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Updated: Jul 26, 2025
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Published on: February 27, 2017
Elusive Double Perovskite Iodides: Structural, Optical, and Magnetic Properties
Greggory T Kent1, Emily Morgan1, Kaitlin R Albanese1,2
1Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA.
Abstract:
Halide double perovskites [A2 MI MIII X6 ] 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 Cs2 NaLnI6 (Ln=Ce, Nd, Gd, Tb, Dy). The complete crystal structures, structural phase transitions, optical, photoluminescent, and magnetic properties of these compounds are reported.
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