Fig. 2 | Nature Communications

Fig. 2

From: On the degradation mechanisms of quantum-dot light-emitting diodes

Fig. 2

Electro-absorption spectra. a In-phase spectra of standard red devices (ITO/PEDOT:PSS/TFB/red quantum dots (QD)/ZnO/Al). b In-phase spectra of standard blue devices (ITO/PEDOT:PSS/TFB/blue QD/ZnO/Al). The measurements are carried out using a DC bias of −1 V, AC amplitude of 0.1 V. For each device, the spectrum of electro-absorption is taken before and after the lifetime test. Arrows mark contribution from the hole-transporting layer and QD

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