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Photoluminescence and polarized photodetection of single ZnO nanowires

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http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000085000025006128000001&idtype=cvips&gifs=yes
Abstract

Single crystal ZnO nanowires are synthesized and configured as field-effect transistors. Photoluminescence and photoconductivity measurements show defect-related deep electronic states giving rise to green-red emission and absorption. Photocurrent temporal response shows that current decay time is significantly prolonged in vacuum due to a slower oxygen chemisorption process. The photoconductivity of ZnO nanowires is strongly polarization dependent. Collectively, these results demonstrate that ZnO nanowire is a remarkable optoelectronic material for nanoscale device applications. (C) 2004 American Institute of Physics.

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