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Thin film cadmium telluride photovoltaic cells

Description: This report describes research to develop to vacuum-based growth techniques for CdTe thin-film solar cells: (1) laser-driven physical vapor deposition (LDPVD) and (2) radio-frequency (rf) sputtering. The LDPVD process was successfully used to deposit thin films of CdS, CdTe, and CdCl{sub 2}, as well as related alloys and doped semiconductor materials. The laser-driven deposition process readily permits the use of several target materials in the same vacuum chamber and, thus, complete solar cell… more
Date: April 1, 1992
Creator: Compaan, A. & Bohn, R. (Toledo Univ., OH (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recrystallization of PVD CdTe Thin Films Induced by CdCl2 Treatment -- A Comparison Between Vapor and Solution Processes: Preprint

Description: This paper describes the large concentration of 60..deg.. <111> twin boundaries that was observed in every CdTe film analyzed in this work, even after recrystallization and grain growth, confirming the low energy of these interfaces.
Date: May 1, 2008
Creator: Mountinho, H. R.; Dhere, R. G.; Romero, M. J.; Jiang, C. S.; To, B. & Al-Jassim, M. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Plasma and Ion Assistance in Physical Vapor Deposition: AHistorical Perspective

Description: Deposition of films using plasma or plasma-assist can betraced back surprisingly far, namely to the 18th century for arcs and tothe 19th century for sputtering. However, only since the 1960s thecoatings community considered other processes than evaporation for largescale commercial use. Ion Plating was perhaps the first importantprocess, introducing vapor ionization and substrate bias to generate abeam of ions arriving on the surface of the growing film. Ratherindependently, cathodic arc deposi… more
Date: February 28, 2007
Creator: Anders, Andre
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Targets for the National Ignition Campaign

Description: The National Ignition Facility (NIF) is a 192 beam Nd-glass laser facility presently under construction at Lawrence Livermore National Laboratory (LLNL) for performing inertial confinement fusion (ICF) and experiments studying high energy density (HED) science. When completed in 2009, NIF will be able to produce 1.8 MJ, 500 TW of ultraviolet light for target experiments that will create conditions of extreme temperatures (&gt;10{sup 8} K), pressures (10 GBar) and matter densities (&gt;100 g/cm{… more
Date: September 7, 2007
Creator: Atherton, L J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diamond-like nanocomposite coatings for LIGA-fabricated nickel alloy parts.

Description: A commercial plasma enhanced chemical vapor deposition (PECVD) technique with planetary substrate rotation was used to apply a thin (200-400 nm thick) conformal diamond-like carbon (DLC) coating (known as a diamond-like nanocomposite (DLN)) on LIGA fabricated Ni-Mn alloy parts. The PECVD technique is known to overcome the drawbacks associated with the line-of-sight nature of physical vapor deposition (PVD) and substrate heating inherent with traditional chemical vapor deposition (CVD). The purp… more
Date: March 1, 2005
Creator: Prasad, Somuri V. & Scharf, Thomas W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nanoparticle Solar Cell Final Technical Report

Description: The purpose of this work was to demonstrate all-inorganic nanoparticle-based solar cells with photovoltaic performance extending into the near-IR region of the solar spectrum as a pathway towards improving power conversion efficiencies. The field of all-inorganic nanoparticle-based solar cells is very new, with only one literature publication in the prior to our project. Very little is understood regarding how these devices function. Inorganic solar cells with IR performance have previously bee… more
Date: June 17, 2008
Creator: Breeze, Alison, J; Sahoo, Yudhisthira; Reddy, Damoder; Sholin, Veronica & Carter, Sue
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CIBS Solar Cell Development

Description: This research focused on efforts to prepare and characterize the first copper-indium-boron-diselenide (CIBS) photovoltaic materials. Attempts to fabricate CIBS in thin-film form followed a three-step process: 1) RF sputtering of copper, indium, and boron to form a copper-indium-boron (CIB) alloy; 2) ex-situ selenization of CIB via physical vapor deposition; 3) annealing the final product. No CIBS materials were produced with this method due to the formation of an unstable boron diselenide speci… more
Date: October 6, 2008
Creator: Exstrom, Christopher L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High damage threshold anti-reflectors by physical vapor deposited amorphous fluoropolymer

Description: High laser-resistant anti-reflective coatings were made from an amorphous fluoropolymer (Teflon AF2400) material by physical vapor deposition. Single layers of Teflon AF2400 were thermally deposited in a vacuum chamber. Refractive index and adhesion of the coatings were determined as a function of deposition rate (2 to 20 {Angstrom}/s), substrate temperature (20 to 200C), and glow-discharge bias potential ({minus}1500 to 1500 V). An anti-reflective coating of an amorphous fluoropolymer (Teflon … more
Date: November 1, 1993
Creator: Chow, R.; Spragge, M. K.; Loomis, G. E.; Thomas, I. M.; Rainer, F.; Ward, R. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Vapor deposition of thin-film Y-doped ZrO{sub 2} for electrochemical device applications

