perovskitederived

Perovskite-derived is a descriptor used in materials science to refer to compounds that adopt, closely derive from, or are inspired by the perovskite structure. In its broad use, it covers materials whose crystal framework is based on the corner-sharing octahedra motif common to ABX3 perovskites, but which differ through substitutions, dimensional reduction, or ordering that yields related structures.

Common families include layered perovskites, such as Ruddlesden–Popper and Dion–Jacobson phases, where slabs of corner-sharing BX6 octahedra are separated by bulky cations. Double perovskites, with formula A2BB'X6, replace the single B site with two different cations arranged in an ordered fashion, producing lead-free halide variants like Cs2AgBiBr6. In oxide chemistry, perovskite-derived derivatives arise from substituting A- or B-site cations or introducing oxygen vacancies, giving materials with modified ferroelectric, catalytic, or oxide-ionic properties.

The term also encompasses mixed-anion or mixed-valence systems and solid solutions designed to improve stability, bandgap, or environmental impact relative to conventional lead halide perovskites. Synthesis typically involves solution growth for organic–inorganic halide derivatives or solid-state routes for oxides, with structural confirmation by X-ray diffraction and imaging by electron microscopy.

Applications of perovskite-derived materials span photovoltaics, light emission, photodetection, and catalysis. Research emphasizes tuning dimensionality, cation/anion ordering, and compositional engineering to balance performance, stability, and toxicity. The concept serves as a bridging term between classic perovskites and a broader family of structurally related compounds.