Ceramic perovskites via sol–gel processing: progress, challenges, and applications
摘要
Perovskite-type ceramic materials represent a highly versatile class of functional oxides with applications spanning electronics, energy conversion, catalysis, and environmental remediation. Among the available synthesis strategies, sol–gel processing offers distinct advantages, including molecular-level compositional control, low-temperature crystallization, and the ability to tailor complex architectures. This review consolidates recent progress in sol–gel synthesis of ceramic perovskites, emphasizing the interplay between structural features, phase stability, and performance optimization through doping, nanostructuring, and templating. Particular attention is given to mechanistic insights into sol–gel chemistry, from hydrolysis–condensation kinetics to gel-to-perovskite phase transitions, and their implications for microstructure engineering. The review also addresses emerging approaches for scalable manufacturing, such as advanced templating and low-thermal-budget processing, and critically evaluates current challenge including phase purity, scