On the morning of December 27, 2021, Professor Sun Yanming was invited by Professor Huang Hui from the School of Materials Science and Optoelectronic Technology to give a lecture on the theme of "High-Performance Organic Solar Cell Research" at Jiao 1-115.
Prof. Yanming Sun first introduced the research status of organic solar cells, and pointed out that the construction of nanoscale interpenetrating network bulk heterostructures is the key to the preparation of high-efficiency organic solar cells, and it is very challenging to construct an ideal bulk heterostructure. Then Mr. Sun described a new strategy, namely "fiber network strategy" to regulate phase separation, that is to use the fibrous structure of polymer donors to build a morphological framework and form a hole transport network. , large area and semi-transparent devices also have important applications. Finally, a recent work of his research group is introduced. Using the traditional branched side chain substitution strategy, the molecular packing of non-fullerene acceptor molecules has been optimized, and the morphology of multi-scale blended films has been constructed. An organic solar cell with a device efficiency of up to 18.32%, a voltage loss of 0.55 V and a fill factor of 81.5%.
Sun Yanming, School of Chemistry, Beihang University, professor and doctoral supervisor. In 2002, he graduated from the School of Chemistry, Shandong University. In 2007, he received his Ph.D. in physical chemistry from the Institute of Chemistry, Chinese Academy of Sciences. After that, he did postdoctoral research at the University of Manchester in the United Kingdom and the University of California, Santa Barbara in the United States. In September 2013, he returned to Beijing University of Aeronautics and Astronautics to work full-time. In 2018, it was approved by the National Science Fund for Distinguished Young Scholars. In 2019, he was selected as a Clarivate Analytics Global Highly Cited Scientist. He has been engaged in the research of organic optoelectronic functional materials and devices for a long time, and proposed a new strategy for regulating the phase separation of the active layer of organic solar cells by fiber network. Published more than 120 SCI papers in Nat. Mater., Nat. Commun., J. Am. Chem. Soc., Angew. Chem. Int. Ed., Adv. Mater. and other journals. His papers have been cited more than 13,000 times by Nature, Science and other journals, and many papers have been cited more than 1,000 times; in 2017 and 2018, he organized special issues on Macromol. Rapid Comm. and J. Energy Chem. as a guest editor respectively.