控制印氧化的工作功能:区分二极管与局部表面效应
Eric L Bruner1, Norbert Koch, Amelia R Span
1Department of Chemistry, Princeton University, Princeton, New Jersey 08544-1009, USA.
Journal of the American Chemical Society
|March 28, 2002
概括
使用醇进行氧化 (ITO) 表面修饰改变了其工作功能. 这种变化与的分子二极极时刻相关,而不是它的酸度,这表明一种静电相互作用模型.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 纳米技术 纳米技术
背景情况:
- 氧化 (ITO) 是一种重要的透明导电材料.
- ITO的表面功能化对于调整其电子性能至关重要.
- 了解表面反应是开发基于ITO的先进设备的关键.
研究的目的:
- 研究ITO与有机素化合物和替代的反应.
- 分析由此产生的表面物种及其对ITO工作功能的影响.
- 为了阐明控制ITO表面修饰由的机制.
主要方法:
- 在ITO.上形成表面结的氧物种形成.
- 配体交换反应与替代的.
- 超高真空X射线光电子光谱 (XPS) 用于物种分析.
- 修改的ITO表面的工作功能测量.
主要成果:
- 在ITO上成功合成了与表面结合的alkoxytin物种.
- 证明了与替代的醇进行连接物交换.
- 观察到分子二极极 Moment 和 ITO 工作功能的变化之间存在强烈的相关性.
- 酸度与ITO工作功能的变化之间没有相关性.
结论:
- ITO由醇的工作功能修改是由静电模型控制的.
- 的分子二极极矩是主要因素,而不是酸度.
- 结果支持用于ITO表面功能化的静电相互作用机制.
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