Speaker
Roberta Totani
(University of Zürich)
Description
Photocatalytic water splitting allows storing solar energy as chemical energy. For large scale application in photoelectrochemical (PEC) cells, electrode materials need to be efficient and stable. In this work we investigate single-crystalline antimony selenide (Sb2Se3), a p-type semiconductor with excellent light absorbing properties and promising stability towards photocorrosion in aqueous environment. We studied cleaved Sb2Se3 surfaces with respect to their structural and electronic properties by means of XPS, XPD, LEED, STM and ARPES. The samples cleave along the (100) planes and the surface shows a pronounced one-dimensional structure, reflecting the zig-zag stacking of ribbons in the bulk crystal structure.
Author
Roberta Totani
(University of Zürich)
Co-authors
Dr
Fabian von Rohr
(Department of Chemistry, University of Zürich)
Dr
Wolf-Dietrich Zabka
(Department of Physics, University of Zürich)
Dr
Zbynek Novotny
(Department of Physics, University of Zürich)
Prof.
Jürg Osterwalder
(Universität Zürich)
