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Field emission enhancement of Au-Si nano-particle-decorated silicon nanowires

Zhao, Fei and Cheng, Guo-an and Zheng, Rui-ting and Zhao, Dan-dan and Wu, Shao-long and Deng, Jian-hua (2011) Field emission enhancement of Au-Si nano-particle-decorated silicon nanowires. Nanoscale Research Letters, 6 (1). pp. 1-5.

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Official URL: http://www.nanoscalereslett.com/content/6/1/176

Abstract

Au-Si nano-particle-decorated silicon nanowire arrays have been fabricated by Au film deposition on silicon nanowire array substrates and then post-thermal annealing under hydrogen atmosphere. Field emission measurements illustrated that the turn-on fields of the non-annealed Au-coated SiNWs were 6.02 to 7.51 V/μm, higher than that of the as-grown silicon nanowires, which is about 5.01 V/μm. Meanwhile, after being annealed above 650°C, Au-Si nano-particles were synthesized on the top surface of the silicon nanowire arrays and the one-dimensional Au-Si nano-particle-decorated SiNWs had a much lower turn-on field, 1.95 V/μm. The results demonstrated that annealed composite silicon nanowire array-based electron field emitters may have great advantages over many other emitters.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:10973
Deposited By:JNCASR
Deposited On:16 Jul 2011 05:23
Last Modified:16 Jul 2011 05:23

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