NOVELTY - A visible light-absorbing complex comprises an electron acceptor and an electron donor, where the electron donor has a triazine-based dendritic polymer formed of a core group and branch groups emanating from the core group, each of the branch groups is composed of terminal groups and a triazine-based moiety group.    USE - A visible light-absorbing complex for organic photovoltaic device (claimed).    ADVANTAGE - The complex exhibits absorption at a relatively wide range of visible wavelength.    DETAILED DESCRIPTION - A visible light-absorbing complex comprises an electron acceptor and an electron donor, where the electron donor has a triazine-based dendritic polymer formed of a core group and branch groups emanating from the core group, each of the branch groups is composed of terminal groups and a triazine-based moiety group. The triazine-based dendritic polymer is of formula (I).    G= not less than 0;    Z1=divalent group containing O or N (preferably -N(R7)-Y2-N(R8)-);    R7,R8=H or 1-10C alkyl;    Y2=1-10C alkylenyl, 1,4-cyclohexylenyl, 1,3-cyclohexylenyl, m-phenylenyl or p-phenylenyl; and    m=2-4.    With the proviso that:    (1) when G is 1, the core group should be triazine-based core group having triazine ring(s) and an atom of each of the terminal groups bonding to the triazine ring of the triazine-based core group is O or N;    (2) when m is 2, the triazine-based core group is of formula (a); and    (3) when m is 4, the triazine-based core group is of formula (b).    X=halo, 1-20C alkyl, 1-20C aromatic hydrocarbon, ORo, -N(R1)-Y1-NH(R2), or substituted piperidinyl of formula (c);    Z2=divalent group containing O or N;    Ro=1-20 alkyl or 1-20C aromatic hydrocarbon;    R1,R2=H or 1-10C alkyl;    Y1=1,4-cyclohexylenyl, 1,3-cyclohexylenyl, m-phenylenyl, p-phenylenyl or 1-10C alkylenyl;    M=NH, O, S, CH2, N-R', or CH-R";    R3-R6=H or Me;    R'=1-20C alkyl, 1-20C aromatic hydrocarbon, -C(=Q1)-r1, or -C(=Q2)-NH-r2;    R"=OH, Or3, -O-C(=Q3)-r4, or -O-C(=Q4)-NH-r5;    Q1-Q4=O or S; and    r1-r5=1-20C alkyl, or 1-20C aromatic hydrocarbon.