화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.26, 173-181, June, 2015
DOI10.1016/j.jiec.2014.10.045  Export Citation
A facile method for enhancing photovoltaic performance of low-band-gap D?A conjugated polymer for OPVs by controlling the chemical structure
Min Hee Choi, Kwan Wook Song, Soo Won Heo, Yong Woon Han, and Doo Kyung Moon†
  • Department of Materials Chemistry and Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea
E-mail:
Stille coupling polymerization has been used to synthesize a series of new crystalline conjugated polymers with low-lying HOMO level: PABToBT, PPDToBT, PQTDPT. All of these polymers exhibited sufficient energy offsets with respect to those of fullerenes to allow efficient charge transfer and low-lying highest occupied molecular orbital (HOMO), from -5.04 to -5.27 eV. As a result, the photovoltaic device comprising a PPDToBT/PC71BM (1:4) blend system exhibited excellent performance, under AM1.5 G irradiation, with a VOC of 0.878 V, a JSC of 8.7 mA cm-2, a FF of 0.51, and a promising PCE of 3.9%.
Keywords:Thiophene;Thienothiophene;Benzothiadiazole;Stille coupling reaction;Bulk heterojunction polymer solar cells
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