WO2005004252-A2  PATENT ABSTRACTS OF JAPAN Bd. 2003, Nr. 12, 5. Dezember 2003 (2003-12-05) -& JP 2004 165474 A (MATSUSHITA ELECTRIC IND CO LTD; FUJITA KATSUHIKO), 10. Juni 2004 (2004-06-10);  LOOS J ET AL: "The use of the focused ion beam technique to prepare cross-sectional transmission electron microscopy specimen of polymer solar cells deposited on glass" POLYMER, ELSEVIER SCIENCE PUBLISHERS B.V, GB, Bd. 43, Nr. 26, Dezember 2002 (2002-12), Seiten 7493-7496, XP004393266 ISSN: 0032-3861;  BRABEC C J ET AL: "The influence of materials work function on the open circuit voltage of plastic solar cells" THIN SOLID FILMS, ELSEVIER SEQUOIA, NL, Bd. 403-404, 1. Februar 2002 (2002-02-01), Seiten 368-372, XP004430386 ISSN: 0040-6090 in der Anmeldung erwaehnt;  SHAHEEN SEAN E ET AL: "2.5&percent; efficient organic plastic solar cells" APPLIED PHYSICS LETTERS, AIP, AMERICAN INSTITUTE OF PHYSICS, MELVILLE, NY, US, Bd. 78, Nr. 6, 5. Februar 2001 (2001-02-05), Seiten 841-843, XP012028582 ISSN: 0003-6951 in der Anmeldung erwaehnt;  MANCA J V ET AL: "STATE-OF-THE-ART MIDMO-PPV:PCBM BULK HETERO-JUNCTION ORGANIC SOLAR CELLS: MATERIALS, NANO-MORPHOLOGY AND ELECTRO-OPTICAL PROPERTIES" PROCEEDINGS OF THE SPIE "ORGANIC PHOTOVOLTAICS III", SPIE, BELLINGHAM, VA, US, Bd. 4801, 11. Juli 2002 (2002-07-11), Seiten 15-20, XP001191198 ISSN: 0277-786XUS7407831-B2  Brabec et al., "Photovoltaic properties of conjugated polymer/methanofullerene composities embedded in a polystyrene matrix.", May 1, 1999, Journal of Applied Physics, vol. 85, No. 9, pp. 6866-6872.;  Brabec et al., "Photovoltaic properties of conjugated polymermethanofullerene composities embedded in a polystyrene matrix.", May 1, 1999, Journal of Applied Physics, vol. 85, No. 9, pp. 6866-6872.;  Brabec et al., "Plastic solar cells", Advanced Functional Materials, 2001, 11, No. 1, Feb.;  Brabec et al., "The influence of materials work function on the open circuit voltage of plastic solar cells", Thin Solid Films, Elsevier Sequoia, NL, vol. 403-404 (2002), 368-372.;  Cravino et al, "Conjugated polymer/fullerene based organic solar cells", Contribution for the Proceedings for the European Meeting on High Efficiency Solar Cells, Ispra, Italy, Nov. 15-16, 2001.;  Cravino et al, "Conjugated polymerfullerene based organic solar cells", Contribution for the Proceedings for the European Meeting on High Efficiency Solar Cells, Ispra, Italy, Nov. 15-16, 2001.;  Gebeyehu et al., "Photovoltaic properties of conjugated polymer/fullerene composites on large area flexible substrates." 2000, Chemcial Society of Ethiopia, vol. 14, No. 1, pp. 57-68.;  Gebeyehu et al., "Photovoltaic properties of conjugated polymerfullerene composites on large area flexible substrates." 2000, Chemcial Society of Ethiopia, vol. 14, No. 1, pp. 57-68.;  Loos et al. "The use of the focused ion bean technique to prepare cross-sectional transmission electron microscopy specimen of polymer solar cells deposited on glass", Polymer, Elsevier Science Publishers B.V., GB, vol. 43, No. 26, Dec. 2002.;  Manca et al. "State-of-the-art MIDMO-PPV:PCBM bulk hetero-junction organic solar cells: materials, nano-morphology and electro-optical properties", Proceedings of the SPIE "Organic Photovoltaics III", SPIE, Bellingham, VA, vol. 4801, No. 11, Jul. 2002.;  Shaheen et al., "2.5% efficient organic plastic solar cells", Applied Physics Letters, AIP, American Institute of Physics, Melville, NY, vol. 78, No. 6, Feb. 5, 2001.;  Winder et al., "Sensitization of low bandgap polymer bulk heterojunction solar cells", Thin Solid Films, Elsevier Sequoia, NL, vol. 403-404 (2002), 373-379.