题目：

Ternary D1�D2�A�D2 Structured Conjugated Polymer: Efficient “Green” Solvent-Processed Polymer/Neat-C₇₀ Solar Cells

作者：

Jianyu Yuan,*^1,2 Caitlin McDowell, ² Cheng-Kang Mai,² Guillermo C. Bazan*² and Wanli Ma*¹

单位：

1.   Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China

2.   Center for Polymers and Organic Solids, Departments of Chemistry & Biochemistry, University of California, Santa Barbara, California, CA 93106 , United States

摘要：

In contrast to the great efforts on developing novel donor (D)−acceptor (A) copolymers, research on investigating the backbone composition of conjugated polymer is rare. In this contribution, we disclose the design and synthesis of a ternary D1−D2−A−D2 structured conjugated polymer PBSF. Compared to the typical D−A polymer with fixed D/A moiety number, the ternary structure can tune the optical and electrical properties more comprehensively and delicately. Precisely control of the ternary fragments relative to the backbone vector was achieved, further promoting sufficient planar structure, strong intermolecular packing, and excellent charge transport. Finally, the additive and annealing-free polymer solar cells based on PBSF and phenyl-C₇₁-butyric acid methyl ester ([70]PCBM; PCE = 7.4%) or cheap, nonfunctionalized C₇₀ (PCE = 5.3%) demonstrate excellent performance using either chlorinated or nonhalogenated “green” solvent. We believe that this novel and efficient ternary structure may spark future polymer design to achieve sustainable-processed photovoltaic devices for practical mass production.

影响因子：

9.407

分区情况：

一区

链接：

http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b03189

（责任编辑：向丹婷 联系方式：dtxiang@suda.edu.cn）