Field emission from various CuO nanostructures

被引：328

作者：

Hsieh, CT ^{[1
]}

Chen, JM

Lin, HH

Shih, HC

机构：

[1] Ind Technol Res Inst, Mat Res Labs, Hsinchu 310, Taiwan

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 16期

关键词：

D O I：

10.1063/1.1619229

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Three types of CuO nanostructures-the nanorod, nanofiber, and nanoparticle-have been grown by using a self-catalytic growth process at 400, 500, and 600 degreesC, respectively. Field-emission (FE) properties of the CuO nanostructures were investigated. The results indicated that the FE current was significantly affected by the morphologies of the CuO samples. Typical turn-on voltage for the CuO nanofiber array was detected at about 6-7 V/mum with an emission area of 1 mm(2). Based on Fowler-Nordheim plot, the values of work function for the nanofiber array were estimated in ranges of 0.56 to 2.62 and 0.30 to 1.39 eV from a two-stage linearity plot. X-ray photoelectron spectroscopy analysis showed no obvious changes in chemical composition of the nanofiber array before and after FE tests. According to the analyses, the highly ordered CuO nanofiber array can be a promising candidate for FE emitters. (C) 2003 American Institute of Physics.

引用

页码：3383 / 3385

页数：3

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