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Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection

Lightweight, simple and flexible self-powered photodetectors are urgently required for the development and application of advanced optical systems for the future of wearable electronic technology. Here, using a low-temperature reduction process, we report a chemical approach for producing freestandi...

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Detalles Bibliográficos
Autores principales: Moon, In Kyu, Ki, Bugeun, Yoon, Seonno, Oh, Jungwoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025851/
https://www.ncbi.nlm.nih.gov/pubmed/27634110
http://dx.doi.org/10.1038/srep33525
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author Moon, In Kyu
Ki, Bugeun
Yoon, Seonno
Oh, Jungwoo
author_facet Moon, In Kyu
Ki, Bugeun
Yoon, Seonno
Oh, Jungwoo
author_sort Moon, In Kyu
collection PubMed
description Lightweight, simple and flexible self-powered photodetectors are urgently required for the development and application of advanced optical systems for the future of wearable electronic technology. Here, using a low-temperature reduction process, we report a chemical approach for producing freestanding monolithic reduced graphene oxide papers with different gradients of the carbon/oxygen concentration ratio. We also demonstrate a novel type of freestanding monolithic reduced graphene oxide self-powered photodetector based on a symmetrical metal–semiconductor–metal structure. Upon illumination by a 633-nm continuous wave laser, the lateral photovoltage is observed to vary linfearly with the laser position between two electrodes on the reduced graphene oxide surface. This result may suggest that the lateral photovoltaic effect in the reduced graphene oxide film originates from the built-in electric field by the combination of both the photothermal electric effect and the gradient of the oxygen-to-carbon composition. These results represent substantial progress toward novel, chemically synthesized graphene-based photosensors and suggest one-step integration of graphene-based optoelectronics in the future.
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spelling pubmed-50258512016-09-22 Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection Moon, In Kyu Ki, Bugeun Yoon, Seonno Oh, Jungwoo Sci Rep Article Lightweight, simple and flexible self-powered photodetectors are urgently required for the development and application of advanced optical systems for the future of wearable electronic technology. Here, using a low-temperature reduction process, we report a chemical approach for producing freestanding monolithic reduced graphene oxide papers with different gradients of the carbon/oxygen concentration ratio. We also demonstrate a novel type of freestanding monolithic reduced graphene oxide self-powered photodetector based on a symmetrical metal–semiconductor–metal structure. Upon illumination by a 633-nm continuous wave laser, the lateral photovoltage is observed to vary linfearly with the laser position between two electrodes on the reduced graphene oxide surface. This result may suggest that the lateral photovoltaic effect in the reduced graphene oxide film originates from the built-in electric field by the combination of both the photothermal electric effect and the gradient of the oxygen-to-carbon composition. These results represent substantial progress toward novel, chemically synthesized graphene-based photosensors and suggest one-step integration of graphene-based optoelectronics in the future. Nature Publishing Group 2016-09-16 /pmc/articles/PMC5025851/ /pubmed/27634110 http://dx.doi.org/10.1038/srep33525 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Moon, In Kyu
Ki, Bugeun
Yoon, Seonno
Oh, Jungwoo
Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
title Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
title_full Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
title_fullStr Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
title_full_unstemmed Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
title_short Lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
title_sort lateral photovoltaic effect in flexible free-standing reduced graphene oxide film for self-powered position-sensitive detection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025851/
https://www.ncbi.nlm.nih.gov/pubmed/27634110
http://dx.doi.org/10.1038/srep33525
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