Design and synthesis of non-fullerene acceptors based on a quinoxalineimide moiety as the central building block for organic solar cells. Issue 34 (26th March 2020)

• Record Type: Journal Article
• Authors: Zhu, Chunguang; An, Kang; Zhong, Wenkai; Li, Zhenye; Qian, Yu; Su, Xiaozhe; Ying, Lei
• Is Part Of: Chemical communications. Volume 56:Issue 34(2020)
• Page Start: 4700
• Page End: 4703
• Publication Date: 2020-03-26
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc00896f
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The imide-functionalized quinoxaline unit allows for the incorporation of an additional solubilizing group without disturbing the planar structure of the core unit. Abstract : Two new non-fullerene acceptors, namely QIP-4F and QIP-4Cl, containing a novel imide-functionalized quinoxaline (QI) moiety fused with a thienylthiophene unit as the central building block, and fluorinated or chlorinated 2-(3-oxo-2, 3-dihydro-1 H -inden-1-ylidene)malononitrile as end-capping groups, were designed and synthesized, respectively. An optimized device based on P2F-EHp:QIP-4Cl presented a power conversion efficiency of 13.3%, with an impressively high open-circuit voltage of 0.94 V. These results demonstrate the great potential of QI-containing fused units as central building blocks for high-performance acceptors.