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Mixed-dimensional nanowires/nanosheet heterojunction of GaSb/Bi2O2Se for self-powered near-infrared photodetection and photocommunication

08.11.25 | Shanghai Jiao Tong University Journal Center

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Mixed-Dimensional Nanowires/Nanosheet Heterojunction of GaSb/Bi2O2Se for Self-Powered Near-Infrared Photodetection and Photocommunication
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/Idarkratios (82 and 182) and ultrafast photoresponse ( Credit: Guangcan Wang, Zixu Sa, Zeqi Zang, Pengsheng Li, Mingxu Wang, Bowen Yang, Xiaoyue Wang, Yanxue Yin, Zai-xing Yang.

In the rapidly advancing field of optoelectronics, self-powered near-infrared (NIR) photodetectors are gaining attention for applications in imaging, environmental monitoring, and optical communication. Recently, a research team from Shandong University led by Professor Zai-xing Yang has made a significant leap forward by constructing a novel mixed-dimensional heterojunction between GaSb nanowires (NWs) and Bi 2 O 2 Se nanosheets (NSs). This breakthrough device demonstrates ultralow dark current, ultrafast response, and multifunctional capabilities — all without an external power supply.

Why This Research Matters

Innovative Design and Mechanisms

Applications and Future Outlook

Stay tuned for more exciting developments from Prof. Yang’s group as they continue redefining the boundaries of self-powered optoelectronics and NIR photodetection technology.

Nano-Micro Letters

10.1007/s40820-025-01793-2

Experimental study

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

3-Jun-2025

Keywords

Photodetection

Article Information

Journal
Nano-Micro Letters
DOI
10.1007/s40820-025-01793-2
Method of Research
Experimental study
Article Publication Date
2025-06-03
Article Title
Mixed-Dimensional Nanowires/Nanosheet Heterojunction of GaSb/Bi2O2Se for Self-Powered Near-Infrared Photodetection and Photocommunication

Contact Information

Bowen Li
Shanghai Jiao Tong University Journal Center
qkzx@sjtu.edu.cn

Source

Original Source
https://link.springer.com/article/10.1007/s40820-025-01793-2

How to Cite This Article

APA:
Shanghai Jiao Tong University Journal Center. (2025, August 11). Mixed-dimensional nanowires/nanosheet heterojunction of GaSb/Bi2O2Se for self-powered near-infrared photodetection and photocommunication. Brightsurf News. https://www.brightsurf.com/news/L7VM7508/mixed-dimensional-nanowiresnanosheet-heterojunction-of-gasbbi2o2se-for-self-powered-near-infrared-photodetection-and-photocommunication.html
MLA:
"Mixed-dimensional nanowires/nanosheet heterojunction of GaSb/Bi2O2Se for self-powered near-infrared photodetection and photocommunication." Brightsurf News, Aug. 11 2025, https://www.brightsurf.com/news/L7VM7508/mixed-dimensional-nanowiresnanosheet-heterojunction-of-gasbbi2o2se-for-self-powered-near-infrared-photodetection-and-photocommunication.html.