High performance organic photovoltaic cells based on donor acceptor polymers in the active layer. A composition comprising: at least one copolymer comprising at least one first donor moiety and at least one first acceptor moiety in the copolymer backbone, wherein the first acceptor moiety comprises at least one first ring which is bivalently linked to the copolymer backbone and at least one second ring fused to the first ring and not bivalently linked to the copolymer backbone, wherein the first ring or the second ring comprises two adjacent fluoro ring substituents, and optionally, wherein the donor comprises at least one fused ring system. High efficiency, high Voc, and a combination of both can be achieved.
基于给体受体共聚物的活性层的高性能有机光伏电池。一种组合物,包括:至少一种共聚物,其中该共聚物包括至少一个第一给体基团和至少一个第一受体基团在共聚物骨架上,其中第一受体基团包括至少一个与共聚物骨架双价连接的第一环和与第一环融合而不与共聚物骨架双价连接的至少一个第二环,其中第一环或第二环包括两个相邻的
氟代环取代基,可选地,给体包括至少一个融合的环系统。可以实现高效率、高Voc和两者的组合。