High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN
Photodetectors for the ultraviolet (UV) range of the electromagnetic spectrum are in great demand for several technologies, but require the development of novel device structures and materials. Here we report on the high detectivity of UV photodetectors based on well-ordered laterally mesoporous GaN...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
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Royal Society of Chemistry
2017
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| Online Access: | https://eprints.nottingham.ac.uk/44387/ |
| _version_ | 1848796905843195904 |
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| author | Liu, Lei Yang, Chao Patanè, Amalia Yu, Zhiguo Yan, Faguang Wang, Kaiyou Lu, Hongxi Li, Jinmin Zhao, Lixia |
| author_facet | Liu, Lei Yang, Chao Patanè, Amalia Yu, Zhiguo Yan, Faguang Wang, Kaiyou Lu, Hongxi Li, Jinmin Zhao, Lixia |
| author_sort | Liu, Lei |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Photodetectors for the ultraviolet (UV) range of the electromagnetic spectrum are in great demand for several technologies, but require the development of novel device structures and materials. Here we report on the high detectivity of UV photodetectors based on well-ordered laterally mesoporous GaN. The specific detectivity of our devices under UV-illumination reaches values of up to 5.3×1014 Jones. We attribute this high specific detectivity to the properties of the mesoporous GaN/metal contact interface: the trapping of photo-generated holes at the interface lowers the Schottky barrier height thus causing a large internal gain. The high detectivity along with the simple fabrication process make these laterally mesoporous GaN photodetectors of great potential for applications that require selective detection of weak optical signals in the UV range. |
| first_indexed | 2025-11-14T19:55:25Z |
| format | Article |
| id | nottingham-44387 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:55:25Z |
| publishDate | 2017 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-443872020-05-04T18:39:02Z https://eprints.nottingham.ac.uk/44387/ High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN Liu, Lei Yang, Chao Patanè, Amalia Yu, Zhiguo Yan, Faguang Wang, Kaiyou Lu, Hongxi Li, Jinmin Zhao, Lixia Photodetectors for the ultraviolet (UV) range of the electromagnetic spectrum are in great demand for several technologies, but require the development of novel device structures and materials. Here we report on the high detectivity of UV photodetectors based on well-ordered laterally mesoporous GaN. The specific detectivity of our devices under UV-illumination reaches values of up to 5.3×1014 Jones. We attribute this high specific detectivity to the properties of the mesoporous GaN/metal contact interface: the trapping of photo-generated holes at the interface lowers the Schottky barrier height thus causing a large internal gain. The high detectivity along with the simple fabrication process make these laterally mesoporous GaN photodetectors of great potential for applications that require selective detection of weak optical signals in the UV range. Royal Society of Chemistry 2017-03-24 Article PeerReviewed Liu, Lei, Yang, Chao, Patanè, Amalia, Yu, Zhiguo, Yan, Faguang, Wang, Kaiyou, Lu, Hongxi, Li, Jinmin and Zhao, Lixia (2017) High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN. Nanoscale, 24 . pp. 8142-8148. ISSN 2040-3372 http://pubs.rsc.org/en/Content/ArticleLanding/2017/NR/C7NR01290J#!divAbstract doi:10.1039/c7nr01290j doi:10.1039/c7nr01290j |
| spellingShingle | Liu, Lei Yang, Chao Patanè, Amalia Yu, Zhiguo Yan, Faguang Wang, Kaiyou Lu, Hongxi Li, Jinmin Zhao, Lixia High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN |
| title | High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN |
| title_full | High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN |
| title_fullStr | High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN |
| title_full_unstemmed | High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN |
| title_short | High-detectivity ultraviolet photodetectors based on laterally mesoporous GaN |
| title_sort | high-detectivity ultraviolet photodetectors based on laterally mesoporous gan |
| url | https://eprints.nottingham.ac.uk/44387/ https://eprints.nottingham.ac.uk/44387/ https://eprints.nottingham.ac.uk/44387/ |