[16p-E502-1~9] 12.4 Organic light-emitting devices and organic transistors

△ [16p-E502-1] Modulation of Charge Carrier Transport Properties based on Precise and Systematic Arrangement Control of Organic Semiconductor BTBT

〇(M2)Ryota Akai¹, Kouki Oka¹, Norimitsu Tohnai¹ (1.Grad. Sch. Eng.)

Keywords:organic salt, molecular arrangement, charge carrier mobility

The charge carrier mobility of organic semiconductors heavily depends on the overlap of π-conjugation between neighboring molecules. In the current work, organic salts composed of disulfonic acid with [1]benzothieno[3,2-b][1]benzothiophene (BTBT) and alkylamines were prepared. Based on the bulkiness of combined alkylamines, we precisely controlled only BTBT’s arrangement without any chemical modifications. Flash-photolysis time-resolved microwave conductivity and quantum chemical calculations elucidated the effect of the subtle difference of the overlap of π-conjugation on charge carrier mobility.