Reversible control of the electronic density of states at the Fermi level of Ca₃Co₄O9+δ misfit-layered oxide single crystals through O⁺/H⁺ plasma exposure
-
Moser, D.
Laboratory for Solid State Chemistry and Catalysis, EMPA, Dübendorf, Switzerland
-
Garnier, Michael G.
Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
-
Karvonen, L.
Laboratory for Solid State Chemistry and Catalysis, EMPA, Dübendorf, Switzerland
-
Shkabko, A.
Laboratory for Solid State Chemistry and Catalysis, EMPA, Dübendorf, Switzerland
-
Aebi, Philipp
Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
-
Weidenkaff, A.
Laboratory for Solid State Chemistry and Catalysis, EMPA, Dübendorf, Switzerland
Show more…
Published in:
- Journal of Materials Science. - 2013, vol. 48, no. 7, p. 2823-2828
English
Misfit-layered Ca₃Co₄O₉ crystals were grown and characterized via XRD, SEM, and photo-emission spectroscopy (PES). The evolution of the intensity at the Fermi level (E F) with varying oxygen content was studied by PES. Oxygen species were successfully introduced and removed through O⁺ and H⁺ microwave-plasma (2.45 GHz, 2–5 mbar) treatments, respectively. A 5 min O⁺ plasma exposure was observed to result into a drastic enhancement in the E F intensity, demonstrating the influence of oxygen content to the charge carrier population in layered cobalt-oxide materials.
-
Faculty
- Faculté des sciences et de médecine
-
Department
- Département de Physique
-
Language
-
-
Classification
-
Physics
-
License
-
License undefined
-
Identifiers
-
-
Persistent URL
-
https://folia.unifr.ch/unifr/documents/302629
Statistics
Document views: 60
File downloads: