Materials, Chemical, and Computational Science Research Operations

Research output

Research Output per Year 1989 2002 2003 2004 2006 2024

• 137 Article
• 94 Paper
• 11 Subcontract Report
• 10 Presentation
• 11 More
  • 4 Poster
  • 4 Technical Report
  • 2 Fact Sheet
  • 1 Chapter

Research Output per Year

Research Output per Year

Search results

• 2002

  In-Situ Characterization of the Amorphous to Microscrystalline Transition in Hot Wire CVD Growth of Si:H Using Real Time Spectroscopic Ellipsometry

  Levi, D. H., Nelson, B. P., Perkins, J. D. & Moutinho, H. R., 2002, p. 1146-1149. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Chemical Vapor Deposition 100%
  • Tennessine 100%
  • Surface Morphology 33%
  • Film Growth 33%
  2 Scopus Citations

• Investigation of the Microstructure of Cu(In,Ga)Se2 Thin Films Used in High-Efficiency Devices

  Noufi, R., Yan, Y., Abu-Shama, J., Jones, K., Al-Jassim, M., Keyes, B., Alleman, J. & Ramanathan, K., 2002, p. 508-510. 3 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Transmission Electron Microscopy 100%
  • Energy-Dispersive X-Ray Spectroscopy 100%
  • Surface (Surface Science) 100%
  • Thin Films 100%
  10 Scopus Citations

• Mapping the Phase-Change Parameter Space of Hot-Wire CVD Si:H Films Using In-Situ Real Time Spectroscopic Ellipsometry

  Levi, D. H., Nelson, B. P. & Perkins, J. D., 2002, p. 153-158. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Chemical Vapor Deposition 100%
  • Film Growth 42%
  • Tennessine 42%
  • Nucleation 28%
  4 Scopus Citations

• Narrow Gap a-SiGe:H Grown by Hot-Wire Chemical Vapor Deposition: Preprint

  Nelson, B., 2002. 22 p.

  Research output: Contribution to conference › Paper

  • Chemical Vapor Deposition 100%
  • Structural Heterogeneity 50%
  • Defect Density 25%
  • Film 25%
  • Photoluminescence 25%

• Photoconductivity Stability Improvement in Hydrogenated Amorphous Silicon by Ultraviolet Illumination

  Branz, H. M., Xu, Y., Heck, S., Wang, Q., Gao, W., Crandall, R. S. & Nelson, B. P., 2002, p. 453-458. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Hydrogenated Amorphous Silicon 100%
  • Red Light 100%
  • Photoconductivity 100%
  • Amorphous Silicon 100%
  • Photocurrent 50%

• Physical Properties of HWCVD Microcrystalline Silicon Thin Films

  Moutinho, H. R., Romero, M. J., Jiang, C. S., Xu, Y., Nelson, B. P., Jones, K. M., Mahan, A. H. & Al-Jassim, M. M., 2002, p. 1250-1253. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Seed Layer 100%
  • Thin Films 100%
  • Microcrystalline Silicon 100%
  • Dilution 100%
  • Crystal Structure 100%

• Properties of Cd and Zn Partial Electrolyte Treated CIGS Solar Cells

  Ramanathan, K., Hasoon, F. S., Smith, S., Mascarenhas, A., Al-Thani, H., Alleman, J., Ullal, H. S., Keane, J., Johnson, P. K. & Sites, J. R., 2002, p. 523-526. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Solar Cell 100%
  • Photovoltaics 100%
  • Film 100%
  • Density 33%
  • Photoluminescence 33%
  18 Scopus Citations

• Real Time Spectroscopic Ellipsometry of Amorphous Silicon Grown at High Deposition Rates by Hot-Wire CVD

  Nelson, B. P. & Levi, D. H., 2002, p. 159-164. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Amorphous Silicon 100%
  • Silane 100%
  • Chemical Vapor Deposition 100%
  • Optical Property 50%
  4 Scopus Citations

• Spectroscopic Cathodoluminescence Studies of the ZnTe:Cu Contact Process for CdS/CdTe Solar Cells

  Gessert, T. A., Romero, M. J., Johnston, S., Keyes, B. & Dippo, P., 2002, p. 535-538. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Observables 100%
  • Layer Thickness 100%
  • Solar Cell 100%
  • Electrical Measurement 100%
  • Cathodoluminescence 100%
  10 Scopus Citations

• Ultrafast Carrier Thermalization in Hydrogenated Amorphous Silicon

  Dexheimer, S. L., Zhang, C. P., Liu, J., Young, J. E. & Nelson, B. P., 2002, p. 269-274. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Hydrogenated Amorphous Silicon 100%
  • Amorphous Silicon 100%
  • Transients 50%
  • Sample Temperature 50%
  • Relaxation Process 50%
  9 Scopus Citations
• 2001

  Adsorption of Hydrogen on Carbon Single-Walled Nanotubes as Measured by the Volumetric Technique

  Parilla, P. A., Dillon, A. C., Gennett, T., Alleman, J. L., Jones, K. M. & Heben, M. J., 2001, p. A14361-A14366.

