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High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures

Hefu Zhong, Libin Tang, Pin Tian, Lijing Yu, Wenbin Zuo, Vincent Teng Orcid Logo

Sensors, Volume: 23, Issue: 4, Start page: 2254

Swansea University Author: Vincent Teng Orcid Logo

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DOI (Published version): 10.3390/s23042254

Abstract

Quantum dots have found significant applications in photoelectric detectors due to their unique electronic and optical properties, such as tunable bandgap. Recently, colloidal quantum dots (CQDs) have attracted much interest because of the ease of controlling the dot size and low production cost. In...

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Published in: Sensors
ISSN: 1424-8220
Published: MDPI AG 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa62679
first_indexed 2023-02-17T08:55:29Z
last_indexed 2023-03-10T04:14:17Z
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spelling 2023-03-09T14:15:12.7710841 v2 62679 2023-02-17 High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures 98f529f56798da1ba3e6e93d2817c114 0000-0003-4325-8573 Vincent Teng Vincent Teng true false 2023-02-17 ACEM Quantum dots have found significant applications in photoelectric detectors due to their unique electronic and optical properties, such as tunable bandgap. Recently, colloidal quantum dots (CQDs) have attracted much interest because of the ease of controlling the dot size and low production cost. In this paper, a high-performance ZnO/PbS heterojunction photodetector was fabricated by spin-coating PbS CQDs onto the surface of a hydrothermally grown vertical array of ZnO nanowires (NWs) on an indium tin oxide (ITO) substrate. Under 940 nm near-infrared light illumination, the device demonstrated a responsivity and detectivity of ~3.9 × 104 A/W and ~9.4 × 1013 Jones, respectively. The excellent performances and low cost of this nanocomposite-based photodetector show that it has the potential for widespread applications ranging from medical diagnosis to environmental monitoring. Journal Article Sensors 23 4 2254 MDPI AG 1424-8220 ZnO NWs, PbS, CQDs, infrared detector 17 2 2023 2023-02-17 10.3390/s23042254 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University Yunnan Province Innovation Team Project (2018HC020), National Key Research and Development Program of China (2019YFB2203404) 2023-03-09T14:15:12.7710841 2023-02-17T08:42:16.5667878 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Hefu Zhong 1 Libin Tang 2 Pin Tian 3 Lijing Yu 4 Wenbin Zuo 5 Vincent Teng 0000-0003-4325-8573 6 62679__26606__7e553a87f2d34bbd9239628251d84283.pdf 62679.pdf 2023-02-17T08:55:06.8427723 Output 2455404 application/pdf Version of Record true This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license false eng https://creativecommons.org/licenses/by/4.0/
title High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
spellingShingle High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
Vincent Teng
title_short High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
title_full High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
title_fullStr High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
title_full_unstemmed High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
title_sort High-Performance Near-Infrared Photodetector Based on PbS Colloidal Quantum Dots/ZnO-Nanowires Hybrid Nanostructures
author_id_str_mv 98f529f56798da1ba3e6e93d2817c114
author_id_fullname_str_mv 98f529f56798da1ba3e6e93d2817c114_***_Vincent Teng
author Vincent Teng
author2 Hefu Zhong
Libin Tang
Pin Tian
Lijing Yu
Wenbin Zuo
Vincent Teng
format Journal article
container_title Sensors
container_volume 23
container_issue 4
container_start_page 2254
publishDate 2023
institution Swansea University
issn 1424-8220
doi_str_mv 10.3390/s23042254
publisher MDPI AG
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
document_store_str 1
active_str 0
description Quantum dots have found significant applications in photoelectric detectors due to their unique electronic and optical properties, such as tunable bandgap. Recently, colloidal quantum dots (CQDs) have attracted much interest because of the ease of controlling the dot size and low production cost. In this paper, a high-performance ZnO/PbS heterojunction photodetector was fabricated by spin-coating PbS CQDs onto the surface of a hydrothermally grown vertical array of ZnO nanowires (NWs) on an indium tin oxide (ITO) substrate. Under 940 nm near-infrared light illumination, the device demonstrated a responsivity and detectivity of ~3.9 × 104 A/W and ~9.4 × 1013 Jones, respectively. The excellent performances and low cost of this nanocomposite-based photodetector show that it has the potential for widespread applications ranging from medical diagnosis to environmental monitoring.
published_date 2023-02-17T14:22:45Z
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score 11.048042

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