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Ultrathin Ruddlesden-Popper Perovskite Heterojunction for Sensitive Photodetection.
Fu, Qundong; Wang, Xiaolei; Liu, Fucai; Dong, Yuxin; Liu, Zirui; Zheng, Shoujun; Chaturvedi, Apoorva; Zhou, Jiadong; Hu, Peng; Zhu, Zhuqing; Bo, Fang; Long, Yi; Liu, Zheng.
Afiliação
  • Fu Q; Centre for Programmed Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
  • Wang X; CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, Singapore, 637553, Singapore.
  • Liu F; Institute of Modern Optics, Key Laboratory of Optical Information Science and Technology, Nankai University, Tianjin, 300350, China.
  • Dong Y; School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China.
  • Liu Z; Institute of Modern Optics, Key Laboratory of Optical Information Science and Technology, Nankai University, Tianjin, 300350, China.
  • Zheng S; School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China.
  • Chaturvedi A; Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences and The Photonics Institute, Nanyang Technological University, Singapore, 637371, Singapore.
  • Zhou J; Centre for Programmed Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
  • Hu P; Centre for Programmed Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
  • Zhu Z; School of Physics, Northwest University, Xi'an, 710069, P. R. China.
  • Bo F; Key Laboratory of Optoelectronic Technology of Jiangsu Province, School of Physical Science and Technology, Nanjing Normal University, Nanjing, 210023, Jiangsu, China.
  • Long Y; The MOE Key Laboratory of Weak Light Nonlinear Photonics, TEDA Applied Physics Institute, and School of Physics, Nankai University, Tianjin, 300457, China.
  • Liu Z; Centre for Programmed Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
Small ; 15(39): e1902890, 2019 Sep.
Article em En | MEDLINE | ID: mdl-31390149
Thanks to their unique optical and electric properties, 2D materials have attracted a lot of interest for optoelectronic applications. Here, the emerging 2D materials, organic-inorganic hybrid perovskites with van der Waals interlayer interaction (Ruddlesden-Popper perovskites), are synthesized and characterized. Photodetectors based on the few-layer Ruddlesden-Popper perovskite show good photoresponsivity as well as good detectivity. In order to further improve the photoresponse performance, 2D MoS2 is chosen to construct the perovskite-MoS2 heterojunction. The performance of the hybrid photodetector is largely improved with 6 and 2 orders of magnitude enhancement for photoresponsivity (104 A W-1 ) and detectivity (4 × 1010 Jones), respectively, which demonstrates the facile charge separation at the interface between perovskite and MoS2 . Furthermore, the contribution of back gate tuning is proved with a greatly reduced dark current. The results demonstrated here will open up a new field for the investigation of 2D perovskites for optoelectronic applications.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Small Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Singapura País de publicação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Small Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Singapura País de publicação: Alemanha