12 April 1999 Protectively coated phosphors
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guillermo R. Villalobos, Guillermo R. Villalobos, Shyam S. Bayya, Shyam S. Bayya, Jasbinder Singh Sanghera, Jasbinder Singh Sanghera, Ishwar D. Aggarwal, Ishwar D. Aggarwal, } "Protectively coated phosphors", Proc. SPIE 3636, Flat Panel Display Technology and Display Metrology, (12 April 1999); doi: 10.1117/12.344634; https://doi.org/10.1117/12.344634

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