title: Donor-acceptor alternating copolymer nanowires for highly efficient organic solar cells.
abstract: A donor-acceptor conjugated copolymer enables the formation of nanowire systems that can be successfully introduced into bulk-heterojunction organic solar cells. A simple binary solvent mixture that makes polarity control possible allows kinetic control over the self-assembly of the crystalline polymer into a nanowire structure during the film-forming process. The enhanced photoconductivity of the nanowire-embedded photoactive layer efficiently facilitates photon harvesting in the solar cells. The resultant maximum power conversion efficiency is 8.2% in a conventional single-cell structure, revealing a 60% higher performance than in devices without nanowires.
authors: Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea.
authors: Jaewon
authors: J
authors: Lee
authors: Sae Byeok
authors: SB
authors: Jo
authors: Min
authors: M
authors: Kim
authors: Heung Gyu
authors: HG
authors: Kim
authors: Jisoo
authors: J
authors: Shin
authors: Haena
authors: H
authors: Kim
authors: Kilwon
authors: K
authors: Cho
keywords: nanowires; polymer materials; self-assembly; solar cells