US Patent 10439109 Luminescent coatings and devices

A method of combining a first phosphor material and a second phosphor material and devices made therefrom. The method includes providing a first phosphor material, combining the first phosphor material with a host matrix to create a first phosphor mixture, curing the first phosphor mixture at one or more predetermined temperatures, and depositing the cured first phosphor mixture onto a substrate having a second phosphor material. The first phosphor material includes red emission phosphor particles and the second phosphor material includes yellow emission phosphor particles and the host matrix includes a silsesquioxane host material, silsesquioxane-silicate host material, a sol gel host material, or an alkali/silicate water glass host material.