Investigating the property of water driven lead-free stable inorganic halide double perovskites

Lead free halide double perovskite materials, A(2)BBX(6) (where A, B and B are cations and X is a halide anion) have achieved considerable attention in the field of optoelectronic devices due to their high ther-mal along with the moisture stability and less toxicity as lead halide perovskites suffer from the stability and toxicity issues which inhibit them to be commercialized. Therefore, synthesis of low cost and stable perovskite materials are the main focus of perovskite family nowadays. Herein, we have reported lead free Cs2AgBiCl6 and Cs2AgBiBr6 double perovskite microcrystals in both organic and a mixture of the aqueous-organic medium. Our studies are not only eradicating the toxicity of lead but also explored towards the stability of perovskite materials in the aqueous medium. Morphology is investigated using SEM and TEM imaging along with the enhancement in emission peak by increasing the content of water. (C) 2020 Elsevier Inc. All rights reserved.