Fig. 3: OLED performance and EL spectra during degradation.
From: Stable pure-green organic light-emitting diodes toward Rec.2020 standard
a EL spectra, b EQEs versus luminance curve, and c the operational device stability of D1, D2, and D3, the initial luminance is 1000 cd m−2. The normalized EL spectral shapes of d D1, e D2, and f D3 at various operational lifetimes during the degradation.
