Figure 3
From: Efficient white phosphorescent organic light-emitting diodes using ultrathin emissive layers (<1 nm)
(a) EL spectra of devices (T1, T2 and T3) with different thickness of interlayers that between green and orange dyes at 6 V. (b) Current efficiencies versus current density of devices T1, T2 and T3. Inset: Current density-Voltage-Luminescence J-V-L characteristic of devices T1, T2 and T3. (c) The EL spectra of the device T3 at different operating voltages. (d) Transient PL lifetime of green film and green-orange film.
