Sökning: "XPS"

Visar resultat 1 - 5 av 261 avhandlingar innehållade ordet XPS.

  1. 1. Synchrotron X-ray based characterization of technologically relevant III-V surfaces and nanostructures

    Författare :Andrea Troian; NanoLund; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; synchrotron radiation; III-V semiconductors; high-k oxides; passivation; doping; XPS; AP-XPS; SPEM; XRF; full field X-ray diffraction microscopy; Fysicumarkivet A:2019:Troian;

    Sammanfattning : Innovative design and materials are needed to satisfy the demand for efficient and scalable devices for electronic and opto-electronic applications, such as transistors, LEDs, and solar cells. Nanostructured III-V semiconductors are an appealing solution, combining the excellent functional properties of III-V materials with the flexibility typical of nanostructures, such as the nanowires (NWs) studied here. LÄS MER

  2. 2. Computational studies of core level XPS satellites in transition metal systems : Department of Quantum Chemistry, Uppsala University

    Författare :Johnny Bustad; Högskolan i Gävle; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; adsorbates; shake-up; surface science; XPS; XES; INDO; model systems; Chemical physics; Kemisk fysik;

    Sammanfattning : Upon core ionization of a free molecule or a molecule adsorbed on a metal surface, higher binding energy satellites are observed, so called "shake-up" satellites, which can be viewed as valence excitations simultaneously to the creation of the core hole. In this thesis, theoretical studies of such core level XPS satellites in transition metal systems are presented, as well as cluster calculations of XES spectra, using the quantum mechanical INDO method. LÄS MER

  3. 3. Surface Characterisation Using ToF-SIMS, AES and XPS of Silane Films and Organic Coatings Deposited on Metal Substrates

    Författare :Ulf Bexell; Mikael Olsson; Sven Erik Hörnström; Åsa Kassman Rudolphi; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Materials science; Silanes; Organic films; ToF-SIMS; AES; XPS; Materialvetenskap; Materials science; Teknisk materialvetenskap; materialvetenskap; Materials Science;

    Sammanfattning : This work focuses on the surface and interfacial characterisation of silane films of a non-organofunctional silane, 1,2-bis(triethoxysilyl)ethane (BTSE), and an organofunctional silane, γ-mercaptopropyltrimethoxysilane (γ-MPS), deposited on Al, Zn and Al-43.4Zn-1.6Si (AlZn) alloy coated steel. LÄS MER

  4. 4. A study of mixed valence in Sm by XPS and LEED when it is deposited onto Pd(001)

    Författare :Dan K. Kristensson; Chalmers University of Technology; []
    Nyckelord :rare earth metals; XPS; x-ray photoemission; ESCA; intermediate valence; Low energy electron diffraction; mixed valence; Samarium; LEED;

    Sammanfattning : .... LÄS MER

  5. 5. Free Neutral Clusters and Liquids Studied by Electron Spectroscopy and Lineshape Modeling

    Författare :Henrik Bergersen; Olle Björneholm; Svante Svensson; Gunnar Öhrwall; Maxim Tchaplyguine; Hans Ågren; Uppsala universitet; []
    Nyckelord :Physics; Clusters; Nano-particles; XPS; UPS; AES; Radial structure; Molecular dynamics; Density functional theory; Liquids; Liquid microjet; Solvation; Fysik;

    Sammanfattning : The electronic and geometrical structure of free neutral clusters and liquids have been studied using synchrotron-radiation based photoelectron and Auger electron spectroscopy in combination with lineshape modeling. A novel experimental setup has been developed for studies of liquids, based on the liquid microjet technique. LÄS MER