| Gate-activated photoresponse in a graphene p-n junction. | |
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MedLine Citation:
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PMID: 21879753 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We study photodetection in graphene near a local electrostatic gate, which enables active control of the potential landscape and carrier polarity. We find that a strong photoresponse only appears when and where a p-n junction is formed, allowing on-off control of photodetection. Photocurrents generated near p-n junctions do not require biasing and can be realized using submicron gates. Locally modulated photoresponse enables a new range of applications for graphene-based photodetectors including, for example, pixilated infrared imaging with control of response on subwavelength dimensions. |
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Authors:
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Max Christian Lemme; Frank Koppens; Abram Falk; Mark Rudner; Hongkun Park; Leonid Levitov; Charles Masamed Marcus |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-31 |
Journal Detail:
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Title: Nano letters Volume: - ISSN: 1530-6992 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-9-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101088070 Medline TA: Nano Lett Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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