White organic light emitting diode with single emission layer DPVBipartially doped with rubrene

摘要

In this study, we fabricated white organic lightemitting devices (WOLEDs) to use single emissionlayer, DPVBi with partially doped Rubrene. Torealize white color, rubrene with 3.6% was partiallydoped with the gap from interface between DPVBiand hole transport layer NPD in a definite DPVBilayer. As the gap was increased, the intensity oforange peak grows less and less. The WOLED withgap of 5 ? has the best color stability and its colorcoordination is (0.345, 0.321) at 6V.