Browsing by Author "Kao, Tzu-Hsuan"

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Opto-electrical properties of Sb-doped p-type ZnO nanowires
(2014-03-17)
Kao, Tzu-Hsuan
;
Chen, Jui-Yuan
;
Chiu, Chung-Hua
;
Huang, Chun-Wei
;
Wu, Wen-Wei
P-type ZnO nanowires (NWs) have attracted much attention in the past years due to the potential applications for optoelectronics and piezotronics. In this study, we have synthesized Sb-doped p-type ZnO NWs on Si (100) substrates by chemical vapor deposition with Aucatalyst. The Sb-doped ZnO NWs are single crystalline with high density, grown along [1-1-2] direction. The doping percentage of Sb is about 2.49%, which has been confirmed by X-ray photoelectron spectroscopy. The ZnO NW field effect transistor demonstrated its p-type characteristics. A high responsivity to ultraviolet photodetection was also observed. In addition, compared to intrinsic ZnO NWs, the conductivity of the Sb-doped ZnO NWs exhibited similar to 2 orders of magnitude higher. These properties make the p-type ZnO NWs a promising candidate for electronic and optoelectronic devices. (C) 2014 AIP Publishing LLC.