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Flexible photodiodes constructed with CdTe nanoparticle thin films and single ZnO nanowires on plastics

Authors
Kwak, KiyeolCho, KyoungahKim, Sangsig
Issue Date
14-10월-2011
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v.22, no.41
Indexed
SCIE
SCOPUS
Journal Title
NANOTECHNOLOGY
Volume
22
Number
41
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/111373
DOI
10.1088/0957-4484/22/41/415204
ISSN
0957-4484
Abstract
We construct a flexible pn heterostructured photodiode using a CdTe nanoparticle thin film and a single ZnO nanowire (NW) on a plastic substrate. The photocurrent characteristics of the flexible photodiode are examined under illumination with 325 nm wavelength light and the photocurrent efficiencies at bias voltages of +/- 2.5 V are estimated to be 8.0 and 2.1 mu A W(-1) under forward and reverse bias conditions, respectively. The photocurrent generation of the pn heterostructured photodiode is dominantly associated with the transport of the photogenerated charge carriers in the single ZnO NW. Furthermore, the operations of our flexible photodiode are investigated in the upwardly and downwardly bent states, as well as in the flat state. S Online supplementary data available from stacks. iop. org/Nano/22/415204/mmedia
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공과대학 (전기전자공학부)
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