Minjie research group of Wuhan University has made new progress in the development of low-cost organic solar cells.

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　　Recently, Energy & Environmental Science published online the research work of Min Jie's research group of Wuhan University Institute of Advanced Studies on simplifying the synthesis route of thieno [3,4-c] pyrrole -4,6- dione (TPD) derivatives and preparing high-performance organic solar cells (OSCs).

　　The title of this paper is "A facile synthetic approach based on thieno [3,4-c] pyrrole -4,6- dione to construct polymer donors for high-efficiency organic solar cells" (based on the simple synthesis method of thieno [3,4-c] pyrrole-4,6-dione, the polymer for high-efficiency organic solar cells was constructed. The Institute of Advanced Studies of Wuhan University is the first signatory, doctoral students Xu Linyong and Gao Yuan are the co-first authors of the paper, and Professor Min Jie is the independent correspondent of the paper.

　　With the great breakthrough in the efficiency and stability of OSCs devices in recent years, developing low-cost active layer materials to promote the commercial application of OSCs has become a key topic in this field. In view of this, simplifying the synthesis of classical receptor units to prepare cost-effective polymer donor materials is becoming a feasible strategy. Min Jie's research group expanded the synthesis method of TPD derivatives in combination with the frontier of organic chemistry, and reduced the synthesis route of this unit from 11 steps to 3 steps compared with the traditional method, which greatly reduced the synthesis cost of TPD derivatives. PTTB-F, a polymer donor material constructed in this way, can be matched with a variety of receptors, and shows good device performance, with the highest energy conversion efficiency reaching 18.06%. The research will make TPD derivatives occupy a favorable position in the process of developing low-cost and high-efficiency organic semiconductor materials.

　　This research is supported by the National Natural Science Foundation of China and the basic scientific research operating expenses of central universities. The public service platform for scientific research of Wuhan University and the open sharing platform for large-scale instruments and equipment of Wuhan University provide strong support for this research.

　　Original link: https://doi.org/10.1039/D3EE01317K

　　Source: Wuhan University