Sökning: "Native defects"

Visar resultat 1 - 5 av 27 avhandlingar innehållade orden Native defects.

  1. 1. Defects and Impurities in CdTe : An ab Initio Study

    Författare :Anna Lindström; Mattias Klintenerg; Susanne Mirbt; Biplab Sanyal; Peter Zahn; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Native defects; Compensation mechanisms; Semiconductor doping; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Sammanfattning : In this thesis defects and impurities in CdTe have been studied with ab initio methods. CdTe is a II-VI semiconductor with many important applications such as γ- and X-ray detectors, solar cells and medical imaging. LÄS MER

  3. 2. Defects in Bismuth Vanadate: Insights from First Principles

    Författare :Nicklas Österbacka; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; defects; oxides; semiconductors; density functional theory;

    Sammanfattning : Photoelectrochemical water splitting is an attractive technique for sustainable hydrogen production, but its efficiency is heavily dependent on the properties of the semiconducting photoelectrodes used in the process. These properties are intimately connected to the presence of point defects in the materials, and understanding this relationship is a key step towards the development of better photoabsorbers. LÄS MER

  4. 3. Electronic Structure Calculations of Point Defects in Semiconductors

    Författare :Andreas Höglund; Susanne Mirbt; Alison Mainwood; Uppsala universitet; []
    Nyckelord :Physics; electronic structure calculations; point defects; semiconductor; formation energy; equilibrium solubility limit; thermodynamic equilibrium concentration; transfer levels; negative-U; 110 surface; diffusion; activation energy; solar cells; Fysik;

    Sammanfattning : In this thesis point defects in semiconductors are studied by electronic structure calculations. Results are presented for the stability and equilibrium concentrations of native defects in GaP, InP, InAs, and InSb, for the entire range of doping conditions and stoichiometry. LÄS MER

  5. 4. Electronic structure calculations of native defects and impurities in III-V semiconductors

    Författare :Andreas Höglund; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Study of solid oxide systems from first principles calculations : energetics and magnetic properties of native defects and dopants in ZrO2 and MgO

    Författare :Cecilia Århammar; Rajeev Ahuja; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER