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Preparation and photoelectric properties of cadmium sulfide quantum dots

Yue Gu, Libin Tang, Xiaopeng Guo, Jinzhong Xiang, Vincent Teng Orcid Logo, Shu Ping Lau

Chinese Physics B, Volume: 28, Issue: 4, Start page: 047803

Swansea University Author: Vincent Teng Orcid Logo

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DOI (Published version): 10.1088/1674-1056/28/4/047803

Abstract

Cadmium sulfide quantum dots (CdS QDs) are widely used in solar cells, light emitting diodes, photocatalysis, and biological imaging because of their unique optical and electrical properties. However, there are some drawbacks in existing preparation techniques for CdS QDs, such as protection of iner...

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Published in: Chinese Physics B
ISSN: 1674-1056 2058-3834
Published: IOP Publishing 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50381
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first_indexed 2019-05-15T16:26:39Z
last_indexed 2019-07-18T21:35:17Z
id cronfa50381
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spelling v2 50381 2019-05-15 Preparation and photoelectric properties of cadmium sulfide quantum dots 98f529f56798da1ba3e6e93d2817c114 0000-0003-4325-8573 Vincent Teng Vincent Teng true false 2019-05-15 EEEG Cadmium sulfide quantum dots (CdS QDs) are widely used in solar cells, light emitting diodes, photocatalysis, and biological imaging because of their unique optical and electrical properties. However, there are some drawbacks in existing preparation techniques for CdS QDs, such as protection of inert gas, lengthy reaction time, high reaction temperature, poor crystallinity, and non-uniform particle size distribution. In this study, we prepared CdS QDs by liquid phase synthesis under ambient room temperature and atmospheric pressure using sodium alkyl sulfonate, CdCl2, and Na2S as capping agent, cadmium, and sulfur sources respectively. This technique offers facile preparation, efficient reaction, low-cost, and controllable particle size. The as-prepared CdS QDs exhibited good crystallinity, excellent monodispersity, and uniform particle size. The responsivity of CdS QDs-based photodetector is greater than $0.3\,{\rm{\mu }}{\rm{A}}/{\rm{W}}$, which makes them suitable for use as ultra-violet (UV) detectors. Journal Article Chinese Physics B 28 4 047803 IOP Publishing 1674-1056 2058-3834 1 4 2019 2019-04-01 10.1088/1674-1056/28/4/047803 http://dx.doi.org/10.1088/1674-1056/28/4/047803 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2023-06-02T15:18:17.4263860 2019-05-15T14:05:42.5785849 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Yue Gu 1 Libin Tang 2 Xiaopeng Guo 3 Jinzhong Xiang 4 Vincent Teng 0000-0003-4325-8573 5 Shu Ping Lau 6 0050381-16052019090501.pdf gu2019(2).pdf 2019-05-16T09:05:01.1730000 Output 1719095 application/pdf Accepted Manuscript true 2020-04-30T00:00:00.0000000 true eng
title Preparation and photoelectric properties of cadmium sulfide quantum dots
spellingShingle Preparation and photoelectric properties of cadmium sulfide quantum dots
Vincent Teng
title_short Preparation and photoelectric properties of cadmium sulfide quantum dots
title_full Preparation and photoelectric properties of cadmium sulfide quantum dots
title_fullStr Preparation and photoelectric properties of cadmium sulfide quantum dots
title_full_unstemmed Preparation and photoelectric properties of cadmium sulfide quantum dots
title_sort Preparation and photoelectric properties of cadmium sulfide quantum dots
author_id_str_mv 98f529f56798da1ba3e6e93d2817c114
author_id_fullname_str_mv 98f529f56798da1ba3e6e93d2817c114_***_Vincent Teng
author Vincent Teng
author2 Yue Gu
Libin Tang
Xiaopeng Guo
Jinzhong Xiang
Vincent Teng
Shu Ping Lau
format Journal article
container_title Chinese Physics B
container_volume 28
container_issue 4
container_start_page 047803
publishDate 2019
institution Swansea University
issn 1674-1056
2058-3834
doi_str_mv 10.1088/1674-1056/28/4/047803
publisher IOP Publishing
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/10.1088/1674-1056/28/4/047803
document_store_str 1
active_str 0
description Cadmium sulfide quantum dots (CdS QDs) are widely used in solar cells, light emitting diodes, photocatalysis, and biological imaging because of their unique optical and electrical properties. However, there are some drawbacks in existing preparation techniques for CdS QDs, such as protection of inert gas, lengthy reaction time, high reaction temperature, poor crystallinity, and non-uniform particle size distribution. In this study, we prepared CdS QDs by liquid phase synthesis under ambient room temperature and atmospheric pressure using sodium alkyl sulfonate, CdCl2, and Na2S as capping agent, cadmium, and sulfur sources respectively. This technique offers facile preparation, efficient reaction, low-cost, and controllable particle size. The as-prepared CdS QDs exhibited good crystallinity, excellent monodispersity, and uniform particle size. The responsivity of CdS QDs-based photodetector is greater than $0.3\,{\rm{\mu }}{\rm{A}}/{\rm{W}}$, which makes them suitable for use as ultra-violet (UV) detectors.
published_date 2019-04-01T15:18:15Z
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score 11.037056

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