Jo, Jea Woong Kim, Yujeong Ko, Min Jae Son, Hae Jung 2024-01-20T03:32:38Z 2024-01-20T03:32:38Z 2021-09-05 2016-09 0143-7208 https://pubs.kist.re.kr/handle/201004/123741 Because large amounts of solvents are needed for large-scale fabrication of organic solar cells, it is important to develop solar cell processes using environmentally friendly solvents. In the research, we introduce a new approach to control the morphology of polymer:PC71BM blend films by an additive-free and non-halogenated solvent system. Incorporation of a fullerene-compatible o-dichlorobenzene group as the side chain of polythienothiophene-co-benzodithiophene derivatives importantly enhances the compatibility of the polymer with PC71BM and improves the nano-scale morphology of the blend film processed from o-xylene. We studied the effect of introducing the o-dichlorobenzene group onto the polymer on the morphology, charge mobility, and solar cell performances as comparing the cases of the polymer before modification. The developed polymer:PC71BM-based solar cells prepared using o-xylene show a remarkably improved performance with a PCE of 6.07%. (C) 2016 Published by Elsevier Ltd. English ELSEVIER SCI LTD POWER CONVERSION EFFICIENCY NON-CHLORINATED SOLVENTS ADDITIVE-FREE CONJUGATED POLYMERS MOLECULAR DESIGN PHOTOVOLTAIC CELLS HETEROJUNCTION COPOLYMER NANOMORPHOLOGY ELECTRODES Development of intrinsically fullerene-compatible polymers: Strategy for developing high performance organic solar cells using a non-halogenated solvent Article 10.1016/j.dyepig.2016.04.008 1 DYES AND PIGMENTS, v.132, pp.103 - 109 DYES AND PIGMENTS 132 103 109 scie scopus 000378456200012 2-s2.0-84966335557 Chemistry, Applied Engineering, Chemical Materials Science, Textiles Chemistry Engineering Materials Science Article POWER CONVERSION EFFICIENCY NON-CHLORINATED SOLVENTS ADDITIVE-FREE CONJUGATED POLYMERS MOLECULAR DESIGN PHOTOVOLTAIC CELLS HETEROJUNCTION COPOLYMER NANOMORPHOLOGY ELECTRODES Organic photovoltaic Conjugated polymer Compatibility Non-halogenated solvent Morphology