[13p-PB9-1~49] 12.5 Organic solar cells

[13p-PB9-48] Modulation of Orientation of Fluorinated Benzothienoisoindigo Copolymers

〇Marina Ide¹, Akinori Saeki¹ (1.Osaka Univ.)

Keywords:Organic solar cell,Two dimensional X-ray diffraction,Fluorinated copolymer

New fluorinated benzothienoisoindigo (F-BTIDG) unit for organic solar cells (OPV) was designed and coupled with benzobisthiazole (BBTz) and terthiophene (3Th). The bandgaps of F-BTIDG copolymers were from 1.36 to 1.46 eV, which as well as their HOMOs are suitable as p-type materials for n-type fullerene derivatives. The orientation of 3Th-F-BTIDG was dramatically changed from face-on to edge-on by introducing fluorine.