Official PDF Translation•Nano-Micro Letters

Mixed-Dimensional Nanowires/Nanosheet Heterojunction of GaSb/Bi2O2Se for Self-Powered Near-Infrared Photodetection and Photocommunication

Authors: Guangcan Wang; Zixu Sa; Zeqi Zang; Pengsheng Li; Mingxu Wang; Bowen Yang; Xiaoyue Wang; Yanxue Yin; Zai-xing Yang

DOI: 10.1007/s40820-025-01793-2Status: Verified Translated Edition

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Key Findings in This Report

• The mixed-dimensional type II heterojunction of GaSb nanowires (NWs) and Bi2O2Se nanosheets (NSs) with a built-in electric field of ~140 meV is successfully constructed. • As-fabricated NW/NS and NW array/NS mixed-dimensional heterojunction photodetectors exhibit as-expected high-performance self-powered photodetection behaviors, including ultralow Idark (0.07 and 0.08 pA), superior Ilight/Idark ratios (82 and 182) and ultrafast photoresponse (<2/2 and 6/4 ms). • As-fabricated NW array/NS mixed-dimensional heterojunction self-powered photodetector promises the future imaging and photocommunication. • The self-powered photodetector performance can be further enhanced by fabricating the NW array/NS mixed-dimensional heterojunction using a contact printing technique.