NOVELTY - Organic photovoltaic cell material (M1) comprising substituted polythiophene compounds (I), substituted 2,8-dimethyl-6,12-dihydro-6,12-diaza-indeno(1,2-b)fluorene compounds (II), substituted 5,11-dimethyl-1,3-dihydroindolo(2,3-b)carbazole compounds (III), substituted 2,9-dimethyl-11,12-dihydroindolo(2,3-a)carbazole compounds (IV) or substituted 3,6-dimethylpyrrolo(3,4-c)pyrrole-1,4(2H,5H)-dione compounds (V), is new.    USE - (M1) is useful in an electron-donor layer of an organic photovoltaic cell component (claimed).    ADVANTAGE - (M1): provides organic photovoltaic cell component with high optical conversion efficiency and simple preparation process; and has high photon-to-electron conversion efficiency, the simple structure and the reduced cost by virtue of the high yields.    DETAILED DESCRIPTION - Organic photovoltaic cell material (M1) comprising substituted polythiophene compounds of formula (I), substituted 2,8-dimethyl-6,12-dihydro-6,12-diaza-indeno(1,2-b)fluorene compounds of formula (II), substituted 5,11-dimethyl-1,3-dihydroindolo(2,3-b)carbazole compounds of formula (III), substituted 2,9-dimethyl-11,12-dihydroindolo(2,3-a)carbazole compounds of formula (IV) or substituted 3,6-dimethylpyrrolo(3,4-c)pyrrole-1,4(2H,5H)-dione compounds of formula (V), is new.    n = natural number, preferably 1-4;    X1 = substituted thieno(3,2-b)thiophene-2,5-diyl of formula (b1);    m = 1-3;    A1 = thienyl, phenyl, pyridyl (all optionally substituted with 1-18C alkyl in any position), H, F, Cl or 1-18C alkyl; and    R1 = phenyl (optionally substituted with 1-18C alkyl in any position) or 1-18C alkyl.    An INDEPENDENT CLAIM is also included for an organic photovoltaic cell component, comprising an electron-donor layer, at least one electron-acceptor layer and an electron transport layer or an hole/exciton barrier layer which are attached to a substrate by the thermal evaporation or the spin coating in turn and which are arranged between an anode and a cathode, where the electron-donor layer contains the organic photovoltaic cell material.