TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Component: The photovoltaic device further comprises a transparent substrate on a side of the anode or the cathode facing away from the photoactive layer. It has two photoactive layers including a first photoactive layer containing the electron transporting material and a second photoactive layer containing the hole transporting material. The first photoactive layer is in contact with the cathode and the second photoactive layer is in contact with the anode. The photoactive layer further comprises a third photoactive layer in communication with the first or second photoactive layer. The third photoactive layer contains the light harvesting material. It is placed between the first and second photoactive layers.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The polymer of the composition is polycarbonate, polyarylate, polyimide, poly(amide-imide), poly(aryl ether), or polyester carbonate. It is poly(2,6-dimethyl-1,4-phenylene oxide) or a product of condensing 4,4'-dibromobiphenyl with 9,9-bis(4-hydroxyphenyl)fluorene. It is poly(arylene ether) comprising repeating units of a structure -(-O-Ar1-O-Ar2-)m-(-O-Ar3-O-Ar4-)n-. The Ar1-Ar4 are divalent arylene radicals of formulae (1-10).m = 0-1, preferably 0.5;n = 1-m, preferably 0.5;Ar1-Ar4 = divalent arylene radicals.In formulae (1-10), Ar1-Ar4 cannot be isomeric equivalents other than diradical 9,9-diphenylfluorene.Preferred Composition: The photoactive material is at least 50 wt.%.Preferred Property: The Tg of the polymer of the composition is at least 150 degrees C.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Material: The photoactive material of the composition contains a hole transporting organic material from 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM), tetrathiofulvalene (TTF), alpha-quaterthiophene, alpha-hexathiophene, thiophene derivatives, oligophenylenevinylenes, oligofluorenes, phthalocyanines, porphyrins, aryl amine derivative, 4,4',4''-Tris(N-(2-naphthyl)-N-phenyl-amino)-triphenylamine, N,N'-bis(4-methylphenyl)-N,N'-bis(phenyl)-benzidine, or N,N'-di(naphthalene-2-yl)-N,N'-diphenylbenzidine.The photoactive material of the composition contains an electron transporting organic material from 2,4,7-trinitrofluorenone, ortho-benzoquinone, tetracyanoquinodimethane (TCNQ), tetracyanoethylene, perylene derivatives, N,N'-bis(2,5-di-tert-butylphenyl)-3,4, 9,10-perylenedicarboximide, perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), N,N'-bis(1-ethylpropyl)-3,4,9,10-perylene bis(tetracarboxyl diimide) (EP-PTC), or N,N'-ditridecyl-3,4,19,10-perylene tetracarboxylic diimide.The photoactive material of the composition contains a light harvesting organic material from rhodamine dyes, pyrromethene dyes, perylenes, coumarin dyes, or 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM).