| Literature DB >> 27966926 |
Zhenjun Tan1,2, Yue Wu1, Hao Hong3, Jianbo Yin1, Jincan Zhang1,2, Li Lin1, Mingzhan Wang1, Xiao Sun1,2, Luzhao Sun1,2, Yucheng Huang1, Kaihui Liu3, Zhongfan Liu1, Hailin Peng1.
Abstract
Two-dimensional (2D) layered hybrid perovskites of (RNH3)2PbX4 (R is an alkyl and X is a halide) have been recently synthesized and exhibited rich optical properties including fluorescence and exciton effects. However, few studies on transport and optoelectronic measurements of individual 2D perovskite crystals have been reported, presumably owing to the instability issue during electronic device fabrications. Here we report the first photodetector based on individual 2D (C4H9NH3)2PbBr4 perovskite crystals, built with the protection and top contact of graphene film. Both a high responsivity (∼2100 A/W) and extremely low dark current (∼10-10 A) are achieved with a design of interdigital graphene electrodes. Our study paves the way to build high-performance optoelectronic devices based on the emerging 2D single-crystal perovskite materials.Entities:
Year: 2016 PMID： 27966926 DOI： 10.1021/jacs.6b11683
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419