Improving the Ordering and Photovoltaic Properties by Extending π-Conjugated Area of Electron-Donating Units in Polymers with D-A Structure
作者:Ye Huang、Xia Guo、Feng Liu、Lijun Huo、Yuning Chen、Thomas P. Russell、Charles C. Han、Yongfang Li、Jianhui Hou
DOI:10.1002/adma.201200995
日期:2012.7.3
A systematic molecular design process from PBDTTT‐S to PBDTDTTT‐S‐T, a high‐performance semiconducting polymer for organic photovoltaics, has been achieved by enhancing structural order, self‐assembly and carrier mobility. Solar cells made from PBDTDTTT‐S‐T blended with PC70BM show a power conversion efficiency (PCE) of 7.81%, which is 25% higher than that of the parent PBDTTT‐S.