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题名: Ultrasensitive and Fast All-Inorganic Perovskite-Based Photodetector via Fast Carrier Diffusion
作者: Yang, Bin1, 2;  Zhang, Fengying1;  Chen, Junsheng1, 3, 4;  Yang, Songqiu1;  Xia, Xusheng1, 2;  Pullerits, Tonu3, 4;  Deng, Weiqiao1;  Han, Keli1
关键词: CsPbBr3 ;  optoelectronics ;  perovskites ;  photoluminescence ;  single crystals
刊名: ADVANCED MATERIALS
发表日期: 2017-10-25
DOI: 10.1002/adma.201703758
卷: 29, 期:40
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: Low trap-state density, high carrier mobility, and efficient charge carrier collection are key parameters for photodetectors with high sensitivity and fast response time. This study demonstrates a simple solution growth method to prepare CsPbBr3 microcrystals (MCs) with low trap-state density. Time-dependent photoluminescence study with one-photon excitation (OPE) and two-photon excitation (TPE) indicates that CsPbBr3 MCs exhibit fast carrier diffusion with carrier mobility over 100 cm(2) V-1 S-1. Furthermore, CsPbBr3 MC-based photodetectors with high charge carriers' collection efficiency are fabricated. Such photodetectors show ultrahigh responsivity (R) up to 6 x 10(4) A W-1 with OPE and high R up to 6 A W-1 with TPE. The R for OPE is over one order of magnitude higher (the R for TPE is three orders of magnitude higher) than that of previously reported all-inorganic perovskite-based photodetectors. Moreover, the photodetectors exhibit fast response time of approximate to 1 ms, which corresponds to a gain approximate to 10(5) and a gain- bandwidth product of 10(8) Hz for OPE (a gain approximate to 10 (3) and a gain-bandwidth product of 10(6) Hz for TPE).
关键词[WOS]: PHOTOELECTRIC DETECTION APPLICATION ;  OPTICAL-DATA STORAGE ;  SINGLE-CRYSTALS ;  QUANTUM DOTS ;  OPTOELECTRONIC APPLICATION ;  2-PHOTON ABSORPTION ;  HALIDE PEROVSKITES ;  NARROW-BAND ;  CSPBBR3 ;  CH3NH3PBI3
语种: 英语
WOS记录号: WOS:000413406200024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149730
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, State Key Lab Mol React Dynam, DICP, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
3.Lund Univ, Dept Chem Phys, POB 124, S-22100 Lund, Sweden
4.Lund Univ, NanoLund Chem Ctr, POB 124, S-22100 Lund, Sweden

Recommended Citation:
Yang, Bin,Zhang, Fengying,Chen, Junsheng,et al. Ultrasensitive and Fast All-Inorganic Perovskite-Based Photodetector via Fast Carrier Diffusion[J]. ADVANCED MATERIALS,2017,29(40).
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