Theoretical calculations reveal origin of violet-blue emission in semiconducting 2D hybrid perovskite
In a recent Journal of Luminescence article, the authors reported a new two-dimensional hybrid organic–inorganic perovskite that exhibits narrow-band violet-blue photoluminescence. The obtained perovskite, (ethylammonium)₂CdBr₄, is a semiconductor with a large optical band gap of 4.25 eV. Notably, this material exhibits a narrow photoluminescence band at 388 nm, with a full width at half maximum of 32 nm. The chromaticity coordinates of its emission are close to the NTSC blue standard.
Theoretical calculations played a significant role in determining the origin of the material’s semiconducting properties. Band structure and density of states calculations using AMS revealed that the states near the Fermi level predominantly originate from cadmium and bromide.
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Olesia I. Kucheriv, Valerii Y. Sirenko, Sergiu Shova, Il’ya A. Gural’skiy,
2D hybrid organic-inorganic perovskite displaying narrow-band violet-blue photoluminescence,
Journal of Luminescence,Volume 275, 2024, 120753.
