Visible light-absorbing complex, triazine-based dendritic polymer, and organic photovoltiac device

A visible light-absorbing complex for an organic photovoltaic device comprising an electron acceptor and an electron donor, said electron donor having a triazine-based dendritic polymer formed of a core group (C) and branch groups emanating from said core group (C), each of said branch groups being composed of terminal groups (P) and a triazine-based moiety group, said triazine-based dendritic polymer being represented by the following formula (I):

• wherein G indicates the generation number of said triazine-based dendritic polymer and is an integer greater than 0, “G-1” indicating the layer number of said branch groups, n being the number of said terminal groups and representing 2(G-1), and m being the number of said branch groups emanating from said core group and ranging from 2 to 4,
• wherein Z1 of said triazine-based moiety group is a divalent group containing O or N, and an atom of Z1 bonding to said triazine group of said triazine-based moiety group should be O or N;
• and
• wherein, when G is 1, the core group should be a triazine-based core group having at least one triazine ring, and an atom of each of said terminal groups bonding to said triazine ring of said triazine-based core group should be O or N.