화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.65, 195-204, September, 2018
DOI10.1016/j.jiec.2018.04.029  Export Citation
Significant impact of monomer curvatures for polymer curved shape composition on backbone orientation and solar cell performances
Tae Ho Lee, Doo Hun Kim, Eui Jin Lee, and Doo Kyung Moon†
  • Department of Material Chemistry and Engineering, Konkuk University, Seoul, 143-701, Republic of Korea
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In the present study, linear or curve-shaped donor units, quinacridone (Qc) and benzo[2,1-b:3,4-b0] dithiophene (BDP), and spacers were introduced for polymerization of four D-A type polymers (PBDPOxbiT, PBDPOx-TT, PQcOx-biT, and PQcOx-TT). The UV-vis absorption spectra of PBDPOx-biT, PQcOx-TT (linear shaped polymer) films were redshifted compared with the solution absorption, whereas that of a PBDPOx-TT, PQcOx-biT (curve shaped polymer) film was blue-shifted. PBDPOx-biT, PQcOx-TT had high crystallinity. Linear polymers prefer regular and crystalline domains in the film state and lead to more efficient organic photovoltaic (OPV) devices. PQcOx-TT possesses a PCE value of up to 3.4%.
Keywords:Organic photovoltaics (OPVs);Quinacridone (Qc);Benzo [2,1-b:3,4-b'] dithiophene (BDP);π spacer;Density functional theory (DFT);Shape curvature
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