Surface treatment on polyethylenimine interlayer to improve inverted OLED performance
Wei Chang-Ting1, 2, Zhuang Jin-Yong2, Chen Ya-Li1, †, 
, Zhang Dong-Yu2, ‡, , Su Wen-Ming2, Cui Zheng2
, Zhang Dong-Yu2, ‡, , Su Wen-Ming2, Cui Zheng2 Energy level diagrams of (a) Alq3, (b) Ir(ppy)3 IOLEDs with the PEI rinsing with EEA.
