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Electrochemical and Solid State Letters, Vol.13, No.7, K63-K66, 2010
Photocatalytic Activity and Electron Field Emission of Necked ZnO:Bi Nanowires
Bismuth-doped ZnO nanowires were synthesized by a vapor transfer process at 600 degrees C. Raman spectra revealed that a slight blueshift occurred in ZnO:Bi (438 cm(-1)) nanowires in contrast to ZnO (436 cm(-1)) nanowires. The X-ray photoelectron spectrum showed that the ZnO: Bi nanowires contained the Bi dopant as Bi-0 and Bi3+. The turn-on fields of the ZnO: Bi and ZnO nanowires were similar to 4.19 and 6.57 V/mu m, respectively. Because the ZnO:Bi nanowires exhibited a redshift of absorbance spectrum with a high ratio in the UV range, the photocatalytic activities of ZnO: Bi nanowires were considered superior to those of ZnO nanowires. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3387638] All rights reserved.