Disilanobithiophene-dithienylbenzothiadiazole alternating polymer as donor material of bulk heterojunction polymer solar cells

作者：Nakashima Makoto; Murata Noriyasu; Suenaga Yu; Naito Hiroyoshi^*; Sasaki Takuya; Kunugi Yoshihito^*; Ohshita Joji^*

来源：Synthetic Metals, 2016, 215: 116-120.

DOI：10.1016/j.synthmet.2016.02.012

• Bulk heterojunction polymer solar cell
• Organosilicon polymer
• Disilanobithiophene
• Donor-acceptor polymer

A donor-acceptor conjugated polymer composed of disilanobithiophene and dithienylbenzothiadiazole (pDSBT-BHTBT) was prepared and used as donor material of bulk heterojunction polymer solar cell with PC71BM as acceptor compound. We report herein the optimization of cell fabrication parameters, namely, the pDSBT-BHTBT:PC71BM ratio and the active layer film thickness, and the improvement of cell power conversion efficiency from 2.54% to 3.76%. Measurements of hole and electron mobilities of pDSBT-BHTBT:PC71BM films revealed relatively low electron mobility. Thin film transistors with a pDSBT-BHTBT film were also fabricated and p-type semiconducting properties were explored.

• 出版日期2016-5