发光学报2026，Vol.47Issue(4)：680-691,12.DOI:10.37188/CJL.20250281
基于Sb2S3单晶/n-GaAs异质结的宽带自驱动光电探测器
Self-powered Broadband Photodetector Based on Sb2S3 Single Crystal/n-GaAs Heterojunction
摘要
Abstract
Broadband photodetectors are of significant application value in fields such as imaging,communication,and spectral analysis.In this work,high-crystalline-quality micrometer-sized Sb2S3 single crystals were prepared by chemical vapor deposition,exhibiting a low defect density of only 4.8×1010 cm-3.An Sb2S3/GaAs heterojunction mod-el was established using SCAPS-1D software,and simulations indicated that the low defect density in Sb2S3 contrib-utes to enhancing the output current and spectral responsivity of the heterojunction,particularly in the ultraviolet and visible wavelength ranges.Based on this,a self-powered heterojunction photodetector based on Sb2S3 single crystal/n-GaAs was fabricated.The device demonstrates excellent photoelectrical response across a broad spectral range from 300 nm to 1 000 nm.Under an optical power density of 0.4 mW·cm-2,it achieves a peak responsivity of over 200 mA·W-1 at 830 nm,a specific detectivity exceeding 3×1010 Jones,a-3 dB bandwidth higher than 1 kHz,and rise/fall response times of 134 µs and 223 µs,respectively.This study provides a feasible approach for the design and fabrication of high-performance,broadband,low-power photodetectors,showing promising potential for applications in integrated optoelectronics and sensing systems.关键词
Sb2S3单晶/光电探测器/SCAPS-1D/宽带Key words
Sb2S3 single crystal/photodetector/SCAPS-1D/broadband分类
能源科技引用本文复制引用
周祥博,张发政,朱骞,申浩,覃名文,田子龙,党甜甜,万鹏..基于Sb2S3单晶/n-GaAs异质结的宽带自驱动光电探测器[J].发光学报,2026,47(4):680-691,12.基金项目
国家自然科学基金(62404101) （62404101）
安徽省高等学校科学研究项目(自然科学类)重点项目(2023AH050266) （自然科学类）
安徽财经大学校级一般研究项目(ACKYC23056)Supported by National Natural Science Foundation of China(62404101) （ACKYC23056）
Key Project of Scientific Research in Natural Scienc-es for Higher Education Institutions in Anhui Province(2023AH050266) （2023AH050266）
General Research Project of Anhui University of Fi-nance and Economics(ACKYC23056) （ACKYC23056）
