FR2818442-A1  TAKEOKA A ET AL: "DEVELOPMENT AND APPLICATION OF SEE-THROUGH A-SI SOLAR CELLS" SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 29, no. 3, 1 avril 1993 (1993-04-01), pages 243-252, XP000355684 ISSN: 0927-0248;  THOMAS STARK ET AL: "Konstruktive Varianten beim Modulaufbau" PHOTOVOLTAIK ARCHITEKTONISCHE GEBAEUDEINTEGRATION, XX, XX, juillet 2000 (2000-07), pages 10-15,18-19,25-26,32-37, XP002171489 Landesgewerbeamt Baden-W}rttemberg, StuttgartWO200250913-A2  TAKEOKA A ET AL: "DEVELOPMENT AND APPLICATION OF SEE-THROUGH A-SI SOLAR CELLS" SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 29, no. 3, 1 avril 1993 (1993-04-01), pages 243-252, XP000355684 ISSN: 0927-0248;  THOMAS STARK ET AL: "Konstruktive Varianten beim Modulaufbau" PHOTOVOLTAIK ARCHITEKTONISCHE GEBAEUDEINTEGRATION, XX, XX, juillet 2000 (2000-07), pages 10-15,18-19,25-26,32-37, XP002171489 Landesgewerbeamt Baden-Wuerttemberg, Stuttgart;  See also references of EP 1346416A2EP1346416-A2  See also references of WO 0250913A2;  See references of WO 0250913A3WO200250913-A3  TAKEOKA A ET AL: "DEVELOPMENT AND APPLICATION OF SEE-THROUGH A-SI SOLAR CELLS" SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 29, no. 3, 1 avril 1993 (1993-04-01), pages 243-252, XP000355684 ISSN: 0927-0248;  THOMAS STARK ET AL: "Konstruktive Varianten beim Modulaufbau" PHOTOVOLTAIK ARCHITEKTONISCHE GEBAEUDEINTEGRATION, XX, XX, juillet 2000 (2000-07), pages 10-15,18-19,25-26,32-37, XP002171489 Landesgewerbeamt Baden-W}rttemberg, Stuttgart;  See also references of EP 1346416A2;  TAKEOKA A ET AL: "DEVELOPMENT AND APPLICATION OF SEE-THROUGH A-SI SOLAR CELLS", SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 29, no. 3, 1 April 1993 (1993-04-01), pages 243 - 252, XP000355684, ISSN: 0927-0248;  THOMAS STARK ET AL: "Konstruktive Varianten beim Modulaufbau", PHOTOVOLTAIK ARCHITEKTONISCHE GEBAEUDEINTEGRATION, XX, XX, July 2000 (2000-07-01), Landesgewerbeamt Baden-W&#252;rttemberg, Stuttgart, pages 10 - 15,18-19,25-26,32-37, XP002171489