Search Results - "Gedvilas, L.M"

A direct correlation between film structure and solar cell efficiency for HWCVD amorphous silicon germanium alloys by Mahan, A.H., Xu, Y., Gedvilas, L.M., Williamson, D.L.

“…The film structure and H bonding of high deposition rate a-SiGe:H i-layers, deposited by HWCVD and containing ~ 40 at.% Ge, have been investigated using…”
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Infrared spectroscopy of polycrystalline ZnO and ZnO:N thin films by Keyes, B.M., Gedvilas, L.M., Li, X., Coutts, T.J.

“…Polycrystalline zinc oxide (ZnO) and nitrogen-doped zinc oxide (ZnO:N) films, about 1 μm thick, were grown by metalorganic chemical vapor deposition on…”
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Combinatorial studies of Zn-Al-O and Zn-Sn-O transparent conducting oxide thin films by Perkins, J.D, del Cueto, J.A, Alleman, J.L, Warmsingh, C, Keyes, B.M, Gedvilas, L.M, Parilla, P.A, To, B, Readey, D.W, Ginley, D.S

“…In this work, we discuss the development of combinatorial deposition and analysis tools for the investigation of and the optimization of transparent conducting…”
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Optimization of buffer layers for lattice-mismatched epitaxy of GaxIn1-xAs/InAsyP1-y double-heterostructures on InP by AHRENKIEL, S. P, WANLASS, M. W, CARAPELLA, J. J, AHRENKIEL, R. K, JOHNSTON, S. W, GEDVILAS, L. M

“…We optimize InAsyP1-y buffer layers and compositional grades for lattice-mismatched heteroepitaxy of GaxIn1-xAs/InAsyP1-y double-heterostructures on InP. The…”
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Improving narrow bandgap a-SiGe:H alloys grown by hot-wire chemical vapor deposition by Xu, Yueqin, Nelson, B.P., Gedvilas, L.M., Reedy, R.C.

“…We have improved the electronic properties of narrow-bandgap (Tauc gap below 1.5 eV) amorphous-silicon germanium alloys (a-SiGe:H) grown by hot-wire chemical…”
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Optimization of buffer layers for lattice-mismatched epitaxy of Ga x In 1− x As/InAs y P 1− y double-heterostructures on InP by Ahrenkiel, S.P., Wanlass, M.W., Carapella, J.J., Ahrenkiel, R.K., Johnston, S.W., Gedvilas, L.M.

“…We optimize InAs y P 1− y buffer layers and compositional grades for lattice-mismatched heteroepitaxy of Ga x In 1− x As/InAs y P 1− y double-heterostructures…”
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Optical analysis of thin film combinatorial libraries by Perkins, J.D., Teplin, C.W., van Hest, M.F.A.M, Alleman, J.L., Li, X., Dabney, M.S., Keyes, B.M., Gedvilas, L.M., Ginley, D.S., Lin, Y., Lu, Y.

“…We have developed, and are using, optical reflection and transmission mapping as a characterization tool for analyzing compositionally graded thin film…”
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Optical absorption and electrical conductivity in amorphous In-Zn-O: A new TCO for CIGS PV by Perkins, J.D., Gennett, T., van Hest, M.F.A.M., Gedvilas, L.M., Ginley, D.S.

“…We report the coupled optical and electrical properties of a-IZO films as a function of both the metals composition and the %O 2 in the Ar/O 2 sputter gas mix…”
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Fourier transform infrared quantitative analysis of sugars and lignin in pretreated softwood solid residues by Tucker, M.P, Nguyen, Q.A, Eddy, F.P, Kadam, K.L, Gedvilas, L.M, Webb, J.D

“…Hydrolysates were obtained from dilute sulfuric acid pretreatment of whole-tree softwood forest thinnings and softwood sawdust. Mid-infrared (IR) spectra were…”
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Techniques for measuring the composition of hydrogenated amorphous silicon–germanium alloys by Nelson, Brent P, Xu, Yueqin, Webb, John D, Mason, Alice, Reedy, Robert C, Gedvilas, Lynn M, Lanford, William A

“…We grow hydrogenated amorphous silicon–germanium alloys by the hot-wire chemical vapor deposition (HWCVD) technique at deposition rates between 0.5 and 1.4 nm…”
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Amorphous Transparent Conducting Oxides (TCOS) Deposited at T ⩽ 100 °C by Perkins, J.D., Taylor, M.P., Readey, D.W., van Hest, M.F.A.M., Teplin, C.W., Alleman, J.L., Dabney, M.S., Gedvilas, L.M., Keyes, B.M., To, B., Ginley, D.S.

“…We have employed a combinatorial high-throughput approach to explore transparent conducting oxide (TCO) materials deposited at T s ⩽100°C. For In-Zn-O (IZO)…”
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Fourier transform infrared quantification of sugars in pretreated biomass liquors by Tucker, M.P, Mitri, R.K, Eddy, F.P, Nguyen, Q.A, Gedvilas, L.M, Webb, J.D

“…The process of converting renewable lignocellulosic biomass to ethanol requires a number of steps, and pretreatment is one of the most important. Pretreatment…”
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Combinatorial optimization of transparent conducting oxides (TCOs) for PV by Perkins, J.D., Taylor, M.P., van HEST, M.F.A.M., Teplin, C.W., Alleman, J.L., Dabney, M.S., Gedvilas, L.M., Keyes, B.M., To, B., Readey, D.W., Delahoy, A.E., Guo, S., Ginley, D.S.

“…Transparent conducting oxides (TCOs) can serve a variety of important functions in thin film photovoltaics such as transparent electrical contacts,…”
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a-SiGe:H materials and devices deposited by hot wire CVD using a tantalum filament operated at low temperature by Mahan, A.H., Xu, Y., Gedvilas, L.M., Reedy, R.C., Williamson, D.L., Datta, S., Cohen, J.D., Yan, B., Branz, H.M.

“…We report the deposition of improved hydrogenated amorphous silicon germanium (a-SiGe:H) films by the hot wire CVD (HWCVD) technique using a tantalum filament…”
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Fourier transform-luminescence spectroscopy of semiconductor thin films and devices by Webb, J.D, Keyes, B.M, Ahrenkiel, R.K, Wanlass, M.W, Ramanathan, K, Gedvilas, L.M, Olson, M.R, Dippo, P, Jones, K.M

“…We have been successful in adapting Fourier transform (FT) Raman accessories and spectrophotometers for sensitive measurements of the photoluminescence (PL)…”
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Role of oxygen precipitates on the performance of crystalline silicon-based photovoltaic devices by Ahrenkiel, R.K., Johnston, S.W., Gedvilas, L.M., Webb, J.D., Bisaillon, J.C.

“…Oxide precipitates (OPs) in Czochralski-grown silicon were investigated by Fourier transform infrared (FTIR) spectroscopy and ultra-high frequency…”
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Discovery and optimization of In-Zn-Sn-O based transparent conductors by combinatorial and pulsed laser deposition approaches by Perkins, J.D., del Cueto, J.A., Alleman, J.L., Warmsingh, A.C., Keyes, B.M., Gedvilas, L.M., Parilla, P.A., Li, X., To, B., Readey, D.W., Van Hest, M., Ginley, D.S.

“…There is an expanding interest in the development of new transparent conducting oxides (TCOs) for a host of applications including photovoltaics, flat panel…”
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