DE19916403-C1  Appl. Phys. Lett 72 (2), 1998, 235-37;  Elsevier Materials Science and Engineering, B52 (1998), 25-31;  J. Appl. Phys. Vol.83, No.4, 1998, 2104-11;  J. Appl. Phys. Vol.84, No.7, 1998, 3912-18;  S.Paulon et al., 13th Europ. Pholovoltaic Solar Energy Conference, 23-27, October 1995, Nice, France, 1750-52US8158204-B1  Technische Keramik; Vulakn Verlag, Essen, Germany, 1988.;  Bhaumik et al.: Laser annealing of zinc oxide thin film deposited by spray-CVD; Materials Science and Engineering B52 (1998); p. 25-31.;  Studenikin et al.: Optical and electrical properties of undoped ZnO films grown by spray pyrolysis of zinc nitrate solution; Journal of Applied Physics, vol. 83, No. 4, Feb. 15, 1998, pp. 2104-2111.;  Yamaya et al.: Use of helicon-wave excited plasma for aluminum-doped ZnO thin-film sputtering; Appl Phys. Lett. 72 (2), Jan. 12, 1998; pp. 235-237.;  Chen et al.: Plasma assisted molecular beam epitaxy of ZnO on c-plane sapphire: Growth and characterization; Journal of Applied Physics, vol. 84, No. 7; Oct. 1, 1998; pp. 3912-3918.;  Peulon et al.: Preparation of ZnO films by electrodeposition from aqueous solutions; 13th European Photovoltaic Solar Energy Conference, Nice, France, Oct. 23-27, 1995; pp. 1750-1752.;  Ohya et al.: Microstructure of TiO2 and ZnO films fabricated by the Sol-Gel method; J.Am.Ceram. Soc.; 79(4)pp. 825-830; (1996).;  Nii et al.: Effects of Cd-free buffer layer for CuInSe2 thin-film solar cells; CH3365-4/94/0000-0254 IEEE; 1994.;  J. Moeller et al. "CuInS2 as an Extremely Thin Absorber in an Eta Solar Cell", 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, Jul. 6-10, 1998, Vienna, pp. 209-211, XP002110735.;  "Technische Keramik" Publisher B. Thier, Vulcan Verlag, Essen 1988, by the Deutsche Keramische Gesellschaft (German Ceramic Society), pp. 2 to 25.;  G. K. Bhaumik et al. "Laser Annealing of Zinc Oxide Thin Film Deposited by Spray-CYD", Elsevier Materials Science and Engineering B52 (1998), pp. 25-31.;  S. A. Studenikin et al. "Optical and Electrical Properties of Undoped zno Films Grown by Spray Pyrolysis of Zinc Nitrate Solution", J. of Appl. Phys. Yol. 83, No. 4, Feb. 15, 1998, pp. 2104-2111.;  K. Yamaya et al. "Use of a Helicon Wave Excited 30 Plasma of Aluminium-Doped ZnO Thin-Film Sputterin", Appl. Phys. Lett. 72(2), Jan. 12, 1998, pp. 235-237.;  Y. Chen et al. "Plasma Assisted Molecular Beam Epitaxy of ZnO on c-Plane Sapphire: Growth and Characterization" , J. of Appi. Phys., 5 vol. 84, No. 7, Oct. 1, 1998, pp. 3912-3918.;  S. Peulon et al. "Preparation of ZnO Films by Electrodepasition from Aqueous Solution", 13th Europ. 10 Photovaltaic Solar Energy Conference, Oct. 23-27, 1995. Nice, France, pp. 1750-1752.;  Y. Ohya et al. "Microstructure of Ti02 and ZnO Films Fabricated by the Sal-Gel-Method", J. Am. Ceram. Q., Soc. 79[4], (1996), pp. 825-830.;  T. Nii et al. "Effects of Cd-Free Buffer Layer for CuInSe2 Thin Solar Cells", First WCPEC; Dec. 5-9, 1994; Hawaii, pp. 254-257.