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Filtering by: Creator Moulton, Hong M. Remove constraint Creator: Moulton, Hong M. Subject Thin films Remove constraint Subject: Thin films

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  • Development of bi-based lead-free piezoelectric materials : thin film piezoelectric materials via PVD and CSD routes

    Creator:
    Jeon, Yu Hong
    Abstract:
    Piezoelectric materials have been widely used in electromechanical actuators, sensors, and ultrasonic transducers. Among these materials, lead zirconate titanate Pb(Zr[subscript 1‐x]Ti[subscript x])O₃ (PZT) has been primarily investigated due to its excellent piezoelectric properties. However, environmental concerns due to the toxicity of PbO have led to investigations into alternative materials systems....
    Resource Type:
    Dissertation
    Full Text:
    
 
 Yu
Hong
Jeon
for
the
degree
of
Doctor
of
Philosophy
in
Materials
Science
 presented
on
September
14

  • Growth, Characterization and Applications of Zinc Sulfide Thin Films by Solution-Based Processes

    Creator:
    Chiu, Dick
    Abstract:
    Zinc Sulfide (ZnS) thin film, with a wide band gap, has been used for many applications, such as buffer layer for CIGS solar cells, light emitting diodes and thin film electroluminescent devices. In this work, ZnS thin films were prepared using two different deposition processes. In the first method, ZnS...
    Resource Type:
    Dissertation
    Full Text:
    . Greg Herman, Dr. Hong Liu, Dr. Bill Warnes, and Dr. Alexandre Yokochi, for their time and commitment

  • Solution deposition and characterization of the thin film inorganic materials

    Creator:
    Özmen, Bahar
    Abstract:
    The general emphasis of this work has been synthesis, characterization, and applications of n- and p-type inorganic oxide thin films that are deposited from solutions. In particular, a study of n-type transparent semiconductor films of tin (IV) oxide and zinc-doped tin (IV) oxide has been performed by spin coating. Solution...
    Resource Type:
    Masters Thesis
    Full Text:
    (II) formate tetrahydrate solutions in the concentrations of 0.4 M, 4.10-3 M and 4.10-4 M between

  • Copper and iron chalcogenides for efficient solar absorption

    Creator:
    Platt, Heather A. S.
    Abstract:
    This dissertation outlines two approaches for improving the efficiency and reducing the cost of photovoltaic energy generation. First, the structures of known binary copper and iron compounds are used to choose the promising compositions Fe₂XS₄ (X = Si, Ge), Cu₃TaQ₄ (Q = Se, Te), and BaCuQ'F (Q' = S, Se,...
    Resource Type:
    Dissertation
    Full Text:
    be added on top. A better route works with the natural hydrolysis [M(H2O)6] z+ + H2O → [M(H2O)5(OH

  • New luminescent materials and high-performance solution-processed oxide thin films

    Creator:
    Jiang, Kai
    Abstract:
    Crystals of an incongruent-melting compound, Ba₃MgSi₂O₈, were grown by the flux method and its structure was determined by single crystal X-ray diffraction methods. Ba₃MgSi₂O₈ crystallizes in trigonal space group P-3[bar]m1 with a = 5.6123(3) Å, c = 7.2667(9) Å and Z = 1. Eu²⁺ ions prefer one crystallographic Ba site...
    Resource Type:
    Dissertation
    Full Text:
    given temperatures, with each bilayer deposited from precursors of (A) 0.2 M TiO2, 0.12 M AlPO

  • Synthesis and characterization of Pb(Zr,Ti)O₃ thin films for microelectromechanical systems

    Creator:
    Brookshire, Kirsten L.
    Abstract:
    Pb(Zr,Ti)O₃ (PZT) is a very attractive material for use in piezoelectric-based microelectromechanical systems (MEMS) due to its high piezoelectric coefficients and ability for large displacements with relatively low applied fields (as compared to electrostatic-based MEMS). The piezoelectric effect is strongly anisotropic, thus it is very desirable to control the crystallographic...
    Resource Type:
    Masters Thesis
    Full Text:
    Patterson and Yu Hong Jeon, thank you for being such outstanding mentors. Without you both I would have

  • The chemistry and device applications of amorphous thin-film interfaces

    Creator:
    Knutson, Christopher C.
    Abstract:
    Solid-state amorphous materials show amazing promise in thin-film electronics. The interface-to-bulk ratio of thin films makes interfacial chemistries of these systems of utmost importance. Thin films of amorphous metals, dielectrics and semiconductors have novel chemistries that are not only based upon their elemental constituent makeup, but also based upon the...
    Resource Type:
    Dissertation
    Full Text:
    .; Hong, D.; Hung, C. M.; Wager, J. F.; Keszler, D. A. Chem. Mater. 2007, 19, 4023-4029. (25) Jiang

  • Atomic layer deposition of nanolaminate Al₂O₃-Ta₂O₅ and ZnO-SnO₂ films

    Creator:
    Smith, Sean Weston
    Abstract:
    Thin films are an enabling technology for a wide range of applications, from microprocessors to diffusion barriers. Nanolaminate thin films combine two (or more) materials in a layered structure to achieve performance that neither film could provide on its own. Atomic layer deposition (ALD) is a chemical vapor deposition technique...
    Resource Type:
    Masters Thesis
    Full Text:
    water used in ALD reactions was filtered to 18.5 MΩcm resistivity, on site. Two filtration systems

  • Functional materials for advanced energy and electronic devices

    Creator:
    Flynn, Brendan T.
    Abstract:
    Advances in energy technologies and electronics have typically occurred through either heightened performance or cost reduction. This dissertation explores both routes through a series of fundamental material studies that may contribute to the enabling of next generation devices. Solution based syntheses and deposition of chemical products offer a low cost...
    Resource Type:
    Dissertation
    Full Text:
    . James, and M. Woodhouse, “A wafer-based monocrystalline silicon photovoltaics road map: Utilizing

  • Sputtered Pb(Zr0.52Ti0.48)O3 (PZT) thin films on copper foil substrates, Sputtered Pb(Zr₀.₅₂Ti₀.₄₈)O₃ (PZT) thin films on copper foil substrates

    Creator:
    Walenza-Slabe, Joel
    Abstract:
    Pb(Zr₀.₅₂Ti₀.₄₈)O₃ (PZT) thin films are of interest for their large dielectric permittivity, ferroelectric, and piezoelectric properties. The material has been widely studied for use in high frequency transducers, multi-layered capacitors, and ferroelectric random access memory. Copper foils are an inexpensive, flexible substrate with a low resistivity which makes them ideal...
    Resource Type:
    Masters Thesis
    Full Text:
    thank (the now) Dr. Yu Hong Jeon for many helpful suggestions and discussions. It has been a great