Journal
JOURNAL OF CRYSTAL GROWTH
Volume 320, Issue 1, Pages 18-22Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2011.01.005
Keywords
Hydrothermal crystal growth; Zinc compounds; Scintillator materials
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Zinc oxide (ZnO) crystals were grown by the hydrothermal method under significantly improved conditions. Careful adjustment of critical growth conditions led the way towards ZnO crystals with extremely low (<10(14) cm(-3)) lithium and potassium content. Photoluminescence reveals the low defect levels. The as-grown (0 0 0 1) surface exposes steps of 0.52 nm in height. High growth rates above 0.4 mm per day while observing narrow values for the X-ray rocking curve, FWHM from (0 0 2) reflection below 20 arcsec, and the growth of highly transparent, apparently colorless ZnO crystals are reported. Cautious co-doping with indium and lithium yields high-quality crystals. (C) 2011 Elsevier B.V. All rights reserved.
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