Osram Sylvania Inc.

Nathaniel E Brese

Kenneth T Reilly

Vaddi B Reddy

An electroluminescent phosphor containing an alkali iodide dopant, such as lithium iodide or potassium iodide, and having CIE coordinates of x=0.173 to 0.187 and y=0.392 to &lt;0.424. The phosphor without alkali iodide dopant has CIE coordinates of x.apprxeq.0.180 to 0.184 and y.apprxeq.0.424 to 0.426. The method of making the phosphor includes adding the alkali iodides during a second firing step.

Alkali iodide doped zinc sulfide electroluminescent phoshor

An electroluminescent phosphor composed of copper activated zinc sulfide having an average particle size less than 23 micrometers and a halflife equal to or greater than the halflife of a second phosphor having a similar composition and an average particle size of at least 25 micrometers.

Growing community of inventors

Lansdale, PA, United States of America

Nathaniel E Brese