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Synthesis and characterization of Cs2Pb1-xBixCl2I2 (0 ≤ x ≤ 0.15) derivative perovskite

Breniaux, Edouard and Marin-Bernardez, Edelmy J. and Gallet, Emilie and Dufour, Pascal and Tenailleau, Christophe Synthesis and characterization of Cs2Pb1-xBixCl2I2 (0 ≤ x ≤ 0.15) derivative perovskite. (2020) Materials Chemistry and Physics, 247. 122870. ISSN 0254-0584

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Official URL: https://doi.org/10.1016/j.matchemphys.2020.122870


Mechanosynthesis was used to obtain pure crystalline powders of a 2D Ruddlesden-Popper type Cs2(Pb1.xBix) Cbl2 phase, with O ???? x :$ 0.15. These newly discovered compounds present interesting physical properties that may make them suitable for electronic devices, including LEDs and photovoltaics. Detailed structural analysis based on X-ray diffraction (XRD) data shows that lead substitution by bismuth reduces the unit cell parameters. A significant color change of the material has been observed with a clear red-shift related to the Bi doping content. The introduction of bismuth into the structure also induces strains as evidenced by XRD peak enlargemen'Πbut the material can be pure up to x = 15 mol.%. A first ageing study shows that these strains seem to be released with time and that Cs2PbClilz and 5 mol.% Bi-doped Cs2PbClilz materials remain pure after a month in air.

Item Type:Article
HAL Id:hal-03033007
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:12 Nov 2020 10:14

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