Sökning: "Nitrogen dopant"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Nitrogen dopant.

  1. 1. The Influence of Dopants on the Growth of Diamond by CVD

    Författare :Tanguy Van Regemorter; Karin Larsson; Matthias Schreck; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diamond; growth; chemical vapour deposition; nitrogen; phosphorus; boron; sulphur; density functional theory; Materials chemistry; Materialkemi;

    Sammanfattning : Diamond is an important material in many industrial applications (e.g., machining of hard materials, bio-electronics, optics, electronics, etc.) because of its exceptional properties such as hardness, tolerance to aggressive environments, compatibility with human tissues, and high carrier mobility. LÄS MER

  3. 2. Experiments and Theoretical Modeling of Fullerene-like CNx and CPx Thin Film Structures

    Författare :Andrej Furlan; Lars Hultman; Ulf Jansson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : This thesis concerns the materials science of carbon-based fullerene-like structures as a basis for the improvement of the applicability of FL-CNx protective thin films. In particular, structural origins of mechanical properties of FL-CNx coatings and water adsorption on their surface were investigated, both of which are critical parameters for their application as, e. LÄS MER

  4. 3. CVD Growth of Silicon Carbide for High Frequency Applications

    Författare :Urban Forsberg; Erik Janzén; Anne Henry; Christian Brylinski; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : Silicon Carbide (SiC) is an important wide band gap semiconductor with outstanding electronic properties. With figures of merit far better than silicon, SiC is believed to replace and outcompete silicon in many applications using high frequencies, high voltage and high temperatures. LÄS MER

  5. 4. The Effect of Various Dopants on Diamond Growth : A Combined Experimental & Theoretical Approach

    Författare :Yiming Zou; Karin Larsson; Mats Boman; Petter Persson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diamond; Growth rate; HFCVD; Doping; Activation energy; Reaction order;

    Sammanfattning : Diamond is a unique material with many exceptional properties. It has therefore been proven to be an important material for many applications. Moreover, the introduction of dopant species into the gas phase during the CVD growth process has been shown to strongly influence not only the properties and morphology of diamond, but also the growth rate. LÄS MER

  7. 5. Solving Problems in Surface Engineering and Tribology by Means of Analytical Electron Microscopy

    Författare :Ernesto Coronel; Sture Hogmark; Urban Wiklund; Mats Halvarsson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Tribology; Electron Microscopy; Surface Engineering; Structure and Composition; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : It is well known that thin coatings can provide increased lifetime and reduced energy consumption for tools and components. During use, e.g. LÄS MER