[10a-W810-1~10] 12.2 Characterization and Materials Physics

[10a-W810-9] Nuclear Tunneling Effect of Carrier Transport in Organic Semiconductor
and Their Origin of Negative Temperature Dependence of Carrier Mobility

〇Akira Ohno¹, Yukiko Takayashiki¹, Takeo Nitta¹, Jun-ichi Hanna¹, Hiroaki Iino¹ (1.Tokyo Inst. of Tech.)

Keywords:organic semiconductor, Markus equation, carrier transport

The mechanism of charge transport in organic semiconductors exhibiting smectic E phase was investigated. In this study, we apply the quantum CT rate proposed by Lin et al with nuclear tunneling effects in our organic semiconductors. The model can explain the negative temperature dependence of mobility without using band-like model. Using the same model for different phase, we can understand why the charge transport of organic semiconductor in SmE phase of liquid crystal causes different behavior of charge transport with lower mobility than that in crystal.