  Research output: Contribution to conference › Paper › peer-review

  • Single-Walled Carbon Nanotube 100%
  • Single-Walled Nanotube 100%
  • Nanotubes 100%
  • Dopants 33%
  • Vaporization 33%
  7 Scopus Citations

• Determination of the Mobile-Hydrogen Charge State in Hydrogenated Amorphous Silicon

  Nelson, B. P., Xu, Y., Reedy, R. C., Crandall, R. S., Harv Mahan, A. & Branz, H. M., 2001, p. A2821-A2826.

  Research output: Contribution to conference › Paper › peer-review

  • Hydrogenated Amorphous Silicon 100%
  • Charge State 100%
  • Hydrogen Charge 100%
  • Hydrogen 100%
  • Amorphous Silicon 100%
  2 Scopus Citations

• Evaluating the Purity of Single-Wall Nanotube Materials

  Dillon, A. C., Gennett, T., Parilla, P. A., Alleman, J. L., Jones, K. M. & Heben, M. J., 2001, p. A521-A526.

  Research output: Contribution to conference › Paper › peer-review

  • Nanotubes 100%
  • Nanotube 100%
  • Scanning Electron Microscopy 22%
  • Illustrates 11%
  • Vaporization 11%
  11 Scopus Citations

• Evidence for Long-Range Hydrogen Motion in a-Si:H under Room-Temperature Illumination Using Raman Scattering of Amorphous Tungsten Oxide Overlayer

  Cheong, H. M., Lee, S. H., Nelson, B., Mascarenhas, A. & Deb, S. K., 2001, p. A2851-A2856.

  Research output: Contribution to conference › Paper › peer-review

  • Tungsten 100%
  • Oxide Compound 100%
  • Room Temperature 100%
  • Raman Spectra 100%
  • Solar Cell 50%

• Interface Investigation of ZnO/CdS/CuIn1-xGaxSe2/Mo Solar Cells

  Hasoon, F. S., Al-Thani, H. A., Jones, K. M., Yan, Y., Moutinho, H. R., Young, M., Asher, S. E., Alleman, J., Bhattacharya, R., Ramanathan, K., Keane, J. & Al-Jassim, M. M., 2001, p. H681-H687.

  Research output: Contribution to conference › Paper › peer-review

  • Solar Cell 100%
  • Electronic Circuit 100%
  • ZnO 100%
  • Density 50%
  • Surface (Surface Science) 50%
  2 Scopus Citations

• Rapid, Room Temperature, High-Density Hydrogen Adsorption on Single-Walled Carbon Nanotubes at Atmospheric Pressure Assisted by a Metal Alloy

  Heben, M. J., Dillon, A. C., Gennett, T., Alleman, J. L., Parilla, P. A., Jones, K. M. & Hornyak, G. L., 2001, p. A911-A9111.

  Research output: Contribution to conference › Paper › peer-review

  • Single-Walled Carbon Nanotube 100%
  • Single-Walled Nanotube 100%
  • Alloy 100%
  • Room Temperature 100%
  • Atmospheric Pressure 100%
  8 Scopus Citations
• 2000

  Anisotropy in Hydrogenated Silicon Thin Films

  Webb, J. D., Nelson, B. P., Mahan, A. H., Theisen, J., Reedy, R., Perkins, J. D. & Gedvilas, L. M., 2000, p. A1641-A1646.

  Research output: Contribution to conference › Paper › peer-review

  • Conductive 100%
  • Deposited Film 100%
  • Thin Films 100%
  • Film 100%
  • Silicon 100%

• Microstructural Properties of the Surface of Cu(In,Ga)Se2 Thin Films

  Hasoon, F. S., Yan, Y., Jones, K. M., Althani, H., Alleman, J., Al-Jassim, M. M. & Noufi, R., 2000, p. 513-516. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Structural Property 100%
  • Surface (Surface Science) 100%
  • Thin Films 100%
  • Density 50%
  5 Scopus Citations

• Small-Angle Neutron Scattering from Device-Quality a-Si:H and a-Si:D Prepared by PECVD and HWCVD

  Williamson, D. L., Marr, D. W. M., Nelson, B. P., Iwaniczko, E., Yang, J., Yan, B. & Guha, S., 2000, p. A1621-A1626.

