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(6) “Donor-Acceptor Alternating Copolymer Nanowires for Highly Efficient Organic Solar Cells”

by Jaewon Lee†, Sae Byeok Jo†, Min Kim, Heung Gyu Kim, Jisoo Shin, Haena Kim, and Kilwon Cho*
Advanced Materials, 2014, 26, 6706
Published Online on 30 JUL 2014
DOI: 10.1002/adma.201401203 (Article) DOI: 10.1002/adma.201470265 (Cover Feature)
(†Equally contributed) Role: Experimental Design, Device and Morphology Characterization, Data Analysis and Paper Writing
Featured as an Inside Front Cover Article (related news articles)

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.

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