Alternative acceptor materials based on hexabenzocoronene grafted with polymeric electron donor
Résumé
An electron acceptor, esp. for an org. solar cell, is a hexabenzocoronene compd., of structure I, in which: (1) R1, R3, R4, and R6 are selected from a carboxyl group -C(:O)-OH, -CN, -isocyano -(N+≡C-), -O(C≡N), and -CF3; and (2) R2 and R5 are of formula -Xn-ZP46, in which X is a spacer selected from -C(:O)-O- and -C(:O)-NH-, n = 0 or 1, and ZP46 is a polymer of structure II. The invention is applicable in particular in the field of org. photovoltaic cells.