High-Efficient Non-Doped Type White Organic Light-Emitting Devices Using an Electron/Exciton Blocker
Non-doped type white organic electroluminescent (EL) devices have the following structure ITO/m-MTDATA (30nm) /NPB (20-dnm) /rubrene (0.1nm) /NPB (dnm) /DPVBi (20nm) /TPBi (20nm) /Alq (10nm) /LiF/Al were fabricated. The EL spectrum of the devices are dependent on the d and when d=3, the CIE coordinates of the device were well within the white region for voltage raging from 3V to 15V. This device has a luminance of 18950cd/m2 at 15V and maximum power efficiency of 5.65cd/A at 6V.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
W. Xie and S. Y. Liu, "High-Efficient Non-Doped Type White Organic Light-Emitting Devices Using an Electron/Exciton Blocker", Materials Science Forum, Vols. 475-479, pp. 1799-1804, 2005