Improvement of electro-optic performances in white organic light emitting diodes with color stability by buffer layer and multiple dopants structure

Kou Zhi-Qi^†, Tang Yu, Yang Li-Ping, Yang Fei-Yu, Guo Wen-Jun

(color online) (a) Normalized EL spectra of the devices A3, B1, B2, and C1 at voltage 6 V and ((b)–(d)) normalized EL spectra and CIE coordinates of devices B1, B2, and C1 at different voltages, respectively.