Affiliation:
1. Department of Physics University of Oxford Clarendon Laboratory Oxford OX1 3PU UK
2. Institute for Quantum Materials and Technologies Karlsruhe Institute of Technology 76021 Karlsruhe Germany
3. Diamond Light Source Harwell Science and Innovation Campus Didcot OX11 0DE UK
Abstract
AbstractOwing to the unique chemical and electronic properties arising from 3d‐electrons, substitution with transition metal ions is one of the key routes for engineering new functionalities into materials. While this approach has been used extensively in complex metal oxide perovskites, metal halide perovskites have largely resisted facile isovalent substitution. In this work, it is demonstrated that the substitution of Co2+ into the lattice of methylammonium lead triiodide imparts magnetic behavior to the material while maintaining photovoltaic performance at low concentrations. In addition to comprehensively characterizing its magnetic properties, the Co2+ ions themselves are utilized as probes to sense the local electronic environment of Pb in the perovskite, thereby revealing the nature of their incorporation into the material. A comprehensive understanding of the effect of transition metal incorporation is provided, thereby opening the substitution gateway for developing novel functional perovskite materials and devices for future technologies.
Funder
Engineering and Physical Sciences Research Council
Science and Technology Facilities Council
Subject
General Materials Science,General Chemistry