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Organic light-emitting device with a phosphor-sensitized fluorescent emission layer

United States Patent

August 25, 2009
View the Complete Patent at the US Patent & Trademark Office
The present invention relates to organic light emitting devices (OLEDs), and more specifically to OLEDS that emit light using a combination of fluorescent emitters and phosphorescent emitters. The emissive region of the devices of the present invention comprise at least one phosphor-sensitized layer which has a combined emission from a phosphorescent emitter and a fluorescent emitter. In preferred embodiments, the invention relates to white-emitting OLEDS (WOLEDs).
Forrest; Stephen (Ann Arbor, MI), Kanno; Hiroshi (Osaka, JP)
The Trustees of Princeton University (Princeton, NJ)
11/ 447,473
June 5, 2006
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-FC26-04NT42272 awarded by the Department of Energy. The government has certain rights in this invention.