Influence of crystallisation on the structural and optical properties of lead-free CsAgBiBr perovskite crystals

By slowly evaporating organic solvents, we succeeded in growing lead-free double perovskite Cs 2 AgBiBr 6 crystals. Solubility curves prove the advantage of this growth technique and allow comparison with the controlled cooling method. The growth temperature significantly affects the optical propert...

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Published in:CrystEngComm 2021-10, Vol.23 (39), p.6848-6854
Main Authors: Armer, Melina, Höcker, Julian, Büchner, Carsten, Häfele, Sophie, Dörflinger, Patrick, Sirtl, Maximilian T, Tvingstedt, Kristofer, Bein, Thomas, Dyakonov, Vladimir
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Summary:By slowly evaporating organic solvents, we succeeded in growing lead-free double perovskite Cs 2 AgBiBr 6 crystals. Solubility curves prove the advantage of this growth technique and allow comparison with the controlled cooling method. The growth temperature significantly affects the optical properties of the crystals, which enables us to better understand the material structure-property relationships. We compare the growth of Cs 2 AgBiBr 6 crystals by slow and fast evaporation of organic solvents. Using different growth temperatures and precursors enables bridging the gap between the optical properties and applications of Cs 2 AgBiBr 6 in solar cells.
ISSN:1466-8033
DOI:10.1039/d1ce00844g