Fig. 2: EL spectra of perovskite LEDs under above- and sub-bandgap voltages. | Nature Communications

Fig. 2: EL spectra of perovskite LEDs under above- and sub-bandgap voltages.

From: Ultralow-voltage operation of light-emitting diodes

Fig. 2

a, b EL spectra of a FPI perovskite LED driven at different bias above and below the bandgap voltage. c, d EL spectra of a NFPI perovskite LED driven at different bias above and below the bandgap voltage. e, f EL spectra of a PCPB perovskite LED driven at different bias above and below the bandgap voltage.

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