Fig. 7: Influence of ion migration in perovskites on PeLEDs. | Nature Communications

Fig. 7: Influence of ion migration in perovskites on PeLEDs.

From: Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot

Fig. 7

a Current behaviour of PeLEDs as a function of time under constant voltage of 3.5 V. b Voltage behaviour of PeLEDs under increasing step constant current of 0.16, 0.22, 0.44, 1.11, 2.22 mA cm−2 from the left column to the right in a sequence. c Magnified version of one step showing the discrepancy in the voltage behaviour between 3D PeLED and 3D/2D hybrid PeLED. d Capacitance-frequency curve of PeLEDs. e Schematic of possible ion migration pathways in 3D and 3D/2D hybrid perovskites and efficient restriction of ion migration owing to the BnA which has retardation effect of reorientation.

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