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We report a wet chemical method for spray-coating of large areas with microscopic transparent hemispherical silica structures using sol-gel phase separation in tetraethyl orthosilicate sols. Suitable adjustment of preparation conditions (amount of sprayed solution, its concentration, water content, amount of catalyst) led to the formation of sufficiently small, high aspect ratio and densely packed...
Atomic layer deposition based on alternate cycling of ZrCl4, Dy(thd)3 and H2O as precursors was applied for preparation of nanocrystalline ZrO2:Dy thin films. Photoluminescence (PL) properties of Dy3+ in the ZrO2 films were studied at several laser excitations. Substantial activation of Dy3+ PL required thermal treatment at 900°C. As a result of annealing, thinner (~80nm) films with higher Dy content...
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