Fig. 3: QLED with a SnO2-ZnO bilayer ETL. | npj Flexible Electronics

Fig. 3: QLED with a SnO2-ZnO bilayer ETL.

From: Solution-processed quantum-dot light-emitting diodes combining ultrahigh operational stability, shelf stability, and luminance

Fig. 3

a Device structure. b L-J-V of QLEDs with s-ZnO or SnO2/s-ZnO as ETL. c EL spectra of QLEDs with s-ZnO or SnO2/s-ZnO as ETL. d EQE and current efficiency of QLEDs with s-ZnO or SnO2/s-ZnO as ETL. e Operational lifetime tests of QLEDs with s-ZnO or SnO2/s-ZnO as ETL (under a constant current density of 170 mA cm−2). The s-ZnO-based QLEDs were tested after being shelf-stored for 20 days.

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