Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer
Abstract Large‐area BiOCl nanosheet arrays grown on Cu substrate are transferred onto the polydimethylsiloxane (PDMS) substrate, while the as‐fabricated BiOCl/PDMS photodetector (PD) yields negligible photocurrents under UV light illumination. The introduction of a Ti3C2Tx MXene conduction layer at...
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Wiley-VCH
2020-06-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202000168 |
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| author | Weixin Ouyang Jiaxin Chen Jr‐Hau He Xiaosheng Fang |
| author_facet | Weixin Ouyang Jiaxin Chen Jr‐Hau He Xiaosheng Fang |
| author_sort | Weixin Ouyang |
| collection | DOAJ |
| description | Abstract Large‐area BiOCl nanosheet arrays grown on Cu substrate are transferred onto the polydimethylsiloxane (PDMS) substrate, while the as‐fabricated BiOCl/PDMS photodetector (PD) yields negligible photocurrents under UV light illumination. The introduction of a Ti3C2Tx MXene conduction layer at the interface increases both the photocurrent and dark current by 2–3 orders of magnitude. But this PD suffers from a large dark current (6.7 pA), a low on–off ratio (2.4), and a long decay time (6.87 s) under 350 nm light illumination at 5 V. After the deposition of ZnO nanoparticles (NPs), the optimized PD achieves a low dark current of 86 fA, a high on–off ratio of 7996.5, and a short decay time of 0.93 s. Additionally, the elimination of the Ti3C2Tx MXene layer causes decreased photocurrent and prolonged decay time. The greatly improved photoresponse and response speed of these PDs are ascribed to the increased light absorption brought by the ZnO NPs, the improved carrier separation promoted by the ZnO–BiOCl heterojunction, and the efficient carrier pathways provided by the Ti3C2Tx MXene conduction layers. The construction of heterojunctions and introduction of conduction additives improve the photodetecting performance of these BiOCl‐based PDs, promoting their practical applications in the photoelectric devices. |
| format | Article |
| id | doaj-art-c8f689cfd1bd4e8eb4198350e046ce21 |
| institution | Kabale University |
| issn | 2199-160X |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Wiley-VCH |
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| series | Advanced Electronic Materials |
| spelling | doaj-art-c8f689cfd1bd4e8eb4198350e046ce212025-08-20T03:31:33ZengWiley-VCHAdvanced Electronic Materials2199-160X2020-06-0166n/an/a10.1002/aelm.202000168Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction LayerWeixin Ouyang0Jiaxin Chen1Jr‐Hau He2Xiaosheng Fang3Department of Materials Science Fudan University Shanghai 200433 P. R. ChinaDepartment of Materials Science Fudan University Shanghai 200433 P. R. ChinaDepartment of Materials Science and Engineering City University of Hong Kong Kowloon Hong Kong SAR 999077 P. R. ChinaDepartment of Materials Science Fudan University Shanghai 200433 P. R. ChinaAbstract Large‐area BiOCl nanosheet arrays grown on Cu substrate are transferred onto the polydimethylsiloxane (PDMS) substrate, while the as‐fabricated BiOCl/PDMS photodetector (PD) yields negligible photocurrents under UV light illumination. The introduction of a Ti3C2Tx MXene conduction layer at the interface increases both the photocurrent and dark current by 2–3 orders of magnitude. But this PD suffers from a large dark current (6.7 pA), a low on–off ratio (2.4), and a long decay time (6.87 s) under 350 nm light illumination at 5 V. After the deposition of ZnO nanoparticles (NPs), the optimized PD achieves a low dark current of 86 fA, a high on–off ratio of 7996.5, and a short decay time of 0.93 s. Additionally, the elimination of the Ti3C2Tx MXene layer causes decreased photocurrent and prolonged decay time. The greatly improved photoresponse and response speed of these PDs are ascribed to the increased light absorption brought by the ZnO NPs, the improved carrier separation promoted by the ZnO–BiOCl heterojunction, and the efficient carrier pathways provided by the Ti3C2Tx MXene conduction layers. The construction of heterojunctions and introduction of conduction additives improve the photodetecting performance of these BiOCl‐based PDs, promoting their practical applications in the photoelectric devices.https://doi.org/10.1002/aelm.202000168BiOCl nanosheet arraysheterojunctionsTi 3C 2T x MXeneUV photodetectorsZnO nanoparticles |
| spellingShingle | Weixin Ouyang Jiaxin Chen Jr‐Hau He Xiaosheng Fang Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer Advanced Electronic Materials BiOCl nanosheet arrays heterojunctions Ti 3C 2T x MXene UV photodetectors ZnO nanoparticles |
| title | Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer |
| title_full | Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer |
| title_fullStr | Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer |
| title_full_unstemmed | Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer |
| title_short | Improved Photoelectric Performance of UV Photodetector Based on ZnO Nanoparticle‐Decorated BiOCl Nanosheet Arrays onto PDMS Substrate: The Heterojunction and Ti3C2Tx MXene Conduction Layer |
| title_sort | improved photoelectric performance of uv photodetector based on zno nanoparticle decorated biocl nanosheet arrays onto pdms substrate the heterojunction and ti3c2tx mxene conduction layer |
| topic | BiOCl nanosheet arrays heterojunctions Ti 3C 2T x MXene UV photodetectors ZnO nanoparticles |
| url | https://doi.org/10.1002/aelm.202000168 |
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