Surface treatment on polyethylenimine interlayer to improve inverted OLED performance

Wei Chang-Ting^{1, 2}, Zhuang Jin-Yong², Chen Ya-Li^{1, †,}, Zhang Dong-Yu^{2, ‡,}, Su Wen-Ming², Cui Zheng²

EQE–V (Inset: EL spectra.) characteristics of Alq₃ IOLEDs with different surface treatment processes on PEI layer.