Fig. 3 | Nature Communications

Fig. 3

From: Self-trapped state enabled filterless narrowband photodetections in 2D layered perovskite single crystals

Fig. 3The alternative text for this image may have been generated using AI.

Narrowband photodetection in the entire visible range. a Reflection spectra of the perovskite single-crystal plates. Red dots indicate the exciton peak, whereas blue rhombus mark the self-trapped states below the bandgap. b Normalized EQE spectra of the vertical devices (Config. 1) based on 2D perovskite of different halide compositions and layer number n. Measurements were carried out under a bias of 5 V

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