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標題: Magnetophotoluminescence properties of Co-doped ZnO nanorods
作者: Lin, C.Y.
Wang, W.H.
Lee, C.S.
Sun, K.W.
Suen, Y.W.
關鍵字: cobalt;diamagnetism;excitons;II-VI semiconductors;lattice constants;magneto-optical effects;nanostructured materials;photoluminescence;Raman spectra;semimagnetic semiconductors;spectral line intensity;wide band gap semiconductors;zinc compounds;magnetic semiconductors;thin-films;room-temperature;zinc-oxide;ferromagnetism;growth;mn;nanowires;nanostructures;zn1-xcoxo
Project: Applied Physics Letters
期刊/報告no:: Applied Physics Letters, Volume 94, Issue 15.
We present the detailed experimental results of the magnetic and optical properties of cobalt doped ZnO nanorods, especially the temperature and magnetic field dependence of photoluminescence up to 14 T. The Raman measurements indicate that our Co-doped ZnO nanorods have the same lattice constant as crystalline bulk ZnO. Sharp luminescence peaks centered at around 670 nm were observed at low temperature and their intensity decreased with increasing magnetic field. The luminescence peaks were attributed to d-d transitions in the Ligand field from the doped Co ions. We also observed a diamagnetic shift at a temperature of 1.5 K when the magnetic field was scanned from 0 to 14 T. The exciton radius of the Co-doped ZnO nanorods was deduced from the magnetophotoluminescence results.
ISSN: 0003-6951
DOI: 10.1063/1.3117203
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