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Femtosecond light pulse response of photodetectors based on Graphene/n-Si heterojunctions

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dc.contributor.authorScagliotti, M.
dc.contributor.authorSalvato, M.
dc.contributor.authorDe, Crescenzi, M.
dc.contributor.authorKovalchuk, N. G.
dc.contributor.authorKomissarov, I. V.
dc.contributor.authorPrischepa, S. L.
dc.contributor.authorПрищепа, Сергей Леонидович
dc.date.accessioned2024-11-21T09:41:41Z
dc.date.available2024-11-21T09:41:41Z
dc.date.issued2019
dc.description.abstract© 2019 Elsevier LtdTo take advantage of the graphene appealing electronic properties, in this work we present a photodetector (PD) based on graphene/n-silicon heterojunction (GSH). In this device, graphene acts as light transmitter, counter electrode junction element and photocarrier collector. The photodetector has been provided with metal contacts allowing either photovoltaic or photoconductive operation mode. We investigated the response of GSH PD to a 35-femtosecond laser pulse. In the photovoltaic configuration, the PD exhibits rise times of some tens of nanoseconds, detecting light from ultraviolet (275 nm) to infrared (1150 nm). In photoconductive mode applying a gate voltage VG, the external quantum efficiency hugely increases, from a value of 2% up to 200%. Together with the observation of a rise time, that decreases down to a minimum value of about 1 ns, this makes our device even more competitive and comparable with commercial photodetectors.
dc.format.extentС. 643-651
dc.identifier.citationFemtosecond light pulse response of photodetectors based on Graphene/n-Si heterojunctions / Scagliotti, M. [et al.] // Carbon. - 2019. - 152. - P. 643-651. - 10.1016/j.carbon.2019.06.051
dc.identifier.doi10.1016/j.carbon.2019.06.051
dc.identifier.urihttps://www.doi.org/10.1016/j.carbon.2019.06.051
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85067549099&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000483384900070
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/18276
dc.relation.ispartofCarbon
dc.titleFemtosecond light pulse response of photodetectors based on Graphene/n-Si heterojunctions
dc.typeArticle
dspace.entity.typePublication
oaire.citation.volume152
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relation.isAuthorOfPublication.latestForDiscovery831f78c1-6ee4-435f-b1bc-65cb21b6f3ba
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