  Research output: Contribution to conference › Paper › peer-review

  • Vapor Deposition 100%
  • Chemical Vapor Deposition 100%
  • Plasma Enhanced Chemical Vapor Deposition 100%
  • Film 100%
  • Small-Angle Neutron Scattering 100%
  2 Scopus Citations
• 1999

  Anisotropy in Hydrogenated Amorphous Silicon Films as Observed Using Polarized FTIR-ATR Spectroscopy

  Webb, J. D., Gedvilas, L. M., Grand All, R. S., Iwaniczko, E., Nelson, B. P., Mahan, A. H., Reedy, R. & Maison, R. J., 1999, p. 311-316. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Amorphous Silicon 100%
  • Anisotropy 100%
  • Silicon 25%
  • Secondary Ion Mass Spectrometry 12%
  6 Scopus Citations

• Assessment of Intrinsic-Layer Growth Temperature to High-Deposition-Rate a-Si:H n-i-p Solar Cells Deposited by Hot-Wire CVD

  Wang, Q. I., Iwantczko, E., Yueqin, X. U., Nelson, B. P. & Mahan, A. H., 1999, p. 163-168. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • High Deposition Rate 100%
  • Intrinsic Layer 100%
  • Growth Temperature 100%
  • Chemical Vapor Deposition 100%
  • Solar Cell 100%
  18 Scopus Citations

• H Out-Diffusion and Device Performance in n-i-p Solar Cells Utilizing High Temperature Hot Wire a-Si:H i-Layers

  Mahan, A. H., Reedy, R. C., Iwaniczko, E., Wang, Q., Nelson, B. P., Xu, Y., Gallagher, A. C., Branz, H. M., Crandall, R. S., Yang, J. & Guha, S., 1999, p. 119-124. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Low-Temperature 100%
  • Device Performance 100%
  • Fill Factor 100%
  • Substrate Temperature 100%
  • Voltage Drop 100%
  19 Scopus Citations

• Hydrogenated Amorphous Silicon Germanium Alloys Grown by the Hot-Wire Chemical Vapor Deposition Technique

  Nelson, B. P., Xu, Y., Williamson, D. L., Von Roedern, B., Mason, A., Heck, S., Mahan, A. H., Schmitt, S. E., Gallagher, A. C., Webb, J. & Reedy, R., 1999, p. 447-452. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Amorphous Silicon 100%
  • Plasma-Enhanced Chemical Vapor Deposition 100%
  • Chemical Vapor Deposition 100%
  • Si-Ge Alloys 100%
  • Hydrogenated Amorphous Silicon 100%
  25 Scopus Citations

• Influence of Electrons from the Filament on the Material Properties of Hydrogenated Amorphous Silicon Grown by the Hot-Wire Chemical Vapor Deposition Technique

  Nelson, B. P., Wang, Q., Iwaniczko, E., Mahan, A. H. & Crandall, R. S., 1999, p. 927-932. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Conductive 100%
  • Hydrogenated Amorphous Silicon 100%
  • Chemical Vapor Deposition 100%
  • Vapor Deposition 100%
  • Film 100%
  14 Scopus Citations

• Low Hydrogen Content, High Quality Hydrogenated Amorphous Silicon Grown by Hot-Wire CVD

  Nelson, B. P., Grand All, R. S., Mahan, E. I. A. H., Wang, Q. I., Yueqin, X. U. & Gao, W. E. I., 1999, p. 97-102. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Amorphous Silicon 100%
  • Chemical Vapor Deposition 100%
  • Defect Density 14%
  • Silane 14%
  15 Scopus Citations

• Nanoparticle Precursors for Electronic Materials

  Ginley, D. S., Curtis, C. J., Ribelin, R., Alleman, J. L., Mason, A., Mjones, K., Maison, R. J., Khaselev, O. & Schulz, D. L., 1999, p. 237-244. 8 p.

