LIGHT EMITTING DEVICES INVESTIGATED BY CONDUCTIVE AFM

利用扫描探针显微镜和激光激发相结合的方法对单分子进行了电学测量。利用导电原子力显微镜和扫描隧道显微镜技术，可以实现Au(111)表面单分子自组装单分子膜隧道导电的定量分析和分子分辨率的电导成像。此外，还发展了与激光激发相结合的新型扫描探针显微镜，如光导原子力显微镜和激光辅助扫描隧道显微镜，用于研究有机薄膜光电性质的局域探针分析。这些新技术已被证明是研究有机薄膜电学和光学性质的局域表征的有效方法。

The electrical measurements on a single molecule using the scanning probe microscopes combined with laser excitation were investigated. The techniques using the conductive atomic force microscope and the scanning tunneling microscope could realize the quantitative analysis on the tunnel conduction through a single molecule of self assembled monolayer fabricated on Au(111) as well as the conductive imaging with a molecular resolution. Additionally, the new scanning probe microscopes combined with the laser excitation like the photoconductive atomic force microscope and the laser assisted scanning tunneling microscope were developed to investigate the local probe analysis of the photoelectrical properties on the organic thin films. These new techniques have proven to be valid for studying the local characterization for the electrical and optical properties of organic thin films.