[20a-231C-1~5] Frontier of organic semiconductor crystals: Toward the Molecular Science of Quantum Liberated Electrons

[20a-231C-5] Organic single crystal growth by flux evaporation method and its application

〇Toshihiro Shimada¹, Nobuhiko Sakai², Mingzhe Li², Xiaoran Yang², Taro Nagahama¹, Takashi Yanase¹ (1.Hokkaido Univ., 2.CSE Hokkaido Univ.)

Keywords:organic semiconductors, single crystal, flux evaporation method

We have developed a new technique for the crystal growth of organic semiconductors. An aromatic compound that are solid at room temperature and the organic semiconductor are vacuum-sealed in a tube. By elevating temperature, a highly concentrated solution is obtained. Crystallization of the organic semiconductor is promoted by temperature gradient and decreasing temperature. We have obtained cm-sized crystals of pentacene. Some applications using these large crystals are presented, including evaluation of mechanical properties.