High stability white organic light-emitting diode fabricated with the deposition of solvent premixed sources

► High-stability dual- and tri-wavelength WOLEDs were fabricated. ► Doped dyes were uniformly dispersed throughout the emission layer by means of solvent premixing. ► Energy transfer mechanisms influenced the efficiency and chromaticity of the devices. ► The efficiencies were 6.34 and 6.38 cd/A for the dual- and tri-wavelength WOLEDs, respectively.