Open AccessHigh-responsivity, self-driven visible-near infrared Sb2Se3 nanorod array photodetector
Author(s) -
Yusong Zhang,
Yiran Zhang,
Haiya Ma,
Feng Yang,
Shufang Wang,
Zhiqiang Li
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.442621
Subject(s) - photodetector , optoelectronics , responsivity , materials science , optics , detector , nanorod , specific detectivity , ultrashort pulse , visible spectrum , semiconductor , noise (video) , infrared , physics , laser , nanotechnology , artificial intelligence , computer science , image (mathematics)
Anisotropic antimony selenide (Sb 2 Se 3 ) semiconductor has received considerable attention due to its unique one-dimensional crystal structure and corresponding superior and anisotropic optical and electronic properties. It is a promising material for a wide range of applications related to electronics and optoelectronics. Herein, we demonstrate a high-performance and self-powered Sb 2 Se 3 nanorod array-based core/shell heterojunction detector fabricated on glass substate. The detector shows a wide spectral photoresponse range from visible to near-infrared (405-980 nm). The detector yields a detectivity of as high as 2.06×10 12 Jones in the visible light (638 nm) and that of 1.82×10 12 Jones (830 nm) at zero bias. Due to the strong built-in filed and excellent carrier transport, the detector exhibits ultrafast response speed at both rise (30 μs) and decay (68 μs) processes. Further analysis demonstrates that the noise is mainly generated from the 1/f noise in the low frequency range, while it is affected by the shot noise and generation-recombination noise in high frequency.