One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection
Constructing a one-dimensional (1D) core/shell heterostructure is a rational and efficient way to integrate multiple functional materials into a single device, in which a distinct and reliable interface and suitable energy-band alignment play important roles in optoelectronic applications. Here, usi...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Light Publishing Group
2024-09-01
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| Series: | Light: Advanced Manufacturing |
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| Online Access: | https://www.light-am.com/article/doi/10.37188/lam.2024.040 |
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| _version_ | 1850242781345218560 |
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| author | Yi Ma Chunxiang Xu Mengyang Wu Fumeng Zhang Xiaoxuan Wang Jianqi Dong Qiannan Cui Zengliang Shi |
| author_facet | Yi Ma Chunxiang Xu Mengyang Wu Fumeng Zhang Xiaoxuan Wang Jianqi Dong Qiannan Cui Zengliang Shi |
| author_sort | Yi Ma |
| collection | DOAJ |
| description | Constructing a one-dimensional (1D) core/shell heterostructure is a rational and efficient way to integrate multiple functional materials into a single device, in which a distinct and reliable interface and suitable energy-band alignment play important roles in optoelectronic applications. Here, using a typical magnetron sputtering system, we constructed a 1D ZnO/CdS/CdTe core/shell nanorod arrays radial heterojunction with a well-designed cascade type-II energy band alignment and improved the broadband photodetector (PD) performance. The well-formed shell layers compensated for the defect states on the ZnO surface and extended the photoresponse range from ultraviolet to visible and near-infrared. Moreover, reliable and distinct heterointerfaces with a cascade type-II energy band alignment can guarantee more stable carrier migration and reduce energy loss, promoting effective photogenerated charge carrier separation and resulting in an enhanced photoresponse. The optimised 1D ZnO/CdS/CdTe core/shell heterojunction PD exhibited a fast photoresponse at 0 V bias with high responsivity and detectivity. These results provide an important reference for the rational design and controllable synthesis of multifunctional optoelectronic nanodevices. |
| format | Article |
| id | doaj-art-10825e6fd2ba438181cfe3d37a7e7eed |
| institution | OA Journals |
| issn | 2689-9620 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Light Publishing Group |
| record_format | Article |
| series | Light: Advanced Manufacturing |
| spelling | doaj-art-10825e6fd2ba438181cfe3d37a7e7eed2025-08-20T02:00:12ZengLight Publishing GroupLight: Advanced Manufacturing2689-96202024-09-015341042110.37188/lam.2024.040One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetectionYi MaChunxiang XuMengyang WuFumeng ZhangXiaoxuan WangJianqi DongQiannan CuiZengliang ShiConstructing a one-dimensional (1D) core/shell heterostructure is a rational and efficient way to integrate multiple functional materials into a single device, in which a distinct and reliable interface and suitable energy-band alignment play important roles in optoelectronic applications. Here, using a typical magnetron sputtering system, we constructed a 1D ZnO/CdS/CdTe core/shell nanorod arrays radial heterojunction with a well-designed cascade type-II energy band alignment and improved the broadband photodetector (PD) performance. The well-formed shell layers compensated for the defect states on the ZnO surface and extended the photoresponse range from ultraviolet to visible and near-infrared. Moreover, reliable and distinct heterointerfaces with a cascade type-II energy band alignment can guarantee more stable carrier migration and reduce energy loss, promoting effective photogenerated charge carrier separation and resulting in an enhanced photoresponse. The optimised 1D ZnO/CdS/CdTe core/shell heterojunction PD exhibited a fast photoresponse at 0 V bias with high responsivity and detectivity. These results provide an important reference for the rational design and controllable synthesis of multifunctional optoelectronic nanodevices.https://www.light-am.com/article/doi/10.37188/lam.2024.040magnetron sputteringzno/cds/cdte core/shellradial heterojunctiontype-ii energy bandbroadband photodetector |
| spellingShingle | Yi Ma Chunxiang Xu Mengyang Wu Fumeng Zhang Xiaoxuan Wang Jianqi Dong Qiannan Cui Zengliang Shi One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection Light: Advanced Manufacturing magnetron sputtering zno/cds/cdte core/shell radial heterojunction type-ii energy band broadband photodetector |
| title | One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection |
| title_full | One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection |
| title_fullStr | One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection |
| title_full_unstemmed | One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection |
| title_short | One-dimensional core/shell radial heterojunction with cascade type-II energy-band alignment for enhanced broadband photodetection |
| title_sort | one dimensional core shell radial heterojunction with cascade type ii energy band alignment for enhanced broadband photodetection |
| topic | magnetron sputtering zno/cds/cdte core/shell radial heterojunction type-ii energy band broadband photodetector |
| url | https://www.light-am.com/article/doi/10.37188/lam.2024.040 |
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