[16a-302-1~11] 12.4 Organic light-emitting devices and organic transistors

△ [16a-302-6] Tunneling Transport and Origin of Large Access Resistance in Single-Crystalline Thin Film Transistors of Layered Organic Semiconductor Ph-BTBT-C10

〇Takamasa Hamai¹, Shunto Arai¹, Hiromi Minemawari², Satoru Inoue^2,3, Tatsuo Hasegawa^1,2 (1.U. Tokyo, 2.AIST-FLEC, 3.Nippon Kayaku)

Keywords:organic semiconductor, single-crystalline thin film, band like transport

Asymmetrically substituted BTBT derivative Ph-BTBT-C10 is an expected organic semiconductor material which shows high mobility even in poly-crystalline thin films. We revealed that the substituted alkyl chain which enhances layered-crystallinity and semiconductor performance causes large access resistance due to its insulating nature. Four-probe measurement under low temperature clarified that band-like transport in conduction layer and tunneling transport in vertical transport are dominant in Ph-BTBT-C10 single-crystalline thin films.