Berlin 2012 – wissenschaftliches Programm
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SYRS: Symposium Resistive Switching
SYRS 2: Poster: Resistive switching (jointly organized by DS, DF, KR, HL)
SYRS 2.19: Poster
Donnerstag, 29. März 2012, 17:30–19:00, Poster E
Investigation of the thermal conductivity of ZnO1−xSx thin films — •Florian Gather, Achim Kronenberger, Peter J. Klar, and Bruno K. Meyer — I. Physikalisches Institut, Justus-Liebig-University, Heinrich-Buff-Ring 16, 35392 Giessen
We investigated the thermal conductivity κ of rf-sputtered ZnO1−xSx thin films. For a reliable measurement of the thermal conductivity of thin films, the 3ω-method is supposed to yield the best results. Measurements, performed using a self-constructed 3ω measurement system, show a reduced κ of the ZnO1−xSx samples compared to bulk crystals. Using Raman spectroscopy we found indications for local phonon modes of oxygen in zinc-sulfide and sulphur in zinc-oxide, respectively. Presumably these local phonon modes cause the reduction of κ observed in the experiments.