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Filtering by: Subject Thin films -- Electric properties Remove constraint Subject: Thin films -- Electric properties Decade 2000-2009 Remove constraint Decade: 2000-2009 Peer Reviewed No Remove constraint Peer Reviewed: No

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  • Development of perovskite thin films for use in piezoelectric based microelectromechanical systems

    Creator:
    Shelton, Christopher T.
    Abstract:
    The lead-zirconate-titanate (PZT) solid solution system is currently the workhorse of piezoelectric-based microelectromechanical systems (MEMS) research. Among bulk materials it is known to be one of the strongest piezoelectrics, with extremely high piezoelectric coefficients and electro-mechanical coupling factors. Reproducing these exceptional qualities in thin film form, however, requires precise tuning...
    Resource Type:
    Masters Thesis
    Full Text:
    - property relationships in the most widely used piezoelectric thin film, the perovskite Pb(Zr,Ti)O3. The

  • Electrochemical deposition of thin film CuGaSe₂ for photovoltaics

    Creator:
    Permanasari, Rina
    Abstract:
    CuGaSe₂/CuInSe₂ tandem junction solar cell is currently being pursued to be a low cost and high efficiency renewable energy source. A reported theoretical efficiency of 33.9% solar cells has been the motivation to fabricate CuGaSe₂ films in a simple and low cost method. Electrodeposition is a potentially suitable method to...
    Resource Type:
    Masters Thesis
    Full Text:
    Deposition of Thin Film CuGaSe2 for Photovoltaics. Abstract approved: hung Chang CuGaSe2/CuInSe2 tandem

  • Magneto-crystalline anisotropy calculation in thin films with defects

    Creator:
    Matusevich, David Sergio
    Abstract:
    The code is developed for the calculation of the magneto-crystalline anisotropy (MAE) in thin films using a classical Heisenberg hamiltonian with a correction developed by Van Vleck. A Metropolis style Monte Carlo algorithm was used with adequate corrections to accelerate the calculation. The MAE was calculated for the case of...
    Resource Type:
    Dissertation
    Full Text:
    case of a thin film with an increasing number of defects on the top layer for the cases where the

  • Electrically tunable thin-film inductors based on synthetic antiferromagnet cores

    Creator:
    An, Na
    Abstract:
    The objective of this research is to demonstrate the feasibility of implementing electrically tunable on-chip inductors based on synthetic antiferromagnet (SAF) cores. This thin film magnetic core is made of a magnetic bi-layer antiferromagnetically coupled through a nonmagnetic spacer layer. An energy model is developed to investigate the magnetic behavior...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3 Electrically Tunable Thin Film Magnetic Core 15 3.1 Synthetic Antiferromagnet Structure

  • Transparent electronics : thin-film transistors and integrated circuits

    Creator:
    Presley, Rick E.
    Abstract:
    This thesis focuses on two aspects of transparent electronics, SnO₂ transparent thin-film transistors (TTFTs) and transparent circuits. Both depletion- and enhancement-mode SnO₂ TTFTs are realized. The maximum effective mobility for the depletion- and enhancement-mode devices are 2 cm²V⁻¹s⁻¹ and 0.8 cm²V⁻¹s⁻¹, respectively. A variety of techniques to decrease the carrier...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Transparent Electronics: Thin-Film Transistors and Integrated Circuits Abstract approved: John

  • XAFS investigation of the local structure of cadmium in Cu(In[subscript 0.7]Ga[subscript 0.3])Se₂-based thin films

    Creator:
    Ma, Giang N.
    Abstract:
    We have performed fluorescence extended X-ray absorption fine structure (EXAFS) measurements on the Cd K-edge of partial electrolyte (PE) treated Cu(In[subscript 0.7]Ga[subscript 0.3])Se₂ (CIGS) thin film samples using synchrotron X-ray radiation. This data was compared to the EXAFS spectra of CdSe and CdO standards. Cd local structure models were constructed...
    Resource Type:
    Masters Thesis
    Full Text:
    partial electrolyte (PE) treated Cu(1n07Ga03)Se2 (CIGS) thin film samples using synchrotron X-ray

  • Transport properties of CuSc₁₋(subscript x)Mg(subscript x)O₂₊(subscript y) and BaCu₂S₂ transparent semiconductors

    Creator:
    Kykyneshi, Robert
    Abstract:
    Bulk properties of CuSc₁₋ₓMgₓO₂, CuSc₁₋ₓMgₓO₂₊y, BaCu₂S₂, Bai₁₋ₓKCu₂S₂, BaCu₂Se₂ and Bai₁₋ₓKₓCu₂Se₂ are investigated supporting the search for highly conductive p-type thin films. Mg is an efficient dopant in CuScO₂ with conductivity up to l.5.10⁻² S/cm. Oxidation of CuScO₂:Mg leads to further increase in conductivity up to 0.5 S/cm. The amount of...
    Resource Type:
    Masters Thesis
    Full Text:
    previously studied delafossite materials in the bulk and thin film forms 2 3.1. Density (% of theoretical

  • Constrained thin film desorption through membrane separation

    Creator:
    Thorud, Johnathan D.
    Abstract:
    A constrained thin film desorption scheme has been experimentally tested to determine the desorption rates for water from an aqueous lithium bromide mixture through a confining membrane. Variable conditions include the inlet concentration, pressure differential across the membrane, and channel height. Desorption takes place in a channel created between two...
    Resource Type:
    Masters Thesis
    Full Text:
    Thin Film Desorption Through Membrane Separation Abstract approved: James A. Liburdy A constrained

  • An experimental study of ammonia-water bubble absorption in a constrained microscale film

    Creator:
    Jenks, Jeromy W.
    Abstract:
    An experimental study of absorption of ammonia into a constrained thin film of ammonia-water solution is presented. A large aspect ratio microchannel with one of its walls formed by a porous material is used to constrain the thickness of the liquid film. Experiments were performed at a pressure of 1,...
    Resource Type:
    Masters Thesis
    Full Text:
    absorption of ammonia into a constrained thin film of ammonia-water solution is presented. A large aspect

  • Development, fabrication, and characterization of transparent electronic devices

    Creator:
    Hoffman, Randy L.
    Abstract:
    The objective of this thesis is to provide an initial demonstration of the feasibility of constructing highly transparent active electronic devices. Such a demonstration is successfully achieved in the fabrication of ZnO-based thin film transistors (TFTs) exhibiting transparency greater than ~90% in the visible portion of the electromagnetic spectrum and...
    Resource Type:
    Masters Thesis
    Full Text:
    the fabrication of ZnO-based thin film transistors (TFTs) exhibiting transparency greater than ''90