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Jin Kuen Park, Jang Jo, Jung Hwa Seo, Ji Sun Moon, Yeong Don Park, Kwanghee Lee, Alan J. Heeger and Guillermo C. Bazan End-Capping Effect of a Narrow Bandgap Conjugated Polymer on Bulk Heterojunction Solar Cells Advanced Materials 23

Version of Record online: 20 APR 2011 | DOI: 10.1002/adma.201004629

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Device performances of BHJ solar cells based on poly[(4,4-didodecyldithieno[3,2-b:2’,3’-d]silole)-2,6-diyl-alt-(2,1,3-benzoxadiazole)-4,7-diyl]and PC71BM improve by capping the chain ends with thiophene fragments. This structural modification yields materials that are more thermally robust and that can be used in devices with thicker films – important considerations for enabling the mass production of plastic solar cells.

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