NOVELTY - Aromatic amine compounds (I) are new.    USE - (I) are useful in organic material layer of organic solar cell (claimed).    ADVANTAGE - (I) exhibits excellent thermal stability and electronic stability, deep highest occupied molecular orbital level, variety of band gaps, variety of lowest unoccupied molecular orbital level states, can be used in pure stare or by mixing with impurities by vacuum deposition or solution coating method, and improve the luminous efficiency and service life of the organic solar cell.    DETAILED DESCRIPTION - Aromatic amine compounds of formula (I) are new.    Either R1-R4 = imide, amide, ester, carbonyl, 1-25C alkyl, 2-25C alkenyl, 1-25C alkoxy, monocyclic aryl, polycyclic aryl (all optionally substituted), H, deuterium, halo, NO2, CN or OH; and    A1, A2 = monocyclic aryl or polycyclic aryl (all optionally substituted); or    NA1A2, NA1R1, NA2R4 = fused ring;    A3 = aryl, divalent heterocyclic group including N, O, S and/or Se, divalent aryl containing greater than or equal to 2 fused rings, divalent fused heterocyclic group including aryl group and N, O, S and/or Se, divalent fused heterocyclic group including N, O, S and/or Se and containing greater than or equal to 2 fused rings (all optionally substituted), preferably divalent heterocyclic group of formula (II);    A4 = aryl, divalent heterocyclic group including N, O, S and/or Se, divalent aryl containing greater than or equal to 2 fused rings, divalent fused heterocyclic group including aryl group and N, O, S and/or Se, divalent fused heterocyclic group including N, O, S and/or Se and containing greater than or equal to 2 fused rings (all optionally substituted), preferably heterocyclic group of formula (III) or fused heterocyclic group of formula (IV);    r, s = 0-2;    X2, X3 = O, S or Se;    E = electron withdrawing group, preferably F, Cl, Br, I, CN, S and N containing heterocyclic group of formula (V), NO2, CF3, C2F5, SO2CF3, SO2C2F5, SO3CF3, SO3C2F5, C6F5, COCH3, COC2H5, COC3H7, COC4H9, COC5H11, COC6H13, CO2CH3, CO2C2H5, CO2C3H7, CO2C4H9, CO2C5H11, -C(R8)=C(CN)2, 2-(3-(dicyanomethylene)cyclohex-1-en-1-yl)vinyl group of formula (VI);    R5-R12 = imide, amide, ester, carbonyl, 1-25C alkyl, 2-25C alkenyl, 1-25C alkoxy, monocyclic aryl, polycyclic aryl (all optionally substituted), H, deuterium, halo, NO2, CN or OH; and    t = 0-4.    INDEPENDENT CLAIMS are also included for:    (1) an organic solar cell, comprising a first electrode, a second electrode, and at least one organic material layer between the first and second electrodes, where at least one organic material layer includes (I); and    (2) manufacturing the organic solar cell, comprising preparing a substrate, forming the first electrode on the substrate, forming the organic layer including (I) on the first electrode, and forming the second electrode on the organic layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the organic solar cell (Drawing includes non-English language text).