Changes

#The battery or power supply of the device containing the OLED applies a voltage across the OLED.

#An electrical current flows from the cathode to the anode through the organic layers (an electrical current is a flow of electrons).

* The anode removes electrons from the conductive layer of organic molecules. (This is the equivalent to giving electron holes to the conductive layer.)

#At the boundary between the emissive and the conductive layers, electrons find electron holes.