WO8809265-A  IEEE Electron Device Letters, Vol. EDL-3, issued May 1982, H. IIDA et al "High Efficiency a-Si: H p-i-n Solar Cell using a SnO2/Glass Substrate, pages 114-115.;  IEEE Electron Device Letters, Vol. EDL-4, issued May 1982, H. IIDA et al, "Efficiency of the a-Si:H Solar Cell and Grain Size of SnO2 Transparent Conductive Film", pages 157-159 (see Entire Article).;  IEEE Transactions on Electron Devices, Vol. ED-31, issued May 1984, H. IIDA et al, "Optical Confinement Type a-Si:H Solar Cell using Milky Tin Oxide on Glass", pages 717-719 (see Entire Article).;  IEEE Transactions on Electron Devices, Vol. Ed-34, issued February 1987, H. IIDA et al, "The Structure of Natively Textured SnO2 Film and its Application to an Optical Confinement-Type a-Si:H Solar Cell", pages 271-276 (see Entire Article).;  See also references of EPA 0360831;  See also references of EP 0360831A1US4808462-A  A. Greenwald et al., Conference Record, 19th IEEE Photovoltaic Specialists Conference (1987), pp. 621-625.;  Carlson et al., Properties of Amorphous Silicon and a-Si Solar Cells, Jun. 1977, pp. 211-225, RCA Review, vol. 38.;  D. Carlson, Amorphous Silicon Solar Cells, Apr., 1977, pp. 449-453, IEEE Trans. Electron Devices, vol. ED-24.;  E. Yablonovitch et al., Intensity Enhancement in Textured Optical Sheets for Solar Cells, Feb., 1982, pp. 300-305, IEEE Trans on Electron Devices, vol. ED-29.;  H. Deckman et al., Optical Enhancement of a-SiH()x Solar Cells, 16th IEEE Photovoltaic Specialists Conf. (1982), pp. 1425-1426.;  H. Iida et al., Efficiency of the a-Si:H Solar Cell and Grain Size of SnO()2 Transparent Conductive Film, May, 1983, pp. 157-159, IEEE Electron Device Letters, vol. EDL-4.;  H. Iida et al., High Efficiency a-Si:H p-i-n Solar Cell Using a SnO2 Glass Substrate, May 1982, pp. 114-115, IEEE Electron Device Letters, vol. EDL-3.;  H. Iida et al., Optical Confinement Type A-Si:H Solar Cell Using Milky Tin Oxide on Glass, May, 1984, pp. 717-719, IEEE Trans. on Electron Devices, vol. ED-31.;  H. Iida et al., The Structure of Natively Textured SnO()2 Film and its Application to an Optical Confinement-Type A-Si:H Solar Cell, Feb., 1987, pp. 271-276, IEEE Trans. on Electron Devices, vol. ED-34.;  H. Takakura, Low-Cost High-Efficiency SnO2 n( )+30 -p S1 Heteroface Solar Cell Fabricated by Paint-On-Diffusant Method, May, 1980, pp. 1186-1191, 14th IEEE Photovoltaic Specialists Conf.;  P. A. Iles, Design Factors for Transparent Conducting Layers in Solar Cells, Nov., 1976, pp. 978-988, 12th IEEE Photovoltaic Specialists Conf.EP360831-A  No further relevant documents disclosed;  See also references of WO 8809265A1