Perovskite Materials

Layers for red luminescence

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Science  06 Apr 2018:
Vol. 360, Issue 6384, pp. 45-46
DOI: 10.1126/science.360.6384.45-g

Two-dimensional organic-inorganic perovskites differ from their three-dimensional counterparts by having a quantum well structure that can alter their luminescent properties. Typically, these materials are formed by replacing A-site cations such as cesium with larger organic cations. Nazarenko et al. found that lead halide with two smaller cations, formamide (FA) and guanidinium (G)—FAGPbI4—exhibited red photoluminescence at room temperature and was stable up to 255°C. The material is also photoconductive.

J. Am. Chem. Soc. 10.1021/jacs.8b00194 (2018).

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