有機半導体単結晶の価電子バンドの実測

抄録

Electronic structures of π-conjugated organic semiconducting materials are fundamental factors for functionalities that organic electronic devices exhibit. Single crystals, which have less defects or impurities, are favorable benchmark samples to access the intrinsic properties of each material itself. Beside lively studies about the electric characteristics on the organic single crystals, electronic investigations are far limited mainly because of a technical problem of sample charging. In the present article, we introduce sample charging-durable methodologies, which allow us to demonstrate the valence band of organic single crystals, and a couple of works on rubrene and pentacene single crystals as examples.