Benzo[1,2-b:4,5-b']dithiophene-dioxopyrrolothiophen copolymers for high performance solar cells.
New donor/acceptor polymers PBDTDPT1 and PBDTDPT2 with alternating benzodithiophene and N-alkylated dioxopyrrolo-thiophene were synthesized. The new polymers had deep HOMO levels of -5.42 and -5.44 eV for PBDTDPT1 and PBDTDPT2, respectively. A PBDTDPT2 based BHJ solar cell device achieved a PCE of 4.79% and V(oc) of 0.91 V.
Zhang
Guobing
G
Department of Polymer Science and Engineering, School of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
Fu
Yingying
Y
Zhang
Qing
Q
Xie
Zhiyuan
Z