Preparation of core/shell luminescent structures by ion-plasma deposition

We have investigated the preparation of encapsulating oxide coatings on the surface of the commercially available copper-doped zinc sulfide electroluminescent phosphor E-455 by ion-plasma deposition. The encapsulants used were titanium, zirconium, and magnesium oxides. In our experiments, we varied...

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Bibliographic Details
Published inInorganic materials Vol. 51; no. 4; pp. 319 - 325
Main Authors Ogurtsov, K. A., Sychov, M. M., Bakhmet’ev, V. V., Eruzin, A. A., Minakova, T. S., Vysikailo, F. I., Belyaev, V. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2015
Subjects
Brightness
Chemistry
Chemistry and Materials Science
Deposition
Electroluminescence
Encapsulating
Encapsulation
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Magnesium
Materials Science
Phosphors
Titanium
Zinc Sulfide
Phosphor Sample
Uncoated Sample
Ceramic Coating
Electroluminescence Spectrum
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ISSN0020-1685
1608-3172
DOI10.1134/S0020168515040111

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Summary:We have investigated the preparation of encapsulating oxide coatings on the surface of the commercially available copper-doped zinc sulfide electroluminescent phosphor E-455 by ion-plasma deposition. The encapsulants used were titanium, zirconium, and magnesium oxides. In our experiments, we varied the deposition time and the oxygen pressure in the sample chamber. As a result, optimal conditions were found for encapsulant film growth on the phosphor powder, which considerably improved the service stability of the emission of electroluminescent light sources. After service aging, the brightness of a magnesium oxide-encapsulated phosphor sample was 80% higher than that of the uncoated sample.
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ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168515040111