TECHNOLOGY FOCUS - ELECTRONICS - Preferred Device: In the device, the anode comprises, metals, alloys, ITO, conducting polymers, or any combinations The cathode comprises metals selected from iron (Fe), aluminum (Al), magnesium (Mg), manganese (Mn), nickel (Ni), and calcium (Ca). Alternatively, the multi-layer organic photovoltaic device comprises: an anode; a cathode; an and organic heterojunction separating the anode and the cathode; where the heterojunction comprises an electron donor layer, in contact with an electron acceptor layer; where the organic heterojunction contains a mixed ligand metal-organic complex of Formula (II). In a second alternative case, the multi-layer organic photovoltaic device comprises: an anode; a cathode; and an organic heterojunction separating the anode and the cathode; where the heterojunction comprises an electron donor layer, in contact with an electron acceptor layer; where the organic heterojunction contains a comprises a mixed ligand metal-organic complex of Formula (III). In a third alternative case, the multi-layer organic photovoltaic device comprises: an anode; a cathode; and an organic heterojunction separating the anode and the cathode; where the heterojunction comprises an electron donor layer, in contact with an electron acceptor layer; where the organic heterojunction contains a comprises a mixed ligand metal-organic complex of Formula (IV), (V), (VI), and/or (VII).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Complex: In the mixed ligand metal-organic complex, the complex absorbs an UV radiation, a visible radiation, and a near-infrared radiation. The complex is contained in an organic heterojunction separating an anode and a cathode of a multi-layer organic photovoltaic (OPV) device, where the heterojunction comprises an electron donor layer, in contact with an electron acceptor layer. The complex donates or accepts one or more electrons. Also, the complex comprises Ru(phen)2(bdt), where phen is 1,10-phenanthroline, and bdt is 1,2-benzenedithiolate. The complex comprises Pt(dmecbpy)(bdt), where dmecbpy is 4,4'-di-methoxyester-2,2'-bipyridine, and bdt is 1,2-benzenedithiolate. Also, the complex comprises (Pt(dbbpy)(tdt))(TENF), where dbbpy is 4,4'-di-tert-butyl-2,2'-bipyridine, tdt is 3,4-toluenedithiolate, and TENF is 2,4,5,7-tetran itro-9-fluorenone. Alternatively, the mixed ligand metal-organic complex is of Formula (II).M=a metal with a d8 electronic configuration selected from Pt, Pd, Ni, Fe, Ru, Os, Co, Rh, and Ir;X and X'=one or more first ligand donor atoms, selected from N, P, As, and Sb;Y and Y'=one or more second ligand donor atom selected from S, Cl, O, F, and Br;R=independently selected from a hydrogen, a methyl group, an ethyl group, a t-butyl group, a -COOCH3 group, a 1-6C alkyl, a 1-6C alkenyl, a halo, a substituted 1-6C alkyl, a substituted 1-6C alkenyl, a carbonyl, a carbonate ester, an acetoxy group, an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group;R'=independently selected from a hydrogen, a methyl group, an ethyl group, a t-butyl group, a -COOCH3 group, a 1-6C alkyl, a 1-6C alkenyl, a halo, a substituted 1-6C alkyl, a substituted 1-6C alkenyl, a carbonyl, a carbonate ester, an acetoxy group, an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group; andR''=independently selected from a hydrogen, a methyl group, an ethyl group, a t-butyl group, a -COOCH3 group, a 1-6C alkyl, a 1-6C alkenyl, a halo, a substituted 1-6C alkyl, a substituted 1-6C alkenyl, a carbonyl, a carbonate ester, an acetoxy group, an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.In a second alternative case, the mixed ligand metal-organic complex is of Formula (III).M=a metal with a d8 electronic configuration selected from Pt, Pd, Ni, Fe, Ru, Os, Co, Rh, and Ir;X and X'=one or more first ligand donor atoms, selected from N, P, As, and Sb;Y and Y'=one or more second ligand donor atom selected from S, Cl, O, F, and Br;R1=independently selected from a hydrogen, a methyl group, an ethyl group, a t-butyl group, a -COOCH3 group, a 1-6C alkyl, a 1-6C alkenyl, a halo, a substituted 1-6C alkyl, a substituted 1-6C alkenyl, a carbonyl, a carbonate ester, an acetoxy group, an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group;R2=independently selected from a hydrogen, a methyl group, an ethyl group, a t-butyl group, a -COOCH3 group, a 1-6C alkyl, a 1-6C alkenyl, a halo, a substituted 1-6C alkyl, a substituted 1-6C alkenyl, a carbonyl, a carbonate ester, an acetoxy group, an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group; andR3=independently selected from a carbon, an oxygen, a nitrogen, or a sulfur.In a third alternative case, the mixed ligand metal-organic complex is of Formula (IV).M2=a metal with a d6 electronic configuration selected from Fe, Ru, Os, Co, Rh, Ir, Pt, Pd, and Ni;X, X', X'', and X'''=one or more neutral ligand donor atoms, selected from N, P, As, and Sb; andY and Y'=one or more anionic ligand donor atoms selected from S, Cl, O, F, and Br.In a fourth alternative case, the mixed ligand metal-organic complex is of Formula (V), (VI), and (VII). EXAMPLE - No example given.