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High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction

Menghan Jia Orcid Logo, Libin Tang Orcid Logo, Vincent Teng Orcid Logo, Yanfei Lü Orcid Logo

Applied Surface Science, Volume: 643, Start page: 158641

Swansea University Author: Vincent Teng Orcid Logo

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DOI (Published version): 10.1016/j.apsusc.2023.158641

Abstract

Ultraviolet (UV) photodetectors have found wide-ranging applications, ranging from optical communications to chemical detection. High performance UV photodetectors that can be self-powered are highly desirable in many applications as they can minimize energy consumption during operation. Herein, a s...

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Published in: Applied Surface Science
ISSN: 0169-4332 1873-5584
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa64767
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spelling v2 64767 2023-10-18 High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction 98f529f56798da1ba3e6e93d2817c114 0000-0003-4325-8573 Vincent Teng Vincent Teng true false 2023-10-18 EEEG Ultraviolet (UV) photodetectors have found wide-ranging applications, ranging from optical communications to chemical detection. High performance UV photodetectors that can be self-powered are highly desirable in many applications as they can minimize energy consumption during operation. Herein, a self-powered UV photodetector, which consisted of poly(9-vinylcarbazole) (PVK)/amorphous-WO3 organic-inorganic heterojunction with PEDOT:PSS as a hole transport layer, was fabricated using a two-step method at low temperature. The effect of WO3, PVK and PEDOT:PSS films on the performances of the photodetector was also investigated. Under optimized parameters, the PEDOT:PSS/PVK/WO3 photodetector exhibited a maximum responsivity of 12.41 AW−1, specific detectivity of 1.80 × 1013 Jones, photo-dark current ratio of 103 at reverse bias and typical rectification characteristic when exposed to 365 nm light irradiation. The photoelectric conversion mechanism of this novel PVK/WO3 heterojunction is discussed using energy band diagrams. This work presents a method to produce a high performance WO3-based heterostructure at low temperature, which has the potential for UV imaging. Journal Article Applied Surface Science 643 158641 Elsevier BV 0169-4332 1873-5584 Self-powered, UV photodetector, Organic-inorganic, PVK/WO3 heterojunction, Low temperature 15 1 2024 2024-01-15 10.1016/j.apsusc.2023.158641 http://dx.doi.org/10.1016/j.apsusc.2023.158641 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University This work was supported by the National Natural Science Foundation of China (Nos. 61106098, 11864044, 61965016, 61765015, 62241506 and 62175209); the Research Innovation Fund for Graduate Students of Yunnan University, China (No. KC-22221203) and the Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering. 2023-11-20T13:31:23.9103970 2023-10-18T08:56:33.4350463 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Menghan Jia 0009-0002-0561-4637 1 Libin Tang 0000-0002-7174-2963 2 Vincent Teng 0000-0003-4325-8573 3 Yanfei Lü 0000-0002-5980-5052 4 64767__28814__eaffd0d3f8b24d4597d343c79c3d3f1d.pdf 64767.pdf 2023-10-18T11:10:49.6574867 Output 3373284 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy. false eng https://creativecommons.org/licenses/by/4.0/
title High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
spellingShingle High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
Vincent Teng
title_short High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
title_full High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
title_fullStr High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
title_full_unstemmed High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
title_sort High-performance self-powered ultraviolet photodetector based on PVK/amorphous-WO3 organic-inorganic heterojunction
author_id_str_mv 98f529f56798da1ba3e6e93d2817c114
author_id_fullname_str_mv 98f529f56798da1ba3e6e93d2817c114_***_Vincent Teng
author Vincent Teng
author2 Menghan Jia
Libin Tang
Vincent Teng
Yanfei Lü
format Journal article
container_title Applied Surface Science
container_volume 643
container_start_page 158641
publishDate 2024
institution Swansea University
issn 0169-4332
1873-5584
doi_str_mv 10.1016/j.apsusc.2023.158641
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
url http://dx.doi.org/10.1016/j.apsusc.2023.158641
document_store_str 1
active_str 0
description Ultraviolet (UV) photodetectors have found wide-ranging applications, ranging from optical communications to chemical detection. High performance UV photodetectors that can be self-powered are highly desirable in many applications as they can minimize energy consumption during operation. Herein, a self-powered UV photodetector, which consisted of poly(9-vinylcarbazole) (PVK)/amorphous-WO3 organic-inorganic heterojunction with PEDOT:PSS as a hole transport layer, was fabricated using a two-step method at low temperature. The effect of WO3, PVK and PEDOT:PSS films on the performances of the photodetector was also investigated. Under optimized parameters, the PEDOT:PSS/PVK/WO3 photodetector exhibited a maximum responsivity of 12.41 AW−1, specific detectivity of 1.80 × 1013 Jones, photo-dark current ratio of 103 at reverse bias and typical rectification characteristic when exposed to 365 nm light irradiation. The photoelectric conversion mechanism of this novel PVK/WO3 heterojunction is discussed using energy band diagrams. This work presents a method to produce a high performance WO3-based heterostructure at low temperature, which has the potential for UV imaging.
published_date 2024-01-15T13:31:24Z
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