Physica status solidi. C, 2004-03, Vol.1 (4), p.884-887
2004
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Details
- Autor(en) / Beteiligte
- Titel
- ZnO and ZnO:Mn crystals obtained with the chemical vapour transport method
- Ist Teil von
- Physica status solidi. C, 2004-03, Vol.1 (4), p.884-887
- Ort / Verlag
- Berlin: WILEY-VCH Verlag
- Erscheinungsjahr
- 2004
- Quelle
- Wiley Online Library All Journals
- Beschreibungen/Notizen
- Successful growth of the ZnO and ZnO:Mn crystals by the CVT method and their characterisation are reported. The source material was synthesized at 650 °C from oxygen and zinc vapours and subsequently – baked (as a powder) to achieve stoichiometry. Crystal growth (at ∼1100 °C, with the rate ∼1–2 mm/day) proceeded in graphite‐covered quartz ampoules containing pure (6N) hydrogen or nitrogen or chlorine and a little of water vapour and carbon. The crystals, both as‐grown and annealed in pure oxygen, were characterised by the measurements of: transmission spectra in energy gap and far infrared regions, photoluminescence and reflectivity spectra, electrical transport properties and EDXRF – the energy dispersive X‐ray fluorescence (for Mn content determination). In the surface region – the impurities and the Mn content were studied by the secondary ion mass spectroscopy (SIMS). Manganese and native defects (VO) were investigated by electron paramagnetic resonance (EPR) and Raman spectroscopy. Results of the measurements are presented and discussed. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)