Blar i NTNU Open på forfatter "Brakstad, Thomas"
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Atomic force microscopy and variable angle spectroscopic ellipsometry of oxidising GaAs substrates for intermediate band solar cells
Holst-Dyrnes, Anne (Master thesis, 2018)The AFM images of the substrate sample revealed pits all over the sample surface that were tens of nanometers deep. The geometry of the pits on the surface seemed to be affected by the geometry of the AFM probe tip, ... -
Dispersion of polarization coupling, localized and collective plasmon modes in a metallic photonic crystal mapped by Mueller Matrix Ellipsometry
Kildemo, Morten; Brakstad, Thomas; Ghadyani, Zahra; Simonsen, Ingve (Journal article; Peer reviewed, 2015)We report a spectroscopic Mueller matrix experimental study of a plasmonic photonic crystal consisting of gold hemispheroidal particles (lateral radius 54 nm, height 25 nm) arranged on a square lattice (lattice constant ... -
Spectroscopic Ellipsometry of InAs/(Al)GaAs Quantum Dots for Intermediate Band Solar Cells
Drøyli, Maja Bjerke (Master thesis, 2017)As a step towards reducing the CO2 emissions to the atmosphere, generating electricity from renewable energy resources instead of fossil fuels is a good contributor. Solar cells convert energy from sunlight directly into ... -
Spectroscopic Ellipsometry of MoO3-x
Waalekalv, Magnus Langøien (Master thesis, 2016)Intermediate band solar cells (IBSC) has a great potential to increase the efficiency of solar cells and reduce the costs of the generated electricity. To realize IBSC that contain one or more sub-band gap in the main band ... -
Spectroscopic Mueller Matrix Analysis of Plasmonic Nanostructures Fabricated by Focused Ion Beam
Brakstad, Thomas (Master thesis, 2014)As nanofabrication has become more advanced over the last few decades, nanomaterials have received increased interest. One particular aspect of nanosized structures made of noble materials such as gold, is the peculiar ... -
Tailoring properties of nanostructured MoO3−x thin films by aqueous solution deposition
Inzani, Katherine; Nematollahi, Mohammadreza; Selbach, Sverre Magnus; Grande, Tor; Waalekalv, Magnus Langøien; Brakstad, Thomas; Reenaas, Turid Dory; Kildemo, Morten; Vullum-Bruer, Fride (Journal article, 2018)Molybdenum oxide films are required for a large range of optical, electronic and catalytic applications, and optimal film characteristics are similarly broad. Furthermore, the layered crystal structure of MoO3 is suited ...