期刊
APPLIED PHYSICS LETTERS
卷 108, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4945330
关键词
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资金
- Fundamental Studies of Perovskite Solar Cells [2015CB932200]
- Jiangsu Natural Science Foundation [BK20131413, BK20140952]
- Jiangsu Specially-Appointed Professor program
- National Natural Science Foundation of China [51172203, 61405091, 11474164]
- China Postdoctoral Science Foundation
- Synergetic Innovation Center for Organic Electronics and Information Displays
Amino acid self-assembled monolayers are used in the fabrication of light-emitting diodes based on organic-inorganic halide perovskites. The monolayers of amino acids provide modified interfaces by anchoring to the surfaces of ZnO charge-transporting layers using carboxyl groups, leaving the amino groups to facilitate the nucleation of MAPbBr(3) perovskite films. This surface-modification strategy, together with chlorobenzene-assisted fast crystallization method, results in good surface coverage and reduced defect density of the perovskite films. These efforts lead to green perovskite light emitting diodes with a low turn-on voltage of 2V and an external quantum efficiency of 0.43% at a brightness of similar to 5000 cd m(-2). (C) 2016 AIP Publishing LLC.
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