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Ultrasensitive Photodetectors Based on Strongly Interacted Layered-Perovskite Nanowires.
Yuan, Meng; Zhao, Yingjie; Feng, Jiangang; Gao, Hanfei; Zhao, Jinjin; Jiang, Lei; Wu, Yuchen.
Afiliação
  • Yuan M; Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
  • Zhao Y; University of Chinese Academy of Sciences (UCAS), Beijing 100049, P. R. China.
  • Feng J; Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
  • Gao H; University of Chinese Academy of Sciences (UCAS), Beijing 100049, P. R. China.
  • Zhao J; Department of Chemical and Biomolecular Sciences, National University of Singapore, 117585 Singapore.
  • Jiang L; Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
  • Wu Y; Ji Hua Laboratory, Foshan, Guangdong 528000, P. R. China.
ACS Appl Mater Interfaces ; 14(1): 1601-1608, 2022 Jan 12.
Article em En | MEDLINE | ID: mdl-34978173
ABSTRACT
Metal-halide layered perovskites, self-assembled quantum wells with alternating insulating interlayer organic cations, and conductive perovskite layers boost the incorporation of multiple functionalities into a single-phase material. Optoelectronic performances in layered perovskites are more sensitive to crystallinity than their 3D counterparts due to the traps and insulating barriers introduced by interlayer cations. Here, we combine the capillary-bridge lithography method for the fabrication of single-crystalline nanowire arrays with strongly interacted layered perovskites for the enhancement of crystallinity and crystallographic orientation purity. Due to regulated nucleation and growth of layered perovskites in capillary bridges and the sulfur-sulfur interaction between interlayer cations, nanowires with pure (101) orientation are realized for underpinning insulating crystal interiors and photoconductive layer edges. Based on these nanowires, ultrasensitive photodetectors are reached with an ultralow dark current of below 10-12 A, an average responsivity of 7.3 × 103 A W-1, an average specific detectivity of 3.9 × 1015 Jones, and a 3 dB bandwidth of 10.3 kHz.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article