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A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets

A phototransistor based on a hybrid of graphene and BP nanosheets with a facile fabrication method and remarkable performance is presented. Unlike previously reported single BP flake-based devices, this phototransistor employs diverse BP nanosheets with different sizes and layer numbers. The wet tra...

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Detalles Bibliográficos
Autores principales: Zhou, Guigang, Li, Zhongjun, Ge, Yanqi, Zhang, Han, Sun, Zhenhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416809/
https://www.ncbi.nlm.nih.gov/pubmed/36133069
http://dx.doi.org/10.1039/c9na00528e
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author Zhou, Guigang
Li, Zhongjun
Ge, Yanqi
Zhang, Han
Sun, Zhenhua
author_facet Zhou, Guigang
Li, Zhongjun
Ge, Yanqi
Zhang, Han
Sun, Zhenhua
author_sort Zhou, Guigang
collection PubMed
description A phototransistor based on a hybrid of graphene and BP nanosheets with a facile fabrication method and remarkable performance is presented. Unlike previously reported single BP flake-based devices, this phototransistor employs diverse BP nanosheets with different sizes and layer numbers. The wet transfer process of graphene is exploited to integrate the liquid-exfoliated BP nanosheets into the device smoothly. Due to the diversity of BP nanosheets, the device demonstrates a broadband photo-response in the spectrum from 360 nm to 785 nm. The photo-response mechanism is revealed to be the photogating effect caused by the discrete BP nanosheets adsorbed on graphene. The phototransistor has a responsivity of 7.7 × 10(3) A W(−1) in the near-UV region with a wide conductive channel of 200 μm. Moreover, the simplified wet transfer process of graphene leaves a self-encapsulated layer of PMMA on the as-prepared device, inducing a good atmospheric stability in the device. This report provides a valid, implantable, and facile strategy to apply BP nanosheets in a broadband, high-performing and air-stable photodetector.
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spelling pubmed-94168092022-09-20 A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets Zhou, Guigang Li, Zhongjun Ge, Yanqi Zhang, Han Sun, Zhenhua Nanoscale Adv Chemistry A phototransistor based on a hybrid of graphene and BP nanosheets with a facile fabrication method and remarkable performance is presented. Unlike previously reported single BP flake-based devices, this phototransistor employs diverse BP nanosheets with different sizes and layer numbers. The wet transfer process of graphene is exploited to integrate the liquid-exfoliated BP nanosheets into the device smoothly. Due to the diversity of BP nanosheets, the device demonstrates a broadband photo-response in the spectrum from 360 nm to 785 nm. The photo-response mechanism is revealed to be the photogating effect caused by the discrete BP nanosheets adsorbed on graphene. The phototransistor has a responsivity of 7.7 × 10(3) A W(−1) in the near-UV region with a wide conductive channel of 200 μm. Moreover, the simplified wet transfer process of graphene leaves a self-encapsulated layer of PMMA on the as-prepared device, inducing a good atmospheric stability in the device. This report provides a valid, implantable, and facile strategy to apply BP nanosheets in a broadband, high-performing and air-stable photodetector. RSC 2019-12-20 /pmc/articles/PMC9416809/ /pubmed/36133069 http://dx.doi.org/10.1039/c9na00528e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zhou, Guigang
Li, Zhongjun
Ge, Yanqi
Zhang, Han
Sun, Zhenhua
A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
title A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
title_full A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
title_fullStr A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
title_full_unstemmed A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
title_short A self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
title_sort self-encapsulated broadband phototransistor based on a hybrid of graphene and black phosphorus nanosheets
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416809/
https://www.ncbi.nlm.nih.gov/pubmed/36133069
http://dx.doi.org/10.1039/c9na00528e
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