  Research output: Contribution to conference › Paper › peer-review

  • Electronic Materials 100%
  • Nanoparticle 100%
  • Sintering 100%
  • Compound Semiconductor 33%
  • Elemental Semiconductor 33%
  4 Scopus Citations
• 1998

  Grain Enhancement of Polycrystalline Silicon Films Aided by Optical Excitation

  Sopori, B. L., Chen, W., Alleman, J., Matson, R., Ravindra, N. M. & Tan, T. Y., 1998, p. 95-100. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Solar Cell 100%
  • Film 100%
  • Silicon 100%
  • Film Thickness 100%
  • Grain Size 100%
  1 Scopus Citations
• 1997

  CIGS Films via Nanoparticle Spray Deposition: Attempts at Densifying a Porous Precursor

  Schulz, D. L., Curtis, C. J., Cram, A., Alleman, J. L., Mason, A., Matson, R. J., Perkins, J. D. & Ginley, D. S., 1997, p. 483-486. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Film 100%
  • Spray Forming 100%
  • Nanoparticle 100%
  • Annealing 25%
  • Scanning Electron Microscopy 25%
  8 Scopus Citations

• Grain Enhancement of Thin Silicon Layers Using Optical Processing

  Sopori, B. L., Alleman, J., Chen, W., Tan, T. Y. & Ravindra, N. M., 1997, p. 419-424. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Low-Temperature 100%
  • Thin Layer 100%
  • Silicon Layer 100%
  • Poly-Si Grain 100%
  • Fine Grain 100%
  5 Scopus Citations

• Influence of Na on the Electro-Optical Properties of Cu(In,Ga)Se2

  Keyes, B. M., Hasoon, F., Dippo, P., Balcioglu, A. & Abulfotuh, F., 1997, p. 479-482. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Thin Layer 100%
  • Beneficial Effect 100%
  • Thin Films 100%
  • Minority Carriers 100%
  • Polycrystalline 100%
  40 Scopus Citations
• 1996

  18.2% (AM1.5) Efficient GaAs Solar Cell on Optical-Grade Polycrystalline Ge Substrate

  Venkatasubramanian, R., O'Quinn, B. C., Hills, J. S., Sharps, P. R., Timmons, M. L., Hutchby, J. A., Field, H., Ahrenkiel, R. & Keyes, B., 1996, p. 31-36. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Gallium Arsenide 100%
  • Ge Substrate 100%
  • Polycrystalline 100%
  • Solar Cell 100%
  • Aluminum Gallium Arsenide 100%
  67 Scopus Citations

• Enhanced Mo Adhesion on Glass with Cr Interlayers for Copper Indium Diselenide Thin Film Devices

  Alleman, J., Ginley, D., Hasoon, F., Asher, S. & Noufi, R., 1996, p. 195-199. 5 p.

  Research output: Contribution to conference › Paper › peer-review

  • Thin Films 100%
  • Interlayer 100%
  • Film 100%
  • Indium 100%
  • Gallium 40%
  3 Scopus Citations

• Hot Wire Deposited Hydrogenated Amorphous Silicon Solar Cells

  Mahan, A. H., Iwaniczko, E., Nelson, B. P., Reedy, R. C., Crandall, R. S., Guha, S. & Yang, J., 1996, p. 1065-1068. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Device Performance 100%
  • Hydrogenated Amorphous Silicon 100%
  • Amorphous Silicon Solar Cell 100%
  • Solar Cell 100%
  • Amorphous Silicon 100%
  14 Scopus Citations
• 1994

  Micro Through Nanostructure Investigations of Polycrystalline CdTe: Correlations with Processing and Electronic Structures

  Levi, D. H., Moutinho, H. R., Hasoon, F. A., Keyes, B. M., Ahrenkiel, R. K., Al-Jassim, M. & Kazmerski, L. L., 1994, p. 127-131. 5 p.

  Research output: Contribution to conference › Paper › peer-review

  • Nanomaterial 100%
  • Thin Films 100%
  • Polycrystalline 100%
  • Physical Structure 100%
  • Electronic State 100%
  18 Scopus Citations
• 1993

  Grain Boundary and Dislocation Effects on the PV Performance of High-Purity Silicon

  Ciszek, T. F., Wang, T. H., Burrows, R. W., Wu, X., Alleman, J., Bekkedahl, T. & Tsuo, Y. S., 1993, p. 101-105. 5 p.

