期刊
NANOTECHNOLOGY
卷 22, 期 37, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/22/37/375201
关键词
-
资金
- NSFC [10804002]
- MOST [2007CB936202, 2009CB623703]
- Research Fund for the Doctoral Program of Higher Education (RFDP)
A seven orders of magnitude increase in the current on/off ratio of ZnO nanowire field-effect transistors (FETs) after Ga(+) irradiation was observed. Transmission electron microscopy characterization revealed that the surface crystal quality of the ZnO nanowire was improved via the Ga(+) treatment. The Ga(+) irradiation efficiently reduces chemisorption effects and decreases oxygen vacancies in the surface layer. The enhanced performance of the nanowire FET was attributed to the decrease of surface trapped electrons and the decrease in carrier concentration.
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