INCREASED EMISSION EFFICIENCY IN ORGANIC LIGHT-EMITTING DEVICES ON HIGH-INDEX SUBSTRATES
摘要
A device is provided. The device includes a substrate, a first electrode disposed over the substrate, a small molecule organic emissive layer disposed over the first electrode, and a second electrode disposed over the organic emissive layer. The substrate has a first index of refraction, and the organic emissive layer has a second index or refraction. The first index of refraction is higher than the second index or refraction. The device may have an external electroluminescent efficiency of at least about 56%. Bulky substituents or dopants may be used to decrease the index of refraction and/or the density of the organic emissive layer.
申请公布号
WO03047316(A1)
申请公布日期
2003.06.05
申请号
WO2002US38181
申请日期
2002.11.27
申请人
THE TRUSTEES OF PRINCETON UNIVERSITY;UNIVERSAL DISPLAY CORPORATION;LU, MIN-HAO, MICHAEL;STURM, JAMES, C.;MADIGAN, CONOR, FRANCIS;KWONG, RAYMOND
发明人
LU, MIN-HAO, MICHAEL;STURM, JAMES, C.;MADIGAN, CONOR, FRANCIS;KWONG, RAYMOND