Abstract
Because of the advantages, easy fabrication process, low cost, wide viewing angle, low power consumption and high brightness, OLED has played an important role in display technology. Since the multilayer construction of OLED, we focus on the organic thin film research. In this thesis, we successfully investigate the organic materials growing on Si(111)-7×7 surface with scanning tunneling microscopy, low energy electron diffraction and Auger election in Institute of Physics in Academia Sinica. Besides, we use ultraviolet photoemission spectroscopy to measure the unoccupied states of the materials. Therefore, we discuss the growing of the materials. A series of researches on hole transport material NPB have been studied, and we found that it can form some special arrays.
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