Fig. 5: Device performance of photodetectors and LEDs for 2D perovskite heterostructures. | Nature Communications

Fig. 5: Device performance of photodetectors and LEDs for 2D perovskite heterostructures.

From: Establishing charge-transfer excitons in 2D perovskite heterostructures

Fig. 5

a The ON–OFF behaviors of heterostructured 2D perovskite [(PEA2PbI4)0.95:(PEA2SnI4)0.05] photodetector (red) as compared to pure PEA2PbI4 (black) and PEA2SnI4 (blue) devices when exciting at 640 nm (1000 mW/cm2). b Absorption spectra of two films. c EL spectrum containing broad CTE emission and host emission. d Current density–voltage–EL curve of doped device. The device structure is shown as the inset.

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