Synthesis and Photovoltaic Properties of a Copolymer based on thieno [2, 3-f] benzofuran and thienopyrroledione

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Gao, Yueyue^1,2 ; Yang, Yulin^2 ; Zhang, Yong^1

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China^1

School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China^2

关键词: Bulk heterojunction solar cells;    Donor acceptors;    Donor materials;    High efficient;    Narrow band gap;    Photovoltaic property;    Power conversion efficiencies;    Two Dimensional (2 D);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012161/pdf
DOI  :  10.1088/1757-899X/274/1/012161

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A novel donor-acceptor type conjugated polymer PTBFTPD based on two-dimensional (2D) conjugated alkylthienyl substituted thieno[2,3-f]benzofuran (TBF) and thienopyrroledione (TPD) unit, was synthesized and applied as donor material for bulk heterojunction solar cells. The novol polymer possesses a narrow bandgap of 1.83 eV, a deep HOMO energy level (-5.64 eV) and a closer π-π stacking. After conventional devices were fabricated using PTBFTPD as donor blending with PC70BM as acceptor, a power conversion efficiency (PCE) of 4.33% with a high open circuit voltage (Voc) of 1.09 V was obtained. The result indicates the promising potential of thieno [2, 3-f] benzofuran unit for high efficient polymer solar cells with a high voltage.