Blar i NTNU Open på forfatter "Ghadyani, Zahra"
-
Anisotropic plasmonic Cu nanoparticles in sol-gel oxide nanopillars studied by spectroscopic Mueller matrix ellipsometry
Ghadyani, Zahra; Kildemo, Morten; Aas, Lars Martin Sandvik; Cohin, Y; Søndergård, E (Peer reviewed, 2013)Broadened plasmon resonances of Cu nanoparticles in nanopatterned mixed oxide sol-gel nanopillars are shown to be readily detected by spectroscopic Mueller matrix ellipsometry. The plasmonic nanomaterials are obtained by ... -
Band-edge modification and mid-infrared absorption of co-deposited FexZn1-xS thin films
Molland, Nelly-Ann; Ghadyani, Zahra; Karhu, Eric Andrew; Poggio, Stefano; Nematollahi, Mohammadreza; Kildemo, Morten; Reenaas, Turid Worren; BelBruno, Joseph; Gibson, Ursula (Journal article; Peer reviewed, 2015)The bandgap of iron-doped ZnS has been reported by others to change significantly under the addition of a few atomic percent of iron, which would have significant implications for solar energy. Here, thin films of FexZn1-xS ... -
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 ... -
Molecular beam and pulsed laser deposition of ZnS:Cr for intermediate band solar cells
Nematollahi, Mohammadreza; Yang, Xiaodong; Aas, Lars Martin Sandvik; Ghadyani, Zahra; Kildemo, Morten; Gibson, Ursula; Reenaas, Turid Worren (Journal article, 2015)We have investigated the structural and optical properties of Cr-doped ZnS (ZnS:Cr) thin films (0–7.5 at.% Cr) for use in intermediate band solar cells. The films were grown on Si(100) in molecular beam epitaxy (MBE) and ... -
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 ...