Abstract
Novel organic-inorganic hybrid compounds, C n N 2 PbBr 4 (n=4,6,8 and 10) and C 2 N 2 PbBr 4 · DMSO, were prepared by the self-organization of lead bromide and a variety of alkyldiammonium cations. The powder X-ray diffraction patterns of C n N 2 PbBr 4 demonstrated that the compounds form layered perovskite structures and the interlayer spacing are dependent on the length of alkyl chain. The absorption and fluorescence spectra of C n N 2 PbBr 4 and C 2 N 2 PbBr 4 · DMSO crystalline powder showed an excitonic absorption peak at around 390 nm, which suggests that the formation of two-dimensional inorganic sheets and quantum confinement structure.
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