Ultra-sensitive self-powered position-sensitive detector based on horizontally-aligned double 3C-SiC/Si heterostructures
Article
Article Title | Ultra-sensitive self-powered position-sensitive detector based on horizontally-aligned double 3C-SiC/Si heterostructures |
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ERA Journal ID | 201288 |
Article Category | Article |
Authors | Foisal, Abu Riduan Md (Author), Qamar, Afzaal (Author), Nguyen, Thanh (Author), Dinh, Toan (Author), Phan, Hoang Phuong (Author), Nguyen, Hung (Author), Duran, Pablo Guzman (Author), Streed, Erik W. (Author) and Dao, Dzung Viet (Author) |
Journal Title | Nano Energy |
Journal Citation | 79, pp. 1-9 |
Article Number | 105494 |
Number of Pages | 9 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 2211-2855 |
2211-3282 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.nanoen.2020.105494 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S2211285520310685 |
Abstract | 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. |
Keywords | Lateral photovoltaic effect; Position-sensitive detector; Self-powered; 3C-SiC/Si heterojunction; Energy-band analysis |
ANZSRC Field of Research 2020 | 401705. Microelectromechanical systems (MEMS) |
Byline Affiliations | Griffith University |
University of Michigan, United States | |
School of Mechanical and Electrical Engineering | |
Institution of Origin | University of Southern Queensland |
ISBN | 22112855 |
https://research.usq.edu.au/item/q6110/ultra-sensitive-self-powered-position-sensitive-detector-based-on-horizontally-aligned-double-3c-sic-si-heterostructures
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