WO200245199-A1  See also references of EP 1339129A1EP1339129-A1  KUDO K ET AL: "PHOTOVOLTAIC EFFECTS OF MEROCYANINE-ZNO CELLS" JAPANESE JOURNAL OF APPLIED PHYSICS, JAPAN SOCIETY OF APPLIED PHYSICS, TOKYO, JP, vol. 19, no. 11, November 1980 (1980-11), pages L683-L685, XP001014650 ISSN: 0021-4922;  C. GEOFFRROY-CHAPOTOT ET AL.: "Synthesis and photophysical characteristics of novel molecular rotor fluorescent dyes derived from coumarins" RECENTS PROGES EN GENIE DES PROCEDES, vol. 12(61), 1998, pages 31-36, XP008067949;  PATENT ABSTRACTS OF JAPAN vol. 010, no. 219 (C-363), 31 July 1986 (1986-07-31) & JP 61 056175 A (YAMANOUCHI PHARMACEUT CO LTD), 20 March 1986 (1986-03-20);  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12, 3 January 2001 (2001-01-03) & JP 2000 268892 A (FUJI PHOTO FILM CO LTD), 29 September 2000 (2000-09-29);  See also references of WO 0245199A1;  See references of WO 0245199A1;  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12, 3 January 2001 (2001-01-03)&JP 2000 268892 A (FUJI PHOTO FILM CO LTD), 29 September 2000 (2000-09-29);  PATENT ABSTRACTS OF JAPAN vol. 010, no. 219 (C-363), 31 July 1986 (1986-07-31)&JP 61 056175 A (YAMANOUCHI PHARMACEUT CO LTD), 20 March 1986 (1986-03-20)US7262361-B2  C. Geoffroy-Chapotot et al; Synthesis and Photophysical Characteristics of Novel Molecular Rotor Fluorescent Dyes Derived From Coumarins; Recents Proges En Genie Des Procedes; vol. 12(61); 1998, pp. 31-36.;  Hara et al, "A coumarin-derivative dye sensitized nanocrystalline TiO2 solar cell having a high solar-energy conversion efficiency up to 5.6&%#x201d;, Chem. Commun., pp. 569-570, Mar. 6, 2001.;  Hara et al, "Design of new coumarin dyes having thiophene moieties for highly efficient organic-dye-sensitized solar cells," New J. Chem., vol. 27, pp. 783-785, (2003).;  Kudo K. Et al; Photovoltaic Effects of Merocyanine-ZnO Cells; Japanese Journal of Applied Physics, Tokyo, JP, vol. 19, No. 11, Nov. 1980; pp. L683-L685.;  Machine English Translation of JP 2000-223167 which published Aug. 2000.EP1339129-B1  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12, 3 January 2001 (2001-01-03)&JP 2000 268892 A (FUJI PHOTO FILM CO LTD), 29 September 2000 (2000-09-29);  C. GEOFFRROY-CHAPOTOT ET AL.: "Synthesis and photophysical characteristics of novel molecular rotor fluorescent dyes derived from coumarins" RECENTS PROGES EN GENIE DES PROCEDES, vol. 12(61), 1998, pages 31-36, XP008067949;  PATENT ABSTRACTS OF JAPAN vol. 010, no. 219 (C-363), 31 July 1986 (1986-07-31)&JP 61 056175 A (YAMANOUCHI PHARMACEUT CO LTD), 20 March 1986 (1986-03-20);  KUDO K ET AL: "PHOTOVOLTAIC EFFECTS OF MEROCYANINE-ZNO CELLS" JAPANESE JOURNAL OF APPLIED PHYSICS, JAPAN SOCIETY OF APPLIED PHYSICS, TOKYO, JP, vol. 19, no. 11, November 1980 (1980-11), pages L683-L685, XP001014650 ISSN: 0021-4922