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Proceedings Paper

Protectively coated phosphors
Author(s): Guillermo R. Villalobos; Shyam S. Bayya; Jasbinder Singh Sanghera; Ishwar D. Aggarwal
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Paper Abstract

We have developed a spraying process for coating individual phosphor particles with electrically conducting, non- conducting, and hybrid films. The phosphor is suspended in either aqueous or non-aqueous solvent containing the appropriate coating materials precursors. Depositions via gelation or precipitation of the precursor material on the particles is prevented before spraying. The suspension is sprayed into a hot zone where the coating either gels or precipitates on the particle surface in-flight. Coatings developed in-flight are more uniform than coatings developed in solution. Typical coating thicknesses of 10 to 90 nm have been achieved in a single pass. Multiple coatings are applied using multiple passes. This process is scalable to industrial sizes and is easily adaptable for coating particles for other applications.

Paper Details

Date Published: 12 April 1999
PDF: 6 pages
Proc. SPIE 3636, Flat Panel Display Technology and Display Metrology, (12 April 1999); doi: 10.1117/12.344634
Show Author Affiliations
Guillermo R. Villalobos, Naval Research Lab. (United States)
Shyam S. Bayya, Naval Research Lab. (United States)
Jasbinder Singh Sanghera, Naval Research Lab. (United States)
Ishwar D. Aggarwal, Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 3636:
Flat Panel Display Technology and Display Metrology
Bruce Gnade; Edward F. Kelley, Editor(s)

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