Fig. 1 | Nature Communications

Fig. 1

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

Fig. 1The alternative text for this image may have been generated using AI.

Characterizations of 2D perovskite single crystals. a Photograph of the as-synthesized perovskite single-crystal plates. From left to right: (BA)2(MA)n−1PbnBr3n+1 (denoted as PbnBr3n+1) and (BA)2(MA)n−1PbnI3n+1 (denoted as PbnI3n+1). b Absorption (dash line) and photoluminescence (solid line) spectra of the perovskite plates. c Powder XRD spectra of the perovskite crystal plates. The low angle part is magnified to clearly see the diffraction peaks for impurity phases. Black dot: (BA)2PbBr4 phase within (BA)2(MA)Pb2Br7; Navy rhombus: (BA)2(MA)3Pb4I13 phase within (BA)2(MA)2Pb3I10

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