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Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots

Lijing Yu, Pin Tian, Libin Tang, Qun Hao, Vincent Teng Orcid Logo, Hefu Zhong, Biao Yue, Haipeng Wang, Shunying Yan

Nanomaterials, Volume: 12, Issue: 18, Start page: 3212

Swansea University Author: Vincent Teng Orcid Logo

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DOI (Published version): 10.3390/nano12183212

Abstract

Colloidal quantum dots (CQDs) as photodetector materials have attracted much attention in recent years due to their tunable energy bands, low cost, and solution processability. However, their intrinsically low carrier mobility and three-dimensional (3D) confinement of charges are unsuitable for use...

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Published in: Nanomaterials
ISSN: 2079-4991
Published: MDPI AG 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa61286
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spelling 2022-10-12T14:53:13.9946996 v2 61286 2022-09-20 Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots 98f529f56798da1ba3e6e93d2817c114 0000-0003-4325-8573 Vincent Teng Vincent Teng true false 2022-09-20 EEEG Colloidal quantum dots (CQDs) as photodetector materials have attracted much attention in recent years due to their tunable energy bands, low cost, and solution processability. However, their intrinsically low carrier mobility and three-dimensional (3D) confinement of charges are unsuitable for use in fast-response and highly sensitive photodetectors, hence greatly restricting their application in many fields. Currently, 3D topological insulators, such as bismuth telluride (Bi2Te3), have been employed in high-speed broadband photodetectors due to their narrow bulk bandgap, high carrier mobility, and strong light absorption. In this work, the advantages of topological insulators and CQDs were realized by developing a hybrid Bi2Te3/PbS CQDs photodetector that exhibited a maximum responsivity and detectivity of 18 A/W and 2.1 × 1011 Jones, respectively, with a rise time of 128 μs at 660 nm light illumination. The results indicate that such a photodetector has potential application in the field of fast-response and large-scale integrated optoelectronic devices. Journal Article Nanomaterials 12 18 3212 MDPI AG 2079-4991 PbS; colloidal quantum dots; Bi2Te3; photodetector; hybrid 16 9 2022 2022-09-16 10.3390/nano12183212 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University This work was supported by the Yunnan Province Innovation Team Project (2018HC020) and National Key Research and Development Program of China (2019YFB2203404). 2022-10-12T14:53:13.9946996 2022-09-20T14:52:55.1700938 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Lijing Yu 1 Pin Tian 2 Libin Tang 3 Qun Hao 4 Vincent Teng 0000-0003-4325-8573 5 Hefu Zhong 6 Biao Yue 7 Haipeng Wang 8 Shunying Yan 9 61286__25160__492ca32afda140dbaf37a20e9f26393f.pdf 61286.pdf 2022-09-20T14:55:39.2248379 Output 2973490 application/pdf Version of Record true © 2022 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/
title Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
spellingShingle Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
Vincent Teng
title_short Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
title_full Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
title_fullStr Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
title_full_unstemmed Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
title_sort Fast-Response Photodetector Based on Hybrid Bi2Te3/PbS Colloidal Quantum Dots
author_id_str_mv 98f529f56798da1ba3e6e93d2817c114
author_id_fullname_str_mv 98f529f56798da1ba3e6e93d2817c114_***_Vincent Teng
author Vincent Teng
author2 Lijing Yu
Pin Tian
Libin Tang
Qun Hao
Vincent Teng
Hefu Zhong
Biao Yue
Haipeng Wang
Shunying Yan
format Journal article
container_title Nanomaterials
container_volume 12
container_issue 18
container_start_page 3212
publishDate 2022
institution Swansea University
issn 2079-4991
doi_str_mv 10.3390/nano12183212
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 Colloidal quantum dots (CQDs) as photodetector materials have attracted much attention in recent years due to their tunable energy bands, low cost, and solution processability. However, their intrinsically low carrier mobility and three-dimensional (3D) confinement of charges are unsuitable for use in fast-response and highly sensitive photodetectors, hence greatly restricting their application in many fields. Currently, 3D topological insulators, such as bismuth telluride (Bi2Te3), have been employed in high-speed broadband photodetectors due to their narrow bulk bandgap, high carrier mobility, and strong light absorption. In this work, the advantages of topological insulators and CQDs were realized by developing a hybrid Bi2Te3/PbS CQDs photodetector that exhibited a maximum responsivity and detectivity of 18 A/W and 2.1 × 1011 Jones, respectively, with a rise time of 128 μs at 660 nm light illumination. The results indicate that such a photodetector has potential application in the field of fast-response and large-scale integrated optoelectronic devices.
published_date 2022-09-16T04:20:01Z
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score 11.013731

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