White light emission with unity efficiency from Cs<sub>2</sub>Na<sub>1−<i>x</i></sub>Ag<sub><i>x</i></sub>In<sub>1−<i>y</i></sub>Bi<sub><i>y</i></sub>Cl<sub>6</sub>double perovskites: the role of bismuth and silver
Fang Liu, Angelica Simbula, Stefano Lai, Luyan Wu, Qingqian Wang, Daniela Marongiu, Riccardo Pau, Selene Matta, Federico Pitzalis, Alessandra Geddo Lehmann, Kai Wang, Alessio Filippetti, Francesco Quochi, Michele Saba, Andrea Mura, Giovanni Bongiovanni
Abstract
Lead-free double perovskites are ideal lighting materials, capable of white light emission with unity efficiency. We demonstrate that the key ingredients for efficient emission are bismuth and silver with at least 0.1% fraction each.
Topics & Concepts
Materials scienceBismuthWhite lightIdeal (ethics)CrystallographyOptoelectronicsMetallurgyEpistemologyChemistryPhilosophyPerovskite Materials and ApplicationsLuminescence Properties of Advanced MaterialsOptical properties and cooling technologies in crystalline materials