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coming year will be the exploration of much thinner devices, plasma-enhanced chemical vapor deposition of polycrystalline semiconductors, evaluation of multiple-wavelength optical reflectance as an in-situ diagnostic, and completion of a micro-Raman spectrometer for combinatorial materials analysis. The major objectives of this project are to: • Advance the understanding and performance of heterojunction silicon devices. • Explore new concepts aimed toward preparation of crystalline silicon films on glass. • Establish new capabilities in combinatorial deposition, diagnostics, and data mining. • Demonstrate ink-jet writing of contacts for silicon solar cells, achieving 10% efficiency. • Push thin-film technologies toward higher throughput by increasing deposition rates and reducing thickness. • Fabricate dual-junction polycrystalline thin- film cell of 14% efficiency, • Improve the understanding and performance of heteroepitaxial III-Vs on silicon. 5. Major FY 2004 Publications T.H. Wang, E. Iwaniczko, M.R. Page, D.H. Levi, Y. Yan, H.M. Branz, and Q. Wang, "Effect of emitter deposition temperature on surface passivation in hot-wire chemical vapor deposited silicon heterojunction solar cells,” Thin Solid Films, in press. Y. Xu, A.H. Mahan, L.M. Gedvilas, R.C. Reedy, and H.M. Branz, "Deposition of Photosensitive Hydrogenated Amorphous Silicon-Germanium with a Ta Hot-Wire,” Thin Solid Films, in press. M.P. Taylor, D.W. Readey, C.W. Teplin, M.F.A.M. van Hest, J.L. Alleman, M.S. Dabney, L.M. Gedvilas, B.M. Keyes, B. To, P.A. Parilla, J.D. Perkins, and D.S. Ginley "Combinatorial Growth and Analysis of the Transparent Conducting Oxide ZnO:In (IZO)," Macromo- lecular Rapid Communications 25, 344 (2004). C.W. Teplin, T. Kaydanova, D.L. Young, J.D. Perkins, D.S. Ginley, A. Ode, and D.W. Ready, "A simple method for the preparation of transparent p-type Ca-doped CuInO2 films: pulsed-laser deposition from air-sintered Ca- doped Cu2In2O5 targets,” Applied Physics Letters 85, 3789 (2004). Xuanzhi Wu and Jie Zhou, “High Efficiency CdTe solar cells on Commercial SnO2/Soda Lime Glass Prepared by Novel Manufacturing Process,” Proceedings of the 19th European Photovoltaic Energy Conference, June 2004, Paris, in press. Xiaonan Li, Timothy Gessert, and Timothy Coutts, “ The properties of Cadmium Tin Oxide Thin Film Compounds Prepared by Linear Combinatorial Synthesis,” Applied Surface Science 223 (2004) 138-143. Kannan Ramanathan, Glen Teeter, James Keane, and Rommel Noufi, “Properties of High Efficiency CuInGaSe2 (CIGS) Thin Film Solar Cells,” Thin Solid Films, Proc. 2004 E-MRS Meeting, Strasbourg, France, in press. D.J. Friedman, J.F. Geisz, and A. Ptak, "Photovoltaics applications of dilute nitrides," published in "Physics and applications of dilute nitrides," 371-393 (2004). J.F. Geisz, J.M. Olson, and D.J. Friedman, "Toward a monolithic lattice-matched III-V on silicon tandem solar cell." Proceedings of the 19th European PV Solar Energy Conference and Exhibition, Paris, France (2004). 6. University and Industry Partners Organization/ Principal Investigator Colorado School of Mines R. Collins, D. Wood, and D. Readey University of Colorado C. Rogers Location/e-mail Golden, CO rtcollins@mines.edu Boulder, CO charles.rogers@colorado.edu Description/Title of Research Activity University Collaboration Program investigation of TCOs and CIGS at NREL University Collaboration Program investigation of nanocomposite cells. FY 2004 ($K) 97.1 12.7PDF Image | FY 2004 ANNUAL REPORT DOE Solar
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