Abstract

The efficient charge generation ability of the MoOx/transparent amorphous oxide semiconductor (TAOS) bi‐layer is reported. The MoOx/TAOS bi‐layer charge generation layer (CGL) exhibited high optical transparency, low carrier injection barrier and low driving voltage for tandem OLEDs. It was also discovered that TAOS has ohmic contact with MoOx, which resulted in very small voltage drop across the charge generation layer. These results suggest that novel tandem white OLEDs with low driving voltage would be realized using the MoOx/ TAOS CGL.

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