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- University of OsloNO29 papers
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7 papers · 1 filter
Oxidation effects on graded porous silicon anti-reflection coatings
Annett Thøgersen, Josefine H. Selj, Erik S. Marstein
Efficient anti-reflection coatings (ARC) improve the light collection and thereby increase the current output of solar cells. By simple electrochemical etching of the Si wafer, por…
Elemental distribution and oxygen deficiency of magnetron sputtered ITO films
Annett Thøgersen, Margrethe Rein, Edouard Monakhov +2
The atomic structure and composition of non-interfacial ITO and ITO-Si interfaces were studied with Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS…
The dielectric functions and optical band gaps of thin films of amorphous and cubic crystalline Mg~2NiH~4
J. H. Selj, T. Mongstad, B. Hauback +1
Magnesium nickel hydride films have earlier been suggested for several optoelectronic applications, but the optical properties and band gap have not been firmly established. In thi…
Surface oxide on thin films of yttrium hydride studied by neutron reflectometry
Trygve Mongstad, Charlotte Platzer-Björkman, Jan Petter Mæhlen +3
The applicability of standard methods for compositional analysis is limited for H-containing films. Neutron reflectometry is a powerful, non-destructive method that is especially s…
Magnetic properties of carbon nanodisk and nanocone powders
Jozef Cernak, Geir Helgesen, Jozef Kovac +2
We have investigated the magnetic properties of carbon powders which consist of nanodisks, nanocones, and a small fraction of carbon-black particles. Magnetization measurements wer…
MgyNi1-y(Hx) thin films deposited by magnetron co-sputtering
Trygve Mongstad, Chang C. You, Annett Thøgersen +4
In this work we have synthesised thin films of MgyNi1-y(Hx) metal and metal hydride with y between 0 and 1. The films are deposited by magnetron co-sputtering of metallic targets o…