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.pi.-conjugated heavy-metal polymers for organic white-light-emitting diodes

United States Patent

September 13, 2016
View the Complete Patent at the US Patent & Trademark Office
A polymer mixture emits a broad spectrum of visible light that appears white or near-white in the aggregate. The polymer mixture comprises two (or more) components in the active layer. A heavy atom, such as platinum and/or iridium, present in the backbone of the mixture acts via a spin-orbit coupling mechanism to cause the ratio of fluorescent to phosphorescent light emission bands to be of approximately equal strength. These two broad emissions overlap, resulting in an emission spectrum that appears to the eye to be white.
Vardeny; Zeev Valentine (Salt Lake City, UT), Wojcik; Leonard (Holladay, UT), Drori; Tomer (Salt Lake City, UT)
The University of Utah Research Foundation (Salt Lake City, UT)
12/ 300,416
May 14, 2007
GOVERNMENT SPONSORSHIP This invention was made with government support under Grant No. DE-FG02-04ER46109 awarded by the Department of Energy. The government has certain rights in the invention.