Improving the ordering and photovoltaic properties by extending π-conjugated area of electron-donating units in polymers with D-A structure.
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 PC(70) BM show a power conversion efficiency (PCE) of 7.81%, which is 25% higher than that of the parent PBDTTT-S.
State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Ye
Y
Huang
Xia
X
Guo
Feng
F
Liu
Lijun
L
Huo
Yuning
Y
Chen
Thomas P
TP
Russell
Charles C
CC
Han
Yongfang
Y
Li
Jianhui
J
Hou
D011211:Electric Power Supplies; D004583:Electrons; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory; D012993:Solar Energy
D011108:Polymers