Fig. 2: QD-LEDs characterizations.
From: Stable and efficient pure blue quantum-dot LEDs enabled by inserting an anti-oxidation layer
a Electroluminescence (EL) spectra of QD-LEDs with PBO under different driving voltages, and the inset shows the photograph of EL emission from the device operated at 6 V. b The current density-luminance-voltage characteristics and c external quantum efficiency (EQE) as a function of voltage for the QD-LEDs without and with PBO. d Statistical histogram of EQE for 40 devices with PBO inserting layer.
