掺杂剂
X射线光电子能谱
材料科学
薄膜
兴奋剂
溅射沉积
扫描电子显微镜
分析化学(期刊)
微观结构
光电发射光谱学
溅射
纳米技术
光电子学
化学工程
化学
复合材料
工程类
色谱法
作者
Aleksandra Szkudlarek,Kamila Kollbek,Sylwia Klejna,Artur Rydosz
标识
DOI:10.1088/2053-1591/aae0d8
摘要
In this paper we investigate the effect of Cr-doping on the electronic structure of CuO and Cr-doped CuO thin films, which are deposited by DC-pulsed magnetron sputtering at 100 °C. Density Functional Theory calculations explain the effect of Cr dopant, which is introduction of the shallow donor band that decreases the charge carrier concentration. The Cr dopant is shown to be responsible for enhanced sensor response and selectivity towards acetone in ideal (dry air) and in realistic conditions (high relative humidity environment). The chemical and phase compositions are investigated by means of Energy Dispersive x-ray spectroscopy, x-ray Photoelectron Spectroscopy and Grazing Incidence x-ray Diffraction. The surface topography and microstructure are analysed by Scanning Electron Microscopy and Atomic Force Microscopy. The high level of control of the whole fabrication process of Cr-doped CuO thin films in one step and its feasibility for industrial up-scaling, open up a way for the commercial application of this material in gas sensing, catalysis, photovoltaics, using this cost-effective technology.
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