Patent ID: 8137588
Filing Date: 2012-03-20
Classification: C09K,H01J,H05H,Y10S,Y10T

Abstract:
1. A method of manufacturing nanoscale phosphor particles having an average particle size of less than about 200 nm and having an internal quantum efficiency of at least about 40%, the method comprising: passing a carrier fluid comprising phosphor precursors through a reactive field in a main chamber, thereby dissociating the phosphor precursors into elements; wherein the gas pressure inside the main chamber is in the range of about 5 kPa to about 100 kPa; wherein the power applied to the reactive field is in the range of about 10 kW to about 500 kW; wherein the temperature of the reactive field is greater than about 3000 K; and nucleating the elements to thereby precipitate nanoscale phosphor particles, wherein the nucleating step comprises supplying a quenching gas toward the freshly nucleated phosphor particles.