Fig. 5: Device performance with the functional layer.
From: Stable pure-green organic light-emitting diodes toward Rec.2020 standard
a Illustration of the device structure, carrier transport, exciton generation, energy transfer, and light-emitting process in D3 and D4. b Transient EL excitation properties of D3 and D4. c EQEs versus luminance curves of D3 and D4. The inset is the EL spectrum of D4 at 1000 cd m−2. d Transient EL decay properties of D3 and D4 upon switching off the driving voltage. e Operational device stability of D3 and D4, the initial luminance is 1000 cd m−2. The inset is the operating photograph of D4.
