TITLE

An array of Eiffel-tower-shape AlN nanotips and its field emission properties

AUTHOR(S)
Yongbing Tang; Hongtao Cong; Zhigang Chen; Huiming Cheng
PUB. DATE
June 2005
SOURCE
Applied Physics Letters;6/6/2005, Vol. 86 Issue 23, p233104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An array of Eiffel-tower-shape AlN nanotips has been synthesized and assembled vertically with Si substrate by a chemical vapor deposition method at 700 °C. The single-crystalline AlN nanotips along [001] direction, including sharp tips with 10–100 nm in diameter and submicron-sized bases, are distributed uniformly with density of 106–107 tips/cm2. Field emission (FE) measurements show that its turn on field is 4.7 V/μm, which is comparable to that of carbon nanotubes, and the fluctuation of FE current is as small as 0.74% for 4 h. It is revealed this nanostructure is available to optimize the FE properties and make the array a promising field emitter.
ACCESSION #
17328463

 

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