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Enhanced photoconduction of free-standing ZnO nanowire films by L-lysine treatment

Liu, Jinzhang, Park, Jaeku, Park, Kyung Ho, Ahn, Yeonghwan, Park, Ji-Yong, Koh, Ken Ha, & Lee, Soonil (2010) Enhanced photoconduction of free-standing ZnO nanowire films by L-lysine treatment. Nanotechnology, 21(48), 485504-1--485504-7.

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Abstract

Flexible paper-like ZnO nanowire films are fabricated and the effect of L-lysine passivation of the nanowire surfaces on improving the UV photoresponse is studied. We prepare three types of nanowires with different defect contents, and find that the L-lysine treatment can suppress the oxygen-vacancy-related photoluminescence as well as enhance the UV photoconduction. The nanowires with fewer defects gain larger enhancement of UV photoconduction after L-lysine treatment. Reproducible UV photoresponse of the devices in humid air is obtained due to L-lysine surface passivation, ruling out the influence of water molecules in degrading the UV photocurrent.

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8 citations in Scopus
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6 citations in Web of Science®

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ID Code: 44188
Item Type: Journal Article
Keywords: Nanowires, ZnO, Photoresponse, Nanotechnology, Photoconduction
DOI: 10.1088/0957-4484/21/48/485504
ISSN: 0957-4484
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500) > Photonics Optoelectronics and Optical Communications (020504)
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) > Nanoelectronics (100705)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanomaterials (100708)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 IOP (Institute of Physics) Publishing
Deposited On: 20 Sep 2011 08:28
Last Modified: 22 Sep 2011 07:41

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