Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 91: Poster IIIb (Joint session of DS and HL, organized by HL)
HL 91.3: Poster
Donnerstag, 10. März 2016, 16:00–19:00, Poster A
Time-resolved photoluminescence spectroscopy on vanadium-(IV)oxide nanostructures — •Konstantin Neuhaus1, Celina Hellmich1, Nils Rosemann1, Marc K. Dietrich2, Peter J. Klar2, Angelika Polity2, and Sangam Chatterjee1 — 1) Faculty of Physics and Materials Science Center, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany — 2) I. Physical Institute, Justus-Liebig University Giessen, Heinrich-Buff-Ring 16, D-35392 Gießen, Germany
Transitionmetal oxides show various intriguing phenomena which may be attributed to the complex interplay of various degrees of freedom such as electronic excitations, lattice vibration, and spin states of matter. Vanadium(IV)oxide for instance shows a metal-insulator transition at a lattice temperature of Tc=68∘C which is accompanied by a change in the crystal structure. Here, we study the electro-optical response on VO2 nanostructures. The microcrystalline samples are grown on various substrates by radio-frequency sputter-deposition and partially doped with Sr. The time-resolved photoluminescence characteristics are recorded for various lattice temperatures using a confocal streak-camera setup with high spatial resolution.