[17a-M_123-1~12] 12.4 Organic light-emitting devices, organic transistors, and flexible devices

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[17a-M_123-5] Effects of Intramolecular Vibrations on Electron and Hole Transport of Organic Semiconductors

〇Hiroyuki Ishii^1,2, Yuna Ohashi³, Nobuhiko Kobayashi^1,2, Hiroyuki Yoshida^4,5 (1.Tsukuba Univ., 2.OIQSST Tsukuba Univ., 3.CES Tsukuba Univ, 4.GSE Chiba Univ., 5.MCRC Chiba Univ.)

Keywords:

organic semiconductors,polaron,dynamic disorder

For practical applications of organic semiconductors, higher electron mobility comparable to that of holes is required, but electron mobility is an order of magnitude lower than that of holes. To clarify the microscopic origin, we systematically investigated several p-type and n-type organic semiconductors using our original approach "time-dependent wave packet diffusion method," which can take into account electron-molecular vibration interactions. As the result, we found that low-frequency intramolecular vibrational modes affect the difference in hole and electron mobility. In this lecture, we will discuss the results and analysis using a quantum well model.