Self-Powered Broadband (UV-NIR) Photodetector Based on 3C-SiC/Si Heterojunction

Foisal, Abu Riduan Md and Dinh, Toan ORCID: https://orcid.org/0000-0002-7489-9640 and Nguyen, Thanh Viet and Tanner, Philip and Phan, Hoang-Phuong and Nguyen, Tuan-Khoa and Haylock, Ben and Streed, Erik W. and Lobino, Mirko and Dao, Dzung Viet (2019) Self-Powered Broadband (UV-NIR) Photodetector Based on 3C-SiC/Si Heterojunction. IEEE Transactions on Electron Devices, 66 (4). pp. 1804-1809. ISSN 0018-9383


Abstract

Self-powered photodetectors (PDs) are highly desirable for many applications, ranging from smart cities to optical communications. Herein, we report on a selfpowered broadband [UV to near-infrared (NIR)] PD based on a single-crystalline SiC (100)/Si (100) heterojunction. In self-powered photovoltaic detection mode, the detector exhibits a high responsivity (2500 V/W at 8.0 x 10 -6 W/cm 2 , 521 nm) and specific detectivity (~1013 Jones at 8.0 x 10 -6 W/cm 2 , 521 nm) under UV, visible, and NIR spectral illuminations thanks to the superior rectification property of the heterojunction which results in significantly reducing the dark current. The device also shows high illumination ON/OFF switching ratios, as high as 2.2x10 7 , with an excellent stability and repeatability. A detailed insight about electron- hole pairs generation, separation, and Fermi-energy level shifting at different illumination conditions has been elucidated via energy band diagrams.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Date Deposited: 17 Jul 2020 05:06
Last Modified: 25 May 2021 02:09
Uncontrolled Keywords: 3C-SiC/Si heterojunction; broadband detector; energy band analysis; highly rectifying; self-powered
Fields of Research (2008): 09 Engineering > 0913 Mechanical Engineering > 091306 Microelectromechanical Systems (MEMS)
Fields of Research (2020): 40 ENGINEERING > 4017 Mechanical engineering > 401705 Microelectromechanical systems (MEMS)
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: https://doi.org/10.1109/TED.2019.2899742
URI: http://eprints.usq.edu.au/id/eprint/38156

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