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  • A study of deep levels of AlGaAs/GaAs heterojunction bipolar transistors

    Creator:
    Huang, Chun-ta
    Abstract:
    A study of deep levels of the emitter region of a heterojunction bipolar transistor is investigated using deep level transient spectroscopy (DLTS), deep level admittance spectroscopy (DLAS), thermally stimulated capacitance (TSCAP), and capacitance-voltage (C-V) profiling. The DX center, with an activation energy of 0.45 eV, is the only deep level...
    Resource Type:
    Masters Thesis
    Full Text:
    Oregon State University in partial fulfillment of the requirements for the degree of Master of

  • Atomic solid state energy scale applied to novel thin-film solar absorbers

    Creator:
    Pelatt, Brian D.
    Abstract:
    The atomic solid state energy (SSE) scale is introduced as a tool for inorganic materials design. The SSE scale is obtained by assessing an average electron affinity (EA) (for a cation) or an average ionization potential (IP) (for an anion) for each atom using data from compounds having that specific...
    Resource Type:
    Dissertation
    Full Text:
    Solar Absorbers by Brian D. Pelatt A DISSERTATION submitted to Oregon State University in partial

  • An n-sheet, state-space ACTFEL device model

    Creator:
    Hitt, John C.
    Abstract:
    The objective of the research presented in this thesis is to develop, implement, and demonstrate the utility of an n-sheet, state-space alternating-current thin-film electroluminescent (ACTFEL) device model. In this model, the phosphor layer is discretized into n + 1 layers, with band-to-band impact ionization, space charge creation/ annihilation, and luminescent...
    Resource Type:
    Dissertation
    Full Text:
    ACTFEL Device Model by John C. Hitt A DISSERTATION submitted to Oregon State University in partial

  • State space modeling of alternating-current thin-film electroluminescent devices

    Creator:
    Peery, Jeffrey B.
    Resource Type:
    Masters Thesis
    Full Text:
    Peery A THESIS submitted to Oregon State University in partial fulfillment of the

  • Improved stability in ACTFEL devices

    Creator:
    Khormaei, Iranpour
    Abstract:
    The stability of ZnS:Mn AC thin film Electroluminescence (ACEFEL) devices as demonstrated by the brightness-voltage (BV) characteristics is discussed. Two procedures for improvement of the stability are demonstrated. The first method is the addition of a CaS buffer layer to one or both interfaces of the ZnS active phosphor layer....
    Resource Type:
    Masters Thesis
    Full Text:
    State University in partial fulfillment of the requirements for the degree of Master of Science

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

    Creator:
    Norris, Benjamin J.
    Abstract:
    The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...
    Resource Type:
    Dissertation
    Full Text:
    Transparent Thin-Film Transistors by Benjamin J. Norris A DISSERTATION submitted to Oregon State

  • Assessment of High Mobility Oxide Thin-Film Transistors

    Creator:
    Stewart, Kevin A.
    Abstract:
    The trend towards higher resolution, faster refresh rate active-matrix liquid-crystal displays (AMLCDs) as well as the emergence of active-matrix organic light-emitting diode (AMOLED) displays is driving the demand for amorphous oxide semiconductor thin-film transistors (AOS TFTs) with higher mobility. A physics-based model for carrier transport in an amorphous semiconductor is...
    Resource Type:
    Dissertation
    Full Text:
    Oregon State University in partial fulfillment of the requirements for the degree of Doctor of

  • Fabrication and characterization of ACTFEL devices

    Creator:
    Keir, Paul D.
    Abstract:
    The goal of this thesis is the identification and synthesis of high-luminance, primary color alternating-current thin-film electroluminescent (ACTFEL) devices. Special attention is paid to the synthesis of primary color green ACTFEL devices because of the lack of an adequate primary green ACTFEL phosphor and the dominance of green wavelengths in...
    Resource Type:
    Dissertation
    Full Text:
    submitted to Oregon State University in partial fiillillment of the requirements for the degree of

  • Development of zinc tin oxide-based transparent thin-film transistors

    Creator:
    Chiang, Hai Q.
    Abstract:
    The focus of this thesis involves development of highly transparent, n-channel, accumulation- mode thin-film transistors employing a zinc tin oxide (ZTO) channel layer. ZTO-based transparent thin-film transistors (TTFTs) show improved device performance compared to ZnO-based TTFTs. An estimated peak effective mobility for these devices as high as ~100 cm² V⁻¹sec⁻¹...
    Resource Type:
    Masters Thesis
    Full Text:
    Transistors by Hai Q. Chiang A THESIS submitted to Oregon State University in partial fulfillment of the

  • Electrical characterization of n-type aluminum gallium arsenide

    Creator:
    Kim, Seung-bae
    Resource Type:
    Dissertation
    Full Text:
    submitted to Oregon State University in partial fulfillment of the requirements for the degree of Doctor