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近几年,苯并[1,2-b:4,5-b’]二呋喃(benzo[1,2-b:4,5-b’]difuran,BDF)由于其平面性好、电荷迁移率高、溶解性好、生产来源丰富、可生物降解等优点,得到了越来越多的关注,并被广泛应用于有机光伏分子的设计中.目前所报道的基于该共轭单元的有机光伏器件(OPV)的光电转化效率(PCE)最高已达到了9.43%,展示了巨大的应用前景.系统地介绍了BDF共轭单元的制备路线及基于BDF单元的光伏材料的最新研究进展,重点讨论了基于BDF单元给体材料结构的变化对光伏性能的影响.
In recent years, benzo [1,2-b: 4,5-b ’] difuran (BDF) due to its good planarity, charge transfer High-rate, good solubility, rich source of production, biodegradability, etc., have attracted more and more attention and are widely used in the design of organic photovoltaic molecules.Recently reported based on the conjugated units of organic photovoltaic The photoelectric conversion efficiency (PCE) of device (OPV) has reached the maximum of 9.43%, which shows a great application prospect. The preparation route of BDF conjugate unit and the latest research progress of BDF unit-based photovoltaic materials are systematically introduced, focusing on Based on BDF unit donor material structure changes on the photovoltaic performance.