NOVEL COPOLYMER, ORGANIC SEMICONDUCTOR MATERIAL, AND ORGANIC ELECTRONIC DEVICE, PHOTOELECTRIC CONVERSION ELEMENT AND SOLAR CELL MODULE USING THE ORGANIC SEMICONDUCTOR MATERIAL

• Main Authors: AKIYAMA SEIJI, FUJITA RIEKO, TODA ATSUSHI, OKABE MISAKO, OTA ICHIJI
• Format: Patent
• Language: English; Japanese
• Published: 14.05.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a novel copolymer which is highly soluble, has absorption in a long wavelength region, and is suitable for a photoelectric conversion element.SOLUTION: The copolymer has a repeating unit represented by formula (1) and has a weight-average molecular weight in terms of polystyrene of 2×10-1×10. (Ris a substituted/unsubstituted alkyl group, a substituted/unsubstituted alkenyl group, or a substituted/unsubstituted aryl group, and R-Rare each independently H, a halogen atom, a substituted/unsubstituted alkyl group, a substituted/unsubstituted alkenyl group, or a substituted/unsubstituted aryl group) 【課題】溶解度が高く、長波長領域に吸収を有する、光電変換素子に適した新規のコポリマーを提供する。【解決手段】式（１）で表される繰り返し単位を有するコポリマーであって、ポリスチレン換算の重量平均分子量が２?１０４〜１?１０７であるコポリマー。（Ｒ１は置換／未置換のアルキル基、アルケニル基又はアリール基；Ｒ２〜Ｒ５は各々独立にＨ、ハロゲン原子、置換／未置換のアルキル基、アルケニル基又はアリール基）【選択図】なし