Inventors:
Marina Kondakova - Kendall NY, US
Denis Kondakov - Kendall NY, US
Ralph Young - Rochester NY, US
Christopher Brown - Rochester NY, US
Kevin Klubek - West Henrietta NY, US
Viktor Jarikov - Rochester NY, US
Sheena Zuberi - Middlesex, GB
International Classification:
H01L 51/54
US Classification:
313504000, 428690000, 428917000, 313506000, 257E51049, 257E51050, 257E51051, 257E51043, 257E51044
Abstract:
An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host and at least one hole transporting co-host, wherein there is present an electron transporting layer contiguous to the LEL on the cathode side and wherein there is present an EIL layer containing a heteroaromatic compound contiguous to the cathode.