Fig. 4: Charge carrier and exciton dynamics in OLEDs.
From: Stable pure-green organic light-emitting diodes toward Rec.2020 standard
a OLED structure of D3 with the thickness of each functional layer. b Energy level alignment and recombination zone distribution of D3. Hole-only device (HOD) and electron-only device (EOD) of the emitter layers in c D2 and d D3. e Transient EL properties of D1, D2, and D3 (the pulsed width was 300 μs). f Transient EL decay properties of D1, D2, and D3 upon switching off the driving voltage.
