Affiliation:
1. Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
2. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
3. New Chemistry Unit and International Centre for Materials Science Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bangalore 560064 India
4. Department of Materials Science & Engineering National University of Singapore 117576 Singapore Singapore
Abstract
AbstractHalide double perovskites [A2MIMIIIX6] are an important class of materials that have garnered substantial interest as non‐toxic alternatives to conventional lead iodide perovskites for optoelectronic applications. While numerous studies have examined chloride and bromide double perovskites, reports of iodide double perovskites are rare, and their definitive structural characterization has not been reported. Predictive models have aided us here in the synthesis and characterization of five iodide double perovskites of general formula Cs2NaLnI6 (Ln=Ce, Nd, Gd, Tb, Dy). The complete crystal structures, structural phase transitions, optical, photoluminescent, and magnetic properties of these compounds are reported.
Funder
Basic Energy Sciences
National Science Foundation