Field emission properties of gold nanoparticle-decorated ZnO nanopillars

Yuan Ming Chang*, Man Ling Lin, Tung Yen Lai, Hsin Yi Lee, Chih Ming Lin, Yew-Chuhg Wu, Jenh-Yih Juang

*Corresponding author for this work

研究成果: Article同行評審

47 引文 斯高帕斯(Scopus)

摘要

The structural and optoelectronic properties of ZnO nanopillars (ZnO-NPs) grown on Si substrates by the vapor transport deposition method were investigated. In particular, by varying the deposition duration and hence the morphology of the vertically aligned ZnO-NPs, the resultant field emission characteristics were systematically compared. In addition to identifying the advantageous field emission properties exhibited in the pencil-like ZnO-NPs, we observed that by adhering Au nanoparticles on the surface of the ZnO-NPs the turn-on field and the maximum current density can be drastically improved from 3.15 V/μm and 0.44 mA/cm2 at 5 V/μm for the best ZnO-NPs to 2.65 V/μm and 2.11 mA/cm2 at 5 V/μm for Au/ZnO-NPs, respectively. The enhancement of field emission characteristics that resulted from Au-nanoparticle decoration is discussed on the basis of charge-transfer-induced band structure modifications.

原文English
頁(從 - 到)6676-6682
頁數7
期刊ACS Applied Materials and Interfaces
4
發行號12
DOIs
出版狀態Published - 26 十二月 2012

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