Sökning: "perovskites"

Visar resultat 11 - 15 av 43 avhandlingar innehållade ordet perovskites.

  1. 11. Neutron scattering investigations of proton dynamics in acceptor doped barium zirconates

    Författare :Daria Noferini; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fuel cells; energy materials; Proton conductors; neutron scattering; QENS; proton dynamics; perovskites;

    Sammanfattning : Hydrogen fuel cells represent one of the most promising sustainable technologies for energy conversion. The advantages of the combination of a solid state electrolyteand low operational temperatures (... LÄS MER

  2. 12. Studies on metal oxide catalysts for selective catalytic reduction of NOx with NH3 -Influence of preparation procedure and feed gas transients

    Författare :Mikaela Wallin; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; ammonia; transient ammonia supply; microemulsion; perovskites; metal oxide catalysts; zeolite H-ZSM-5; NOx; SCR;

    Sammanfattning : .... LÄS MER

  3. 13. An X-ray Spectroscopic Study of Perovskites Oxides and Halides for Emerging Devices

    Författare :Dibya Phuyal; Olof Karis; Manuel Bibes; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; perovskite oxides; halide perovskites; x-ray spectroscopy; electronic structure; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Sammanfattning : This thesis investigates the electronic structures on several perovskite oxide and halide materials with a focus on light harvesting applications. The systematic study of the electronic properties of the transition metal oxides and post-transition metal halides is a key point if one is to understand their properties. LÄS MER

  4. 14. First principles calculations of perovskites structural properties

    Författare :Blanka Magyari-Köpe; KTH; []
    Nyckelord :Density functional theory; Electronic structure; High pressure; Perovskite structure; Phase transition; Structural stability; Geophysics;

    Sammanfattning : .... LÄS MER

  5. 15. Preparation and Characterization of Lead Halide Perovskites : Towards sustainable, cost-effective and upscalable solar cell manufacture

    Författare :Kári Sveinbjörnsson; Erik Johansson; Pablo Docampo; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; perovskite solar cells; perovskite; photoconductivity; carbon nanotubes; transparent contact; ambient processing; water-based; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Sammanfattning : The perovskite solar cell (PSC) is a recent contender within the photovoltaic research field. In a matter of a few years, the power conversion efficiency (PCE) of the PSC has catapulted from 4% to above 22%, which represents one of the fastest developments in the field. LÄS MER