分子配向とエレクトロニクス

摘要

Organic single-crystal semiconductors offer the systems of 7i-conjugated small molecules periodically arranged in a macroscopic length scale. Since molecular alignment is crucial in charge transport with minimized disordered potential, such solids are the most suited both to study fundamental physics of charge transport in the weakly interacting molecular assemblies and to fabricate the best-performing organic devices for printed and flexible electronics. The degree of fundamental intermolecular electronic charge coherence is discussed using the results of Hall effect on various single-crystal transistors under varied temperatures. It turned out that the extent of the coherence depends on molecular systems, so that such an approach gives a prescription to design new molecular compounds because fully coherent materials exhibit high carrier mobility of approximately 10 cm~2/Vs, indeed.%究極的な分子配向性を有する有機半導体単結晶のデバイス研究を中心に、高移動度のキャリア伝導を実現する機構について述べる。また、印刷法の適用が可能な溶液プロセスで10cm~2/Vs級の高移動度有機半導体が得られているので,それをベースにしたエレクトロニクス回路についても紹介する。