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8 Result(s)

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  1. No Access

    Article

    Heating of a degenerate electron ensemble in a well of compound semiconductors at low lattice temperatures

    At low lattice temperatures, an ensemble of electrons exhibits some specific features which are hardly observed for higher lattice temperatures. Considering a two-dimensional ensemble of non-equilibrium electr...

    B. Roy, S. Bhattacharyya, D. P. Bhattacharya in Applied Physics A (2019)

  2. No Access

    Article

    Tuning Between Quantum-Dot- and Quantum-Well-Like Behaviors in Type II ZnTe Submonolayer Quantum Dots by Controlling Tellurium Flux During MBE Growth

    We report tuning of properties of type II nanostructures between quantum dot (QD)-like and quantum well (QW)-like behaviors in ZnSe layers with ZnTe submonolayer insertions, grown by migration-enhanced epitaxy...

    H. Ji, B. Roy, S. Dhomkar, R. T. Moug, M. C. Tamargo… in Journal of Electronic Materials (2013)

  3. No Access

    Article

    Effect of salt composition on photovoltaic performance of the dye-sensitized solar cells prepared from nano anatase TiO2 powder using NaCl–Na2HPO4·2H2O salt matrices

    Photovoltaic performances of dye-sensitized solar cells based on mesoporous TiO2 coating of nanocrystalline anatase prepared by solid salt synthesis were investigated in this study. Three different salt compositi...

    B. Roy, L. Li, S. Aich in Journal of Materials Science (2011)

  4. No Access

    Article

    Grain Nucleation and Grain Growth During Crystallization of HWCVD a-Si:H Films

    Hydrogenated amorphous silicon (a-Si:H) films of high and low hydrogen content were deposited directly on molybdenum, carbon-coated TEM grids by hot-wire chemical vapor deposition. The material was annealed at...

    S. P. Ahrenkiel, B. Roy, A. H. Mahan, D. S. Ginley in MRS Online Proceedings Library (2011)

  5. No Access

    Article

    Two-step annealing of hot wire chemical vapor deposited a-Si:H films

    A two-step annealing process was used to investigate the effect of dehydrogenation on crystallization and grain growth of low and high hydrogen content hot wire chemical vapor deposited (HWCVD) a-Si:H films. A...

    B. Roy, R. C. Reedy, D. W. Readey in Journal of Materials Science: Materials in Electronics (2008)

  6. No Access

    Article

    Influence of microalloying on mechanical and metallurgical properties of wear resistant coach and wagon wheel steel

    Micro alloy steels are emerging as a potential new material to replace conventional carbon steels to achieve longer coach and wagon wheel life. Two commercial heats of micro alloy steels were made and processe...

    U. P. Singh, A. M. Popli, D. K. Jain, B. Roy… in Journal of Materials Engineering and Perfo… (2003)

  7. No Access

    Article

    Electrical Characteristics of Chemical Solution Deposited Nd3+ Doped PZT (53/47) Thin Films in Planar Electrode Configuration

    Electrical characteristics of ferroelectric thin films in planar electrode configuration are important to characterize these materials for their applications in micro electro mechanical (MEM) and tunable micro...

    S.B. Majumder, B. Perez, B. Roy, A. Martinez… in MRS Online Proceedings Library (2000)

  8. No Access

    Article

    Structural and Electrical Characterization of Rare Earth Doped Pb0.85La0.15TiO3 Ferroelectric Thin Films

    Rare earth (Gd+3 and Ce+3) substitution on La+3 sites of the sol-gel prepared Pb0.85La0.15TiO3 films is studied using x-ray diffraction, atomic force microscopy, Raman scattering, and electrical characterization ...

    P. S. Dobal, R. R. Das, B. Roy, R. S. Katiyar, S. Jain… in MRS Online Proceedings Library (1999)