申请人:Steudel Annette
公开号:US20140217376A1
公开(公告)日:2014-08-07
An organic light-emitting device comprises a first electrode, a second electrode and at least one light-emitting layer between the first and second electrodes wherein the device comprises a plurality of light-emitters that together provide a source of white light. A first light-emitting layer comprises a host material and a first light-emitter of the plurality of light-emitters that emits light having a peak photo luminescent wavelength in the range of 580-610 nm; and wherein a LUMO of the first light-emitter is no more than 0.2 eV further from vacuum than a LUMO level of the host material.