A mixture of poly- and single crystals of zinc and ytterbium ({2|two} at.%) oxides {have been|happen to be|have already been} grown {from the|in the} melt at {high|higher} temperature (1430°C) and {high|higher} {pressure|stress} ({3|three}.{8|eight} GPa). The crystals {were|had been|have been} transparent {under|below|beneath} examination with naked eye. The diameter of crystals was {in the|within the|inside the} {range|variety} from 0.005 to {2|two} mm. X-ray diffraction confirmed presence of {individual|person} zinc and ytterbium oxides {in the|within the|inside the} recovered samples. No {change|alter|modify|adjust|transform} of zinc oxide lattice parameters was observed {compared to|in comparison to|in comparison with|when compared with} pristine zinc oxide. Cathodoluminescence spectra {of the|from the|in the|on the|with the|of your} mixture {were|had been|have been} recorded at 77 and 293 K. The collected spectra exhibit UV, green and near-infrared bands {due to|because of|as a result of|on account of|resulting from|as a consequence of} exciton recombination, presence of oxygen vacancies and ytterbium ions in ZnO crystals, respectively. 28269-02-5 supplier Bis-PEG1-acid web PMID:24631563
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