TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation method is given.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The end groups of base formula B1 and/or C1.R5-R8 = aryl, alkyl aryl, alkoxy aryl, or aryloxy aryl.The p-type material is polythiophene, poly(3-alkylothiphene), poly(3-arylthiophene), poly(3,4-alkoxythiophene), poly(phenylene-co-vinylene), poly(methylethylhexylphenylene-co-vinylene), other substituted poly(phenylene-co-vinylene)s, and other p-type organic polymers. The composition comprises one part by weight the material and one-quarter to two parts by weight the copolymer. The composition has at least one dimension of 10-1000 nm. The layer has surface embossed and/or nano-imprinted pillars and/or wells. Preferred Method: The method further comprises fabricating a photovoltaic device by providing substrate comprising silicon, germanium, quartz, glass, polyethylene, polyethylene terephthalate, polydimethylsiloxane, other plastic materials, and other elastomeric materials; depositing on the substrate a first electrode comprising gold, silver, aluminum, other conductive metals, indium-tin-oxide, and other conductive metal oxides materials; depositing on the first electrode a liquid solution; casting the solution producing at least one solvent-swollen film; removing the residual solvent from the solvent-swollen film with vacuum and/or heat producing organic hetero junction film; nano-imprinting and/or embossing pillars and/or wells on and/or in the heterojunction film; and depositing on the imprinted and/or embossed heterojunction film second electrode comprising gold, silver, aluminum, other conductive metals, indium-tin-oxide, and other conductive metal oxides materials producing the photovoltaic device. EXAMPLE - 2,3,5,6-Tetramino pyrazine was added polyphosphoric acid under a nitrogen blanket. The mixture heated to 120 degrees C and vacuum was applied to the reaction. When reaction ceases to bubble, soluble substituted perylene-pyridine containing compound of formula (E1) was added and the reaction is allowed to stir for day. The temperature is raised to 180 degrees C and allowed to stir or another 2 days. The temperature was then raised to 225 degrees C and stirred for 4 hours. The reaction was cooled to 100 degrees C and poured into water. The precipitate was collected, washed with methanol and dried to give substituted perylene-pyridine containing compound of formula (E2).