Regioisomer effects of [70]fullerene mono-adduct acceptors in bulk heterojunction polymer solar cells.

Autor: Umeyama T; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp., Miyata T; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp., Jakowetz AC; Cavendish Laboratory , University of Cambridge , J J Thomson Avenue , Cambridge , CB3 0HE , UK . Email: rhf10@cam.ac.uk., Shibata S; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp., Kurotobi K; Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan., Higashino T; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp., Koganezawa T; Japan Synchrotron Radiation Research Institute , 1-1-1, Kouto, Sayo-cho, Sayo-gun , Hyogo 679-5198 , Japan., Tsujimoto M; Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan., Gélinas S; Cavendish Laboratory , University of Cambridge , J J Thomson Avenue , Cambridge , CB3 0HE , UK . Email: rhf10@cam.ac.uk., Matsuda W; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp., Seki S; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp., Friend RH; Cavendish Laboratory , University of Cambridge , J J Thomson Avenue , Cambridge , CB3 0HE , UK . Email: rhf10@cam.ac.uk., Imahori H; Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto , 615-8510 , Japan . Email: imahori@scl.kyoto-u.ac.jp.; Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan.
Jazyk: angličtina
Zdroj: Chemical science [Chem Sci] 2017 Jan 01; Vol. 8 (1), pp. 181-188. Date of Electronic Publication: 2016 Aug 19.
DOI: 10.1039/c6sc02950g
Abstrakt: Despite numerous organic semiconductors being developed during the past decade, C 70 derivatives are predominantly used as electron acceptors in efficient polymer solar cells (PSCs). However, as-prepared C 70 mono-adducts intrinsically comprise regioisomers that would mask individual device performances depending on the substituent position on C 70 . Herein, we separate the regioisomers of C 70 mono-adducts for PSC applications for the first time. Systematic investigations of the substituent position effect using a novel symmetric C 70 mono-adduct ([70]NCMA) and a prevalent, high-performance one ([70]PCBM) reveals that we can control the structures of the blend films with conjugated polymers and thereby improve the PSC performances by regioisomer separation. Our approach demonstrates the significance of exploring the best-matching regioisomer of C 70 mono-adducts with high-performance conjugated polymers, which would achieve a remarkable progress in PSC devices.
Databáze: MEDLINE
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