  Research output: Contribution to conference › Paper › peer-review

  • Photovoltaic Performance 100%
  • Mm Diameter 100%
  • Silicon 100%
  • Grain Size 100%
  • Grain Boundary 100%
  10 Scopus Citations

• Hydrogen Diffusion Mechanism in Amorphous Silicon from D Tracer Diffusion: Theory and Experiment

  Branz, H. M., Asher, S., Nelson, B. P. & Kemp, M., 1993, p. 279-284. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Earliest Time 100%
  • Diffusion Mechanism 100%
  • Release Time 100%
  • Diffusion Coefficient 100%
  • Diffusion Equation 100%
  5 Scopus Citations

• Recombination Effects at Oxygen Related Double Acceptors in Al0.10Ga0.90As

  Ahrenkiel, R. K., Zhang, J., Keyes, B. M., Asher, S. E. & Timmons, M. L., 1993, p. 712-716. 5 p.

  Research output: Contribution to conference › Paper › peer-review

  • Transients 100%
  • Deep Level 100%
  • Recombination Centre 100%
  • Capture Cross Section 100%
  • Double Acceptor 100%
  1 Scopus Citations

• Recombination Lifetime and Performance of III-V Compound Photovoltaic Devices

  Ahrenkil, R. K., Keyes, B. M., Durbin, S. M. & Gray, J. L., 1993, p. 42-51. 10 p.

  Research output: Contribution to conference › Paper › peer-review

  • Photovoltaics 100%
  • Recombination Lifetime 100%
  • Compound Photovoltaics 100%
  • Silicon 100%
  • Epitaxial Growth 100%
  9 Scopus Citations

• Solar Cell Structures Combining Amorphous, Microcrystalline, and Single-Crystalline Silicon

  Tsuo, Y. S., Wu, X., Alleman, J. L., Li, X., Qu, Y. & Ciszek, T. F., 1993, p. 281-286. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Crystalline Silicon 100%
  • Microcrystalline 100%
  • Solar Cell 100%
  • Junction Solar Cell 50%
  • Si Substrate 50%
  3 Scopus Citations
• 1992

  Minority-Carrier Lifetime of Polycrystalline CdTe in Cds/CdTe Solar Cells

  Ahrenkiel, R. K., Keyes, B. M., Wang, L. & Albright, S. P., 1992, p. 940-945. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Carrier Lifetime 100%
  • Minority Carriers 100%
  • Polycrystalline 100%
  • Solar Cell 100%
  • Air Masses 50%
  16 Scopus Citations

• Modeled Performance of Monolithic, 3-Terminal InP/Ga0.47In0.53As Concentrator Solar Cells as a Function of Temperature and Concentration Ratio

  Osterwald, C. R., Wanlass, M. W., Ward, J. S., Keyes, B. M., Emery, K. A. & Coutts, T. J., 1992, p. 216-219. 4 p.

  Research output: Contribution to conference › Paper › peer-review

  • Concentration Ratio 100%
  • Solar Cell 100%
  • Series Resistance 25%
  • Tandem Cell 25%
  • Numerical Model 25%

• TEM and PL Characterization of GaAs and ZnSe/ZnCdSe Grown on Si

  Al-Jassim, M. M., Jones, K. M., Ahrenkiel, S. P., Keyes, B. M., Vernon, S. M., Karam, N. H. & Furdyna, J., 1992, p. 626-628. 3 p.

  Research output: Contribution to conference › Paper › peer-review

  • Gallium Arsenide 100%
  • Photoluminescence 20%
  • Transmission Electron Microscopy 20%
  • Si Substrate 20%
• 1990

  Design of High Efficiency Solar Cells by Photoluminescence Studies

  Ahrenkiel, R. K., Dunlavy, D. J., Keyes, B. M., Vernon, S. M., Tobin, S. P. & Dixon, T. M., May 1990, p. 432-436. 5 p.

  Research output: Contribution to conference › Paper › peer-review

  • Solar Cell 100%
  • Interface Recombination 66%
  • Growth Process 33%
  • Gallium Arsenide 33%
  • Junction Solar Cell 33%
  8 Scopus Citations

• Experimental Study of Solar Cell Performance Versus Dislocation Density

  Vernon, S. M., Tobin, S. P., Al-Jassim, M. M., Ahrenkiel, R. K., Jones, K. M. & Keyes, B. M., May 1990, p. 211-216. 6 p.

  Research output: Contribution to conference › Paper › peer-review

  • Gallium Arsenide 100%
  • Dislocation Density 100%
  • Cell Performance 100%
  • Solar Cell 100%
  • Density 100%
  13 Scopus Citations