Browsing Kjemisk institutt by Author "Schrade, Matthias"

Now showing items 1-9 of 9

  • Chemical stability of Ca3Co4−xO9+δ/CaMnO3−δ p–n junction for oxide-based thermoelectric generators 
    Gunnæs, Anette Eleonora; Tofan, Raluca; Berland, Kristian; Gorantla, Sandeep Madhukar; Storaas, Thomas Aarflot; Desissa, Temesgen Debelo; Schrade, Matthias; Persson, Clas; Einarsrud, Mari-Ann; Wiik, Kjell; Norby, Truls Eivind; Kanas, Nikola (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    An all-oxide thermoelectric generator for high-temperature operation depends on a low electrical resistance of the direct p–n junction. Ca3Co4−xO9+δ and CaMnO3−δ exhibit p-type and n-type electronic conductivity, respectively, ...
  • Electrical Properties of a p–n Heterojunction of Li-Doped NiO and Al-Doped ZnO for Thermoelectrics 
    Desissa, Temesgen D.; Schrade, Matthias; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    The electrical properties of a p–n heterojunction of polycrystalline p-type Ni0.98Li0.02O and n-type Zn0.98Al0.02O have been investigated for potential applications in high-temperature oxide-based thermoelectric generators ...
  • High entropy alloy CrFeNiCoCu sputter deposited films: Structure, electrical properties, and oxidation 
    Mayandi, Jeyanthinath; Schrade, Matthias; Vajeeston, Ponniah; Stange, Marit Synnøve Sæverud; Lind, Anna Maria; Sunding, Martin Fleissner; Deuermeier, Jonas; Fortunato, Elvira; Løvvik, Ole Martin; Ulyashin, Alexander; Diplas, Spyridon; Almeida Carvalho, Patricia; Finstad, Terje Gunnar (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    High entropy alloy (HEA) films of CrFeCoNiCu were deposited by sputtering. Their structure was characterized and their electric transport properties were studied by temperature-dependent Hall and Seebeck measurements. The ...
  • Oxygen nonstoichiometry in (Ca2CoO3)0.62(CoO2): a combined experimental and computational study 
    Schrade, Matthias; Casolo, Simone; Graham, Paul J.; Ulrich, Clemens; Li, Sean; Løvvik, Ole Martin; Finstad, Terje; Norby, Truls (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2014)
    The oxygen nonstoichiometry in the misfit calcium cobaltite (Ca2CoO3)0.62(CoO2) has been studied experimentally and by density functional theory (DFT) calculations. The standard oxidation enthalpy ΔH0Ox of oxygen deficient ...
  • Relating defect chemistry and electronic transport in the double perovskite Ba1-xGd0.8La0.2+xCo2O6-d (BGLC) 
    Vøllestad, Einar; Schrade, Matthias; Segalini, Julie; Strandbakke, Ragnar; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
    Rare earth double perovskites comprise a class of functional oxides with interesting physiochemical properties both for low- and high-temperature applications. However, little can be found relating electrical properties ...
  • Tetragonal tungsten bronzes Nb8-xW9+xO47-d: optimization strategies and transport properties of a new n-type thermoelectric oxide 
    Heinrich, Christophe P.; Schrade, Matthias; Cerretti, Giacomo; Lieberwirth, Ingo; Leidich, Patrick; Schmitz, Andreas; Fjeld, Harald; Müller, Eckhard; Finstad, Terje; Norby, Truls; Tremel, Wolfgang (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2015)
    Engineering of nanoscaled structures may help controlling the electrical and thermal transport in solids, in particular for thermoelectric applications that require the combination of low thermal conductivity and low ...
  • The Band Gap of BaPrO3 Studied by Optical and Electrical Methods 
    Schrade, Matthias; Magraso, Anna; Galeckas, Augustinas; Finstad, Terje; Norby, Truls (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
    We report on measurements of the electrical and optical properties of BaPrO3. The temperature dependences of the electrical conductivity σ and the Seebeck coefficient α of polycrystalline samples were studied over a wide ...
  • Thin films made by reactive sputtering of high entropy alloy FeCoNiCuGe: Optical, electrical and structural properties 
    Mayandi, Jeyanthinath; Finstad, Terje Gunnar; Dahl, Øyvind; Ponniah, Vajeeston; Schrade, Matthias; Løvvik, Ole Martin; Diplas, Spyridon; Almeida Carvalho, Patricia (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Films were reactively sputtered from a high entropy alloy (HEA) FeCoNiCuGe target in an Ar/O2 plasma. The case of zero O2 gas flow yielded HEA films of FeCoNiCuGe. These as-deposited HEA films have a face centered cubic ...
  • Zn vacancy formation, Zn evaporation and decomposition of ZnSb at elevated temperatures: Influence on the microstructure and the electrical properties 
    Song, Xin; Schrade, Matthias; Maso Carcases, Nahum; Finstad, Terje (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    The influence of annealing on the microstructure and electrical properties of undoped polycrystalline ZnSb samples has been investigated by different experimental techniques. In situ XRD in an argon at- mosphere showed ...