Eco-friendly water-synthesis of lead-free Cs₂AgBiBr₆ perovskites

Communications Materials, 7, 232 (2026)

David Nieto-Castro; Ariel Nonato; Rosivaldo Silva; Breogán Pato-Doldán; Amira Abdellattef; Antonio L. Llamas-Saiz; L. Claudia Gómez-Aguirre

This work, with collaboration of Túlio Rocha (LNLS/CNPEM), introduce an eco-friendly, solvent-free water-synthesis route for lead-free Cs₂AgBiBr₆ perovskite powders and films. Using a combination of XRD, SEM and synchrotron based XPS and XRF and optical spectroscopy they demonstrate stable cubic perovskites with tunable optical gaps, offering a greener route toward optoelectronic and photovoltaic applications.

Correspondence: tulio.rocha@lnls.br