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Ultraviolet photodetection of flexible ZnO nanowire sheets in polydimethylsiloxane polymer

Liu, Jinzhang, Motta, Nunzio, & Lee, Soonil (2012) Ultraviolet photodetection of flexible ZnO nanowire sheets in polydimethylsiloxane polymer. Beilstein Journal of Nanotechnology, 3, pp. 353-359.

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Abstract

ZnO nanowires are normally exposed to an oxygen atmosphere to achieve high performance in UV photodetection. In this work we present results on a UV photodetector fabricated using a flexible ZnO nanowire sheet embedded in polydimethylsiloxane (PDMS), a gas-permeable polymer, showing reproducible UV photoresponse and enhanced photoconduction. PDMS coating results in a reduced response speed compared to that of a ZnO nanowire film in air. The rising speed is slightly reduced, while the decay time is prolonged by about a factor of four. We conclude that oxygen molecules diffusing in PDMS are responsible for the UV photoresponse

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ID Code: 50172
Item Type: Journal Article
Keywords: permeable polymer, photoresponse, polydimethylsiloxane, UV photodetection, ZnO nanowires
DOI: 10.3762/bjnano.3.41
ISSN: 2190-4286
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Functional Materials (091205)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanofabrication Growth and Self Assembly (100706)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanomaterials (100708)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 (please consult the author).
Deposited On: 09 May 2012 14:39
Last Modified: 12 May 2012 14:02

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