Ultra-sensitive self-powered position-sensitive detector based on horizontally-aligned double 3C-SiC/Si heterostructures

Foisal, Abu Riduan Md and Qamar, Afzaal and Nguyen, Thanh ORCID: https://orcid.org/0000-0002-3213-6178 and Dinh, Toan ORCID: https://orcid.org/0000-0002-7489-9640 and Phan, Hoang Phuong and Nguyen, Hung and Duran, Pablo Guzman and Streed, Erik W. and Dao, Dzung Viet (2021) Ultra-sensitive self-powered position-sensitive detector based on horizontally-aligned double 3C-SiC/Si heterostructures. Nano Energy, 79:105494. pp. 1-9. ISSN 2211-2855


Position-sensitive detectors (PSDs) utilising the lateral photovoltaic effect (LPE) are actively being explored to achieve precise optical alignments for applications such as surface profiling, motion tracking, and robotics. However, the development of ultrasensitive PSDs has faced great challenges due to the limitation of conventional architectures and nature of photosensitive materials. Herein, we propose a novel PSD nanoarchitecture based on horizontally-aligned double 3C-SiC/Si heterostructures. The unique device configuration allows the effective generation, separation, and migration of photogenerated carriers to one electrode, while eliminating the diffusion of these charge carriers to the other, enabling a large gradient of charge or lateral photovoltage between the electrodes. The PSD showed an ultra-high sensitivity of 1780 mV/mm at an illumination intensity of 5.6 W/cm2 (980 nm) at zero bias conditions (i.e., self-powered), which is approximately 620% more sensitive than that of standard-type 3C-SiC/Si PSD and over 250% larger than the best position-sensitivity detector reported to date. The innovative nanoarchitecture demonstrated in this work holds promises for developing industry-compatible ultra-sensitive self-powered position-sensitive detectors.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 21 Jan 2021 06:35
Last Modified: 22 Jun 2021 11:02
Uncontrolled Keywords: Lateral photovoltaic effect; Position-sensitive detector; Self-powered; 3C-SiC/Si heterojunction; Energy-band analysis
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/10.1016/j.nanoen.2020.105494
URI: http://eprints.usq.edu.au/id/eprint/40562

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