Journal article 622 views 49 downloads
Low-power-consumption ultraviolet photodetector based on p-NiO/SiO2/n-ZnO
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Shu Ping Lau,
Yanfei Lü
Optics and Laser Technology, Volume: 157, Start page: 108634
Swansea University Author:
Vincent Teng
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DOI (Published version): 10.1016/j.optlastec.2022.108634
Abstract
Ultraviolet (UV) photodetector has found extensive applications, ranging from optical communication to ozone sensing. Wide bandgap metal oxide heterostructures have gained significant interest in the development of UV photodetectors due to their excellent electronic and optical properties, as well a...
| Published in: | Optics and Laser Technology |
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| ISSN: | 0030-3992 |
| Published: |
Elsevier BV
2023
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa61325 |
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| Abstract: |
Ultraviolet (UV) photodetector has found extensive applications, ranging from optical communication to ozone sensing. Wide bandgap metal oxide heterostructures have gained significant interest in the development of UV photodetectors due to their excellent electronic and optical properties, as well as ease of fabrication. However, there are surface and interface issues at these heterostructures that have detrimental effects on device performance. In this work, UV photodetector consisting of p-NiO/SiO2/n-ZnO heterostructure was prepared by RF magnetron sputtering method. The device exhibited remarkable performances, such as having a rectification ratio of 57, responsivity (R) of 5.77 AW-1, external quantum efficiency (EQE) of 1.96×103 % and rise time of 0.048 s at a low power consumption of -0.1 V under 365 nm UV irradiation. This work demonstrated a method for low-cost fabrication of photodetectors with rectification behavior and at low power consumption. |
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| Keywords: |
UV photodetector; Metal oxide semiconductor; Heterostructure; Low power consumption |
| College: |
Faculty of Science and Engineering |
| Start Page: |
108634 |