期刊
APPLIED SURFACE SCIENCE
卷 301, 期 -, 页码 525-529出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.02.116
关键词
TiO2 nanotubes; XPS; Surfaces; Oxygen vacancy-Ti3+ states; Electrical properties
A facile strategy of cathodic reduction has been developed to successfully prepare Ti3+ self-doped TiO2 nanotube field emitter arrays (TNAs). This strategy significantly reduces the requirements of instruments and resources compared to the conventional strategies and can controllable introduction of Ti3+ sites (oxygen vacancies) into TNAs with morphology retention. The introduced Ti3+ sites (oxygen vacancies) served as electron donors, can substantially improve the conductivity and decrease the work function of TNAs. Importantly, compared to pristine TNAs, the Ti3+ self-doped TNAs show enhanced field emission (FE) properties including sharply decreased turn-on field from 12.49 to 2.67 V/mu m and large FE current density of 4.31 mA/cm(2) at 4.45 v/mu m. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据