화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.28, No.2, 179-183, February, 2020
DOI10.1007/s13233-020-8079-z  Export Citation
A New Benzodithiophene Based Donor-Acceptor π-Conjugated Polymer for Organic Solar Cells
Saripally Sudhaker Reddy, Um Kanta Aryal, Hyunjung Jin, Thavamani Gokulnath, Durga Gayathri Rajalapati, Kakaraparthi Kranthiraja, Sung Tae Shin1, and Sung-Ho Jin†
  • Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials, Pusan National University, Busandaehakro 63-2, Busan 46241, Korea
  • 1Department of Applied Physics, Korea University, 2511, Sejong-ro, Sejong 30019, Korea
E-mail:
A new benzodithiophene based donor-acceptor π-conjugated polymer (P1) is designed and explored as the photoactive donor for organic solar cells (OSCs). The synthesized donor polymer, P1 displays a wide absorption profile ranging from 300?750 nm with optical band gap of 1.61 eV and moderate ionization potential of ?5.30 eV. It has good solubility in non-halogenated and halogenated organic solvents. Next, we fabricated OSCs with P1 by blending with PC71BM, the pristine polymer processed from chlorobenzene showed PCE of 2.79%. Upon addition of external additive diphenyl ether to the blend showed a dramatic improvement in PCE with maximum of 5.33%. DPE tailored the active layer morphology and showed two times higher PCE than pristine films. These results clearly indicate that the new polymer has a great potentiality for enhancing efficiency upon solvent additives, which will provide new routes for the development of new class of polymers for high-performance air-stable OSCs.
Keywords:benzodithiophene based π-conjugated polymer;octyl side chain;organic solar cell;morphology
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