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Nano Research

Article Title

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

Authors

Junjie Si, State Key Laboratory of Silicon Materials, Center for Chemistry of High-Performance & Novel Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
Yang Liu, State Key Laboratory of Silicon Materials, Center for Chemistry of High-Performance & Novel Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
Nana Wang, 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 Road, Nanjing 211816, China
Meng Xu, 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 Road, Nanjing 211816, China
Jing Li, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
Haiping He, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
Jianpu Wang, 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 Road, Nanjing 211816, China
Yizheng Jin, Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China

Keywords

perovskite, light-emitting diodes, cesium, emission properties, external quantum efficiency

Abstract

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.

Graphical Abstract

Publisher

Tsinghua University Press

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