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 AFM topographic images (2 μm × 2 μm) of the PEI surface W/O (a) and with (b) DI, (c) EtOH, and (d) EEA treatment.
