhou310027China
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu RoadNanjing211816China
State Key Laboratory of Silicon MaterialsSchool of Materials Science and Engineering, Zhejiang UniversityHangzhou310027China
Center for Chemistry of High-Performance & Novel MaterialsState Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang UniversityHangzhou310027China
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Abstract

We report the formation of high-quality Cs0.4MA0.6PbBr3 thin films with nearly full surface coverage and good emission properties upon the introduction of Cs+ into perovskite crystals. The Cs0.4MA0.6PbBr3 thin films were applied as emissive layers in light-emitting diodes. A maximum external quantum efficiency of ~2.0% was achieved for these green-emitting devices.

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Keywords

perovskitelight-emitting diodescesiumemission propertiesexternal quantum efficiency

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Nano Research
Volume 10 Issue 4,
April 2017
Pages 1329-1335
DOI: 10.1007/s12274-017-1432-7

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Cite this article:
Si J, Liu Y, Wang N, et al. Green light-emitting diodes based on hybrid perovskite films with mixed cesium and methylammonium cations. Nano Research, 2017, 10(4): 1329-1335. https://doi.org/10.1007/s12274-017-1432-7
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Received: 25 September 2016
Revised: 07 December 2016
Accepted: 21 December 2016
Published: 20 February 2017
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016