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Enhanced field emission properties from well-aligned zinc oxide nanoneedles grown on the Au/Ti/n-Si substrate

Title
Enhanced field emission properties from well-aligned zinc oxide nanoneedles grown on the Au/Ti/n-Si substrate
Authors
Park, CJChoi, DKYoo, JYi, GCLee, CJ
POSTECH Authors
Yi, GC
Date Issued
Jan-2007
Publisher
AMER INST PHYSICS
Abstract
The authors investigated the field emission from vertically well-aligned zinc oxide (ZnO) nanoneedles grown on the Au/Ti/n-Si (100) substrate using metal organic chemical vapor deposition. The turn-on field of ZnO nanoneedles was about 0.85 V/mu m at the current density of 0.1 mu A/cm(2), and the emission current density of 1 mA/cm(2) was achieved at the applied electric field of 5.0 V/mu m. The low turn-on field of the ZnO nanoneedles was attributed to very sharp tip morphology, and the high emission current density was mainly caused by the formation of the stable Ohmic contact between the ZnO nanoneedles and Au film. (c) 2007 American Institute of Physics.
URI
http://oasis.postech.ac.kr/handle/2014.oak/9606
DOI
10.1063/1.2643979
ISSN
0003-6951
Article Type
Article
Citation
APPLIED PHYSICS LETTERS, vol. 90, no. 8, 2007-01
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이규철YI, GYU CHUL
Dept of Materials Science & Enginrg
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