Doping of zinc oxide particles for sunscreen applications
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United States of America Patent
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Apr 10, 2018
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Mar 28, 2016
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Sep 3, 2015
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Abstract
Zinc oxide compositions as well as techniques for doping ZnO particles for sunscreen applications are provided herein. A method includes selecting one or more dopants to be incorporated into one or more zinc oxide particles in a sunscreen composition, wherein the one or more dopants comprise chromium, cobalt, gallium, and/or tin, and wherein said selecting is based on one or more optical properties associated with each of the dopants, and incorporating the selected dopants into the zinc oxide particles to create the sunscreen composition. A composition includes multiple zinc oxide particles suspended within a medium forming sunscreen composition, and one or more dopants incorporated into each of the multiple zinc oxide particles, wherein the one or more dopants comprise chromium, cobalt, gallium, and/or tin, and wherein each of the dopants imparts one or more optical properties to the zinc oxide particle within which the dopant is incorporated.
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