张滨
,
孙玉珍
,
王文皓
物理测试
针对一种进口和国产的ITO靶材,用AES(SEM、SAM)、XPS、UPS和XRD进行了比较研究,通过研究发现两种样品的差别,为提高国产靶材的质量,提供一些改进意见.
关键词:
ITO靶材
,
AES
,
XPS
,
UPS
,
SEM
,
XRD
张滨
,
孙玉珍
,
王文皓
物理测试
详细介绍了紫外光电子谱（UPS）测量功函数的原理与实验方法，测量了金属镍、银和ITO靶材的功函数，并对测量方法和误差进行了讨论，表明这个方法更适用于测量功函数变化。
关键词:
功函数
,
UPS
王胜刚
,
孙淼
,
龙康
中国腐蚀与防护学报
doi:10.11902/1005.4537.2016.096
利用紫外光电子能谱(UPS)对比表征了纳米和普通晶粒的304不锈钢、工业纯铝以及工业纯铁室温时的价电子结构.利用X射线光电子能谱(XPS)表征了上述材料在不同浓度盐酸溶液中浸泡不同时间后,表面氧化膜的电子结构;以及纳米和普通晶粒的304不锈钢在空气中高温氧化(室温至900℃升温阶段,900℃下恒温24 h)后,氧化膜的电子结构.根据这些实验结果建立了金属材料腐蚀性能与材料的价电子结构和氧化膜电子结构之间的关系,提出了金属材料腐蚀性能本征参量概念.
关键词:
腐蚀
,
价电子结构
,
氧化膜电子结构
,
X射线光电子能谱
,
紫外光电子能谱
H.T.Cao
金属学报(英文版)
Al and Mn co-doped-ZnO films have been prepared at room temperature by DC reactive magnetron sputtering technique. The optical absorption coefficient, apparent and fundamental band gap, and work function of the films have been investigated using optical spectroscopy, band structure analyses and ultraviolet photoelectron spectroscopy (UPS). ZnO films have direct allowed transition band structure, which has been confirmed by the character of the optical absorption coefficient. The apparent band gap has been found directly proportional to N^2/3, showing that the effect of Burstein-Moss shift on the band gap variations dominates over the many-body effect. With only standard cleaning protocols, the work function of ZnO: (Al, Mn) and ZnO: Al films have been measured to be 4.26 and 4.21eV, respectively. The incorporation of Mn element into the matrix of ZnO, as a relatively deepd onor, can remove some electrons from the conduction band and deplete the density of occupied states at the Fermi energy, which causes a loss in measured photoemission intensity and an increase in the su,rface work function. Based on the band gap and work function results, the energy band diagram of the ZnO: (Al, Mn) film near its surface is also given.
关键词:
transparent conducting oxide film
,
null
,
null
