title: Visible to short wavelength infrared In2Se3-nanoflake photodetector gated by a ferroelectric polymer.
abstract: Photodetectors based on two-dimensional (2D) transition-metal dichalcogenides have been studied extensively in recent years. However, the detective spectral ranges, dark current and response time are still unsatisfactory, even under high gate and source-drain bias. In this work, the photodetectors of In2Se3 have been fabricated on a ferroelectric field effect transistor structure. Based on this structure, high performance photodetectors have been achieved with a broad photoresponse spectrum (visible to 1550 nm) and quick response (200 μs). Most importantly, with the intrinsic huge electric field derived from the polarization of ferroelectric polymer (P(VDF-TrFE)) gating, a low dark current of the photodetector can be achieved without additional gate bias. These studies present a crucial step for further practical applications for 2D semiconductors.
authors.affiliation: National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, College of Engineering and Applied Science, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai 200083, People's Republic of China.
authors.forename: Guangjian
authors.initials: G
authors.lastname: Wu
authors.forename: Xudong
authors.initials: X
authors.lastname: Wang
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Hai
authors.initials: H
authors.lastname: Huang
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Shuo
authors.initials: S
authors.lastname: Sun
authors.forename: Hong
authors.initials: H
authors.lastname: Shen
authors.forename: Tie
authors.initials: T
authors.lastname: Lin
authors.forename: Jianlu
authors.initials: J
authors.lastname: Wang
authors.forename: Shangtao
authors.initials: S
authors.lastname: Zhang
authors.forename: Lifeng
authors.initials: L
authors.lastname: Bian
authors.forename: Jinglan
authors.initials: J
authors.lastname: Sun
authors.forename: Xiangjian
authors.initials: X
authors.lastname: Meng
authors.forename: Junhao
authors.initials: J
authors.lastname: Chu