摘要
Antimony selenide(Sb_(2)Se_(3))has recently made considerable photovoltaic,advancements in photoelectrochemical,and photodetector research scenarios,owing to its advantageous material merits and superior optoelectronic properties.By contrast,the exploration of flexible Sb_(2)Se_(3) photoelectric devices are less attempted,though it possesses unique one-dimensional(1D)crystal structure to enable large deformation tolerance.Here,we develop a flexible Sb2Ses thin-film photodetector on polyimide substrate.Thanks to the high-quality SbSes light absorber and benign interfaces at both back contact and heterojunction regions,the carrier dynamics are effectively optimized.The leading flexible Sb_(2)Se_(3) photodetector showcases self-powered and broadband features,with exceptional responsivity of 0.51 A·W^(-1) and realistic detectivity up to 1.32×10^(13) Jones,ultra-fast response speed of 49 ns/351 ns of rise and decay times,and remarkable mechanical deformation stability,flourishing the high-level development for flexible Sb_(2)Se_(3) photodetectors.Interestingly,a tunable single/dual-color flexible imaging system under band alignment modulation,along with a wearable and accurate heart rate/arterial blood oxygen saturation photoplethysmography detection system highlights the great application potential for flexible Sb,Ses photodetectors.
基金
This work was supported by the National Natural Science Foundation of China(Nos.62104156,62074102,22275180,and 2019YFA0405600)
Guangdong Basic and Applied Basic Research Foundation(Nos.2023A1515011256 and 2022A1515010979)China
Shenzhen Science and Technology Program(No.GJHZ20240218113809019).
