An Electron‐Deficient Building Block Based on the B←N Unit: An Electron Acceptor for All‐Polymer Solar Cells

• DOI: 10.1002/anie.201508482
• Publication Date: 2015-12-13T02:31:18Z
• Authors: Chuandong Dou; Xiaojing Long; Zicheng Ding; Zhiyuan Xie; Jun Liu; Lixiang Wang
• Keywords: HOMO/LUMO; Electron acceptor; Acceptor; Absorbance; Electron donor

Abstract A double B←N bridged bipyridyl (BNBP) is a novel electron‐deficient building block for polymer electron acceptors in all‐polymer solar cells. The bridging units endow BNBP with fixed planar configuration and low‐lying LUMO/HOMO energy levels. As result, the based on (P‐BNBP‐T) exhibits high mobility, levels, strong absorbance visible region, which desirable acceptors. Preliminary cell (all‐PSC) devices P‐BNBP‐T as acceptor PTB7 donor exhibit power conversion efficiency (PCE) of 3.38 %, among highest values all‐PSCs donor.