Low band-gap weak donor–strong acceptor conjugated polymer for organic solar cell. Issue 120 (19th November 2015)

• Record Type: Journal Article
• Authors: Shi, Zugui; Hoi Ka, Ivy Wong; Wang, Xizu; Vijila, Chellappan; Wang, Fei; Li, Gongqiang; Tjiu, Weng Weei; Li, Jun; Xu, Jianwei
• Is Part Of: RSC advances. Volume 5:Issue 120(2015)
• Page Start: 98876
• Page End: 98879
• Publication Date: 2015-11-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra19715e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : With an additional weak acceptor, the low band-gap donor–acceptor conjugated polymer displayed a remarkable power conversion efficiency of 5.36%. Abstract : By insertion of an additional weak acceptor into a donor–acceptor conjugated polymer backbone, a new weak donor–strong acceptor alternating copolymerPTTBOBT-DFBT was synthesized and it showed a low band-gap of 1.64 eV with a deep HOMO energy level (−5.44 eV). The bulk heterojunction (BHJ) solar cell fabricated from polymerPTTBOBT-DFBT displayed a remarkable power conversion efficiency (PCE) of 5.36% ( J sc = 11.04 mA cm −2, FF = 63.65%, V oc = 0.76 V).