[18a-B6-1~10] 12.4 Organic light-emitting devices and organic transistors

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[18a-B6-7] Emergence and Control of Polar Crystal Structures in Layered Organic Semiconductors by the Effect of Molecular Mixing

〇Seita Kuroda¹, Kiyosi Nikaido¹, Kentaro Shoriki¹, Youtarou Takahashi^1,2, Satoru Inoue¹, Tatsuo Hasegawa¹ (1.U. Tokyo, 2.RIKEN CEMS)

Keywords:

Semiconductors,Organic Semiconductors

We have prepared thin film crystals of mixtures of 4F-Ph-BTBT-C10 and 3F-Ph-BTBT-C10 with fluorine substituents in equal molar ratio, and of unsubstituted Ph-BTBT-C10 in equal molar ratio. The SHG (second harmonic generation) measurements showed that the crystal structure was polarized in the in-plane and transverse directions.The SHG intensity dependence on the incident/outgoing polarization angle was plotted, and different signal patterns were observed depending on the position of fluorine substitution.