Hybrid Iodide Perovskites of Divalent Alkaline Earth and Lanthanide Elements

Greggory T Kent; Jiale Zhuang; Kaitlin R Albanese; Arava Zohar; Emily Morgan; Anna Kallistova; Linus Kautzsch; Alexander A Mikhailovsky; Pratap Vishnoi; Ram Seshadri; Anthony K Cheetham

doi:10.1021/jacs.3c11494

Hybrid Iodide Perovskites of Divalent Alkaline Earth and Lanthanide Elements

J Am Chem Soc. 2023 Dec 20;145(50):27850-27856. doi: 10.1021/jacs.3c11494. Epub 2023 Dec 9.

Authors

Affiliations

¹ Materials Department and Materials Research Laboratory, University of California, Santa Barbara, California 93106, United States.
² Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States.
³ New Chemistry Unit and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India.
⁴ Department of Materials Science & Engineering, National University of Singapore, 117576, Singapore.

PMID: 38069813
DOI: 10.1021/jacs.3c11494

Abstract

Hybrid halide perovskites AM^IIX₃ (A = ammonium cation, M^II = divalent cation, X = Cl, Br, I) have been extensively studied but have only previously been reported for the divalent carbon group elements Ge, Sn, and Pb. While they have displayed an impressive range of optoelectronic properties, the instability of Ge^II and Sn^II and the toxicity of Pb have stimulated significant interest in finding alternatives to these carbon group-based perovskites. Here, we describe the low-temperature solid-state synthesis of five new hybrid iodide perovskites centered around divalent alkaline earth and lanthanide elements, with the general formula AM^III₃ (A = methylammonium, MA; M^II = Sr, Sm, Eu, and A = formamidinium, FA; M^II = Sr, Eu). Structural, calorimetric, optical, photoluminescence, and magnetic properties of these materials are reported.