Sökning: "Wide Band Gap materials"

Visar resultat 1 - 5 av 42 avhandlingar innehållade orden Wide Band Gap materials.

  1. 1. Optical characterization of wide band gap materials by spectroscopic ellipsometry

    Författare :O. P. Alexander Lindquist; Linköpings universitet; []
    Nyckelord :Wide Band Gap materials; ellipsometry; SiC; GaN;

    Sammanfattning : Spectroscopic ellipsometry has been employed in the study of wide band gap materials. Ellipsometry is based on the study of changes in the polarization state of light upon reflection on a surface. LÄS MER

  3. 2. Physical Properties of Ternary Metal Oxides and Carbon Nanomaterials Under Pressure

    Författare :Pablo Botella; Alberto Vomiero; Daniel Errandonea; Victor Lavin Della Ventura; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Experimentell fysik; Experimental Physics;

    Sammanfattning : Found in nature or synthesized, materials present amazing properties such as superconductivity, super-hardness, lightweight, or high-energy-density, among others. All these properties can be used in our benefit to improve or develop new applications. LÄS MER

  4. 3. Development and Characterisation of SiC Based Sensors for Harsh Environments

    Författare :Lars Unéus; Jacobus H. Visser; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The introduction of chemical gas sensors in our environment is a process that started many years ago. However, although the process has been rather slow over the years, the interest for chemical gas sensors is rising due to the growing environmental awareness. LÄS MER

  5. 4. Tailoring of Contacts on Silicon Carbide - Procedures and Mechanisms

    Författare :S. A. Perez-Garcia; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; interfacial reaction; metallic contacts; Silicon carbide; silicides; XPS.;

    Sammanfattning : Silicon carbide (SiC) exhibits very good electrical, thermal, chemical and mechanical properties which make it suitable for the next generation of wide band gap electronic devices, where silicon (Si) cannot be used due to its limitations with respect to the mentioned properties. Nickel (Ni) and Tantalum (Ta) are among the metals used for the contact formation. LÄS MER

  7. 5. Atomic scale modeling of ordering phenomena in inorganic clathrates

    Författare :Mattias Ångqvist; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; ordering phenomena; Cluster expansion; Monte Carlo; Inorganic clathrates;

    Sammanfattning : Ordering phenomena in materials often have a crucial impact on materials properties. They are governed by the competition between entropy and energy. Accordingly simulating these aspects requires the construction of models that enable an computationally efficient exploration of the relevant configuration space. LÄS MER