Description: Solid oxide electrolytes based on yttria-stabilized zirconia (YSZ) are widely used in applications such as oxygen sensors, solid oxide fuel cells, oxygen pumps, electrocatalytic reactors, and electrochemically driven oxygen separation membranes. However, bulk YSZ is used in these applications. This requires high operating temperatures in order to minimize ohmic loss. One alternative of overcoming this problem is to use a thin film of the electrolyte. In the work, the authors have grown polycrys… more
Date: December 1, 1994
Creator: Chung, B. W.; Brosha, E. L.; Brown, D. R. & Garzon, F. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thin film cadmium telluride photovoltaic cells. Annual subcontract report, 23 July 1990--31 October 1991

Description: This report describes research to develop to vacuum-based growth techniques for CdTe thin-film solar cells: (1) laser-driven physical vapor deposition (LDPVD) and (2) radio-frequency (rf) sputtering. The LDPVD process was successfully used to deposit thin films of CdS, CdTe, and CdCl{sub 2}, as well as related alloys and doped semiconductor materials. The laser-driven deposition process readily permits the use of several target materials in the same vacuum chamber and, thus, complete solar cell… more
Date: April 1, 1992
Creator: Compaan, A. & Bohn, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An amorphous fluoropolymer: Next generation optical coating candidate

Description: Anti-reflective (AR) and high reflector (HR) optical coatings were made by physical vapor deposition (PVD) of Teflon AF2400, a perfluorinated amorphous polymer. The AR had the highest laser damage thresholds recorded for PVD coatings at the Lawrence Livermore National Laboratory damage facility. The HR was a multilayer of ZnS and AF2400. The bandwidth was 550 mn, centered at 1064 mn. Single layers of Teflon AF2400 deposited by PVD were characterized optically. The refractive index could be inte… more
Date: May 1, 1994
Creator: Chow, R.; Loomis, G. E.; Spragge, M. K.; Lindsey, E. L.; Rainer, F.; Ward, R. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Impurities in chromium deposits produced by electroplating and physical vapor deposition

Description: Impurity contents in electrodeposited (hexavalent and trivalent) chromium deposits and physically vapor deposited (thermal evaporation, electron beam evaporation and rf-sputtering) were compared. Oxygen is the key impurity obtained in electrodeposited films but it can be minimized in hexavalent plating solutions by operating at high temperature, e. g., 85 C. Electrodeposits produced in trivalent chromium plating solutions and physically vapor deposited films have much higher oxygen contents tha… more
Date: May 1, 1994
Creator: Dini, J. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of wear resistant ceramic coatings for diesel engine components. Final report

Description: Improved fuel economy and a reduction of emissions can be achieved by insulation of the combustion chamber components to reduce heat rejection. However, insulating the combustion chamber components will also increase the operating temperature of the piston ring/cylinder liner interface from approximately 150{degree}C to over 300{degree}C. Existing ring/liner materials can not withstand these higher operating temperatures and for this reason, new materials need to be developed for this critical … more
Date: April 1, 1992
Creator: Haselkorn, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Boron Nitride Capacitors for Advanced Power Electronic Devices

Description: This project fabricates long-life boron nitride/boron oxynitride thin film -based capacitors for advanced SiC power electronics with a broad operating temperature range using a physical vapor deposition (PVD) technique. The use of vapor deposition provides for precise control and quality material formation.
Date: November 1, 2010
Creator: Badi, N.; Starikov, D.; Boney, C.; Bensaoula, A. & Johnstone, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of Advanced Materials for Gas Turbine Coatings at Elevated Temperatures Using Selected Microstructures and Characteristic Environments for Syngas Combustion

Description: Thermal barrier coatings (TBCs) that can be suitable for use in industrial gas turbine engines have been processed and compared with electron beam physical vapor deposition (EBPVD) microstructures for applications in advanced gas turbines that use coal-derived synthesis gas. Thermo-physical properties have been evaluated of the processed air plasma sprayed TBCs with standard APS-STD and vertically cracked APS-VC coatings samples up to 1300 C. Porosity of these selected coatings with related mic… more
Date: February 10, 2011
Creator: Diwan, Ravinder; Mensah, Patrick; Li, Guoqiang; Uppu, Nalini; Akwaboa, Strphen; Silva, Monica et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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STANFORD IN-SITU HIGH RATE YBCO PROCESS: TRANSFER TO METAL TAPES AND PROCESS SCALE UP

Description: Executive Summary The materials science understanding of high rate low cost processes for Coated Conductor will benefit the application to power utilities for low loss energy transportation and power generation as well for DOD applications. The research in this program investigated several materials processing approaches that are new and original, and are not being investigated elsewhere. This work added to the understanding of the material science of high rate PVD growth of HTSC YBCO assisted … more
Date: April 14, 2009
Creator: Beasley, Malcolm R. & H.Hammond, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nanocoatings for High-Efficiency Industrial and Tooling Systems

Description: This industry-driven project was the result of a successful response by Eaton Corporation to a DOE/ITP Program industry call. It consisted of three phases in which ORNL participated. In addition to Eaton Corporation and ORNL (CRADA), the project team included Ames Laboratory, who developed the underlying concept for aluminum-magnesium-boron based nanocomposite coatings [1], and Greenleaf, a small tooling manufacturer in western Pennsylvania. This report focuses on the portion of this work that … more
Date: February 1, 2011
Creator: Blau, P; Qu, J. & Higdon, C. (Eaton Corporation)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A tunable electrochromic fabry-perot filter for adaptive optics applications.

Description: The potential for electrochromic (EC) materials to be incorporated into a Fabry-Perot (FP) filter to allow modest amounts of tuning was evaluated by both experimental methods and modeling. A combination of chemical vapor deposition (CVD), physical vapor deposition (PVD), and electrochemical methods was used to produce an ECFP film stack consisting of an EC WO{sub 3}/Ta{sub 2}O{sub 5}/NiO{sub x}H{sub y} film stack (with indium-tin-oxide electrodes) sandwiched between two Si{sub 3}N{sub 4}/SiO{su… more
Date: October 1, 2006
Creator: Blaich, Jonathan David; Kammler, Daniel R.; Ambrosini, Andrea; Sweatt, William C.; Verley, Jason C.; Heller, Edwin J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Report: Biological and Synthetic Nanostructures Controlled at the Atomistic Level

Description: Nanotechnology holds great promise for many application fields, ranging from the semiconductor industry to medical research and national security. Novel, nanostructured materials are the fundamental building blocks upon which all these future nanotechnologies will be based. In this Strategic Initiative (SI) we conducted a combined theoretical and experimental investigation of the modeling, synthesis, characterization, and design techniques which are required to fabricate semiconducting and meta… more
Date: February 21, 2007
Creator: Williamson, A & van Buuren, T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CuIn(1-x)Ga(x)Se-Based Solar Cells prepared from Electrodeposited and Electroless-Deposited Precursors

Description: Three devices were fabricated from electrodeposited (ED) and electroless-deposited (EL) precursors. Compositions were adjusted with additional In and Ga by physical vapor deposition (PVD) for an ED and an EL device.
Date: January 1, 2000
Creator: Batchelor, W. K. & Bhattacharya, R. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Novel Low Cost Organic Vapor Jet Printing of Striped High Efficiency Phosphorescent OLEDs for White Lighting

Description: In this program, Universal Display Corporation and University of Michigan proposed to integrate three innovative concepts to meet the DOE's Solid State Lighting (SSL) goals: (1) high-efficiency phosphorescent organic light emitting device (PHOLED{trademark}) technology, (2) a white lighting design that is based on a series of red, green and blue OLED stripes, and (3) the use of a novel cost-effective, high rate, mask-less deposition process called organic vapor jet printing (OVJP). Our PHOLED t… more
Date: December 31, 2008
Creator: Hack, Mike
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemically Vapor Deposited Yttria-Stabilized Zirconia (YSZ) for Thermal and Environmental Barrier Coating

Description: Yttria-stabilized zirconia (YSZ) is used as a thermal barrier coating (TBC) to protect super-alloy blades such as Mar-M247 or Rene-N5 during engine operation. The current method for YSZ fabrication for TBC applications is by air-plasma spraying (APS) or electron beam physical vapor deposition (EB-PVD) (Haynes 1997). APS gives reasonable deposition rates, but has a limited life and aging effects due to its porous and lamellar structure. The EB-PVD coatings are more stable and can accommodate the… more
Date: April 22, 2003
Creator: Varanasi, V. G.; Besmann, T. M.; Lothian, J. L.; Xu, W. & Starr, T. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MODELING OF CHEMICAL VAPOR DEPOSITED ZIRCONIA FOR THERMAL BARRIER AND ENVIRONMENTAL BARRIER COATINGS

Description: Thermal and environmental barrier coatings are important components of current and future energy systems. Such coatings--applied to hot, metallic surfaces in combustors, heat exchanger and turbines--increase the allowable operating temperature and increase the efficiency of the energy system. Because of its low thermal conductivity and high thermal expansion yttria-stabilized zirconia (YSZ) is the material of choice for protection of structural components in many high temperature applications. … more
Date: April 22, 2003
Creator: Starr, T.L; Xu, W. & Qiu, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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