2D/0D graphene hybrids for visible-blind flexible UV photodetectors

Abstract Nitrogen-functionalized graphene quantum dots (NGQDs) are attractive building blocks for optoelectronic devices because of their exceptional tunable optical absorption and fluorescence properties. Here, we developed a high-performance flexible NGQD/graphene field-effect transistor (NGQD@GFE...

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Autor principal:	Hiroyuki Tetsuka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f3c8b291844a4986b6ebfba76122b1e2
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spelling	oai:doaj.org-article:f3c8b291844a4986b6ebfba76122b1e22021-12-02T16:06:58Z2D/0D graphene hybrids for visible-blind flexible UV photodetectors10.1038/s41598-017-05981-y2045-2322https://doaj.org/article/f3c8b291844a4986b6ebfba76122b1e22017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05981-yhttps://doaj.org/toc/2045-2322Abstract Nitrogen-functionalized graphene quantum dots (NGQDs) are attractive building blocks for optoelectronic devices because of their exceptional tunable optical absorption and fluorescence properties. Here, we developed a high-performance flexible NGQD/graphene field-effect transistor (NGQD@GFET) hybrid ultraviolet (UV) photodetector, using dimethylamine-functionalized GQDs (NMe2-GQDs) with a large bandgap of ca. 3.3 eV. The NMe2-GQD@GFET photodetector exhibits high photoresponsivity and detectivity of ca. 1.5 × 104 A W–1 and ca. 5.5 × 1011 Jones, respectively, in the deep-UV region as short as 255 nm without application of a backgate voltage. The feasibility of these flexible UV photodetectors for practical application in flame alarms is also demonstrated.Hiroyuki TetsukaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hiroyuki Tetsuka 2D/0D graphene hybrids for visible-blind flexible UV photodetectors
description	Abstract Nitrogen-functionalized graphene quantum dots (NGQDs) are attractive building blocks for optoelectronic devices because of their exceptional tunable optical absorption and fluorescence properties. Here, we developed a high-performance flexible NGQD/graphene field-effect transistor (NGQD@GFET) hybrid ultraviolet (UV) photodetector, using dimethylamine-functionalized GQDs (NMe2-GQDs) with a large bandgap of ca. 3.3 eV. The NMe2-GQD@GFET photodetector exhibits high photoresponsivity and detectivity of ca. 1.5 × 104 A W–1 and ca. 5.5 × 1011 Jones, respectively, in the deep-UV region as short as 255 nm without application of a backgate voltage. The feasibility of these flexible UV photodetectors for practical application in flame alarms is also demonstrated.
format	article
author	Hiroyuki Tetsuka
author_facet	Hiroyuki Tetsuka
author_sort	Hiroyuki Tetsuka
title	2D/0D graphene hybrids for visible-blind flexible UV photodetectors
title_short	2D/0D graphene hybrids for visible-blind flexible UV photodetectors
title_full	2D/0D graphene hybrids for visible-blind flexible UV photodetectors
title_fullStr	2D/0D graphene hybrids for visible-blind flexible UV photodetectors
title_full_unstemmed	2D/0D graphene hybrids for visible-blind flexible UV photodetectors
title_sort	2d/0d graphene hybrids for visible-blind flexible uv photodetectors
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f3c8b291844a4986b6ebfba76122b1e2
work_keys_str_mv	AT hiroyukitetsuka 2d0dgraphenehybridsforvisibleblindflexibleuvphotodetectors
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2D/0D graphene hybrids for visible-blind flexible UV photodetectors

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