Abstract
A spray drying approach was used to coat 15 nm SiO2 continuous films onto ZnS:Ag phosphor particles. The coating was deposited on the particles by simultaneously spraying a slurry consisting of a solution of TEOS and ethanol with the solid phosphor particles into a heated drying column. The cathodoluminescent spectra of silica coated phosphor has CIE 1931 chromaticity coordinates of X ∼ 0.055, Y ∼ 0.085, brightness that is 90% of the uncoated phosphor brightness, and improved aging behavior under laboratory testing conditions.
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Villalobos, G., Sanghera, J., Miklos, R. et al. Chromaticity, brightness and aging of silica spray coated zinc sulfide silver phosphor particles. J Mater Sci 40, 6169–6173 (2005). https://doi.org/10.1007/s10853-005-3162-6
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DOI: https://doi.org/10.1007/s10853-005-3162-6