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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Thin film transistors from II-IV semiconductors on polymer substrates

MacNab, Finlay. January 2006 (has links)
A chemical bath deposition technique has been used in the fabrication of thin film transistors (TFT), which have been deposited on a 200mum polymer substrate. This thesis documents the chemistry and microfabrication techniques used to create the TFTs. Because TFTs have not been fabricated on plastics in this manner before, insights gained from understanding the mechanical properties of the polymer, and how these interact with those of the inorganic components of the TFTs, were used to guide development of processes specifically suited to adapt the polymer to TFT fabrication.
102

Nucleation and Equilibration via Surface Diffusion: An Experimental Study

McCarthy, David Norman January 2008 (has links)
Structures grown via self-assembly are a unique field in nanotechnology. The morphology of self-assembled structures is affected by the balance between kinetics and thermodynamics during growth. Hence structures with tailored morphologies and properties can be created with adjustments in growth conditions. In this thesis we study crystal nucleation and equilibration, for both real and model systems. The growth of thin bismuth films is investigated on three atomically flat surfaces; Mica, Molybdenum di Sulphide, and highly oriented pyrolitic graphite (HOPG). Films are grown under UHV conditions, and characterised using scanning electron microscopy and atomic force microscopy. For coverages of only a few monolayers, bismuth particles are found to aggregate into flat, isolated islands. Islands have characteristic heights and morphologies for each substrate. By altering the deposition flux and coverage, the island density and morphology can be manipulated. On HOPG substrates, planar islands grown at low flux are replaced by 1D structures at high temperature. These anisotopic structures result from an anisotropy in bond strengths at the crystal-vapour interface. Depositing Bi on HOPG substrates at low flux or high temperature conditions produces nanorods aligned (roughly) perpendicular to step edges on the graphite. The aspect ratios (ARs) of these 1D structures are found to increase as the deposition flux is lowered, or the substrate temperature is increased. The Arrhenius dependence of the AR is determined from experiment. A Kinetic Monte Carlo (KMC) model for high AR step-edge aggregates was developed, determining the likely growth mechanism for the nanorods. A scaling regime devised from the KMC results predicts the dependence of nanorod ARs on flux and temperature, and allows an estimation of the energy binding Bi dimers to the sides of nanorods. Thin films can also be grown via the self-assembly of atomic clusters. After deposition coalescence of clusters has implications for the film morphology, and properties. We use KMC simulations to investigate the coalescence of pairs of 3D atomic clusters (15000 to 130000 atoms in size) via lattice based surface diffusion. For early coalescence stages, the radius of the neck region connecting the two clusters is found to develop with a different powerlaw to classical theory. For later coalescence stages, when the nucleation of new atomic layers on facets of the cluster is required for further coalescence the temperature, cluster size, and cluster orientation all influence the coalescence. Equilibration times for clusters coalescing at high temperature are found to be limited by the dissociation of atomic layers.
103

Improvement of metal induced crystallization process and novel post-annealing technologies /

Zhang, Bo. January 2008 (has links)
Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references. Also available in electronic version.
104

Formation of low temperature silicon dioxide films using chemical vapor deposition /

Chen, Hsiao-Hui. January 1991 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1991. / Typescript. Includes bibliographical references (leaves 165-168).
105

Development of bulk-scale and thin-film magnetostrictive sensor

Liang, Cai, Prorok, Barton Charles. January 2007 (has links) (PDF)
Dissertation (Ph.D.)--Auburn University, 2007. / Abstract. Vita. Includes bibliographic references (p.202-231).
106

Low-cost deposition methods for transparent thin-film transistors /

Norris, Benjamin J. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2004. / Typescript (photocopy). Includes bibliographical references (leaves 148-158). Also available on the World Wide Web.
107

P-type transparent electronics /

Valencia, Melinda Marie. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2004. / Typescript (photocopy). Includes bibliographical references (leaves 73-77). Also available on the World Wide Web.
108

Microfabrication and evaluation of planar thin-film microfluidic devices /

Peeni, Bridget A. January 2006 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Chemistry and Biochemistry, 2006. / Includes bibliographical references.
109

Metastability of copper indium gallium diselenide polycrystalline thin film solar cell devices /

Lee, Jinwoo, January 2008 (has links)
Thesis (Ph. D.)--University of Oregon, 2008. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 112-117). Also available online in Scholars' Bank; and in ProQuest, free to University of Oregon users.
110

Development of oxide semiconductors : materials, devices, and integration /

Chiang, Hai Q. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 138-150). Also available on the World Wide Web.

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