Synthesis of a low band gap polymer and its application in highly efficient polymer solar cells.
HOMO level of the PBDTTT-based polymer was successfully reduced by introducing an ketone group in place of the ester group. The average PCE of the PBDTTT-based devices reached 6.3% with a champion PCE result of 6.58%. Due to its highly efficient photovoltaic performance and more feasible synthesis approach, PBDTTT-C has the potential to be successfully applied in the large-scale manufacturing of polymer solar cells.
Hou
Jianhui
J
Solarmer Energy, Inc., El Monte, California 91731, USA. jianhuih@solarmer.com
Chen
Hsiang-Yu
HY
Zhang
Shaoqing
S
Chen
Ruby I
RI
Yang
Yang
Y
Wu
Yue
Y
Li
Gang
G