期刊
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
卷 206, 期 1, 页码 179-182出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.200824338
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资金
- Korea University [K0819991]
We demonstrate that drain-source (V(ds)) and gate-source voltages (V(gs)) of a zinc oxide nanowire (ZnO NW) field-effect transistor (FET) can be optimized to increase UV photodetection sensitivity. Investigation of the relationship between the sensitivity and the applied voltages reveals that the photodetector is most sensitive when it operates (1) with highest on/off current ratio and (2) at the bottom of the subthreshold swing region. Our results can be broadly applied to maximize sensitivity of other FET-based sensors and detectors. A ZnO NW photodetector is most sensitive when V(gs) is positioned at the bottom of the subthreshold swing region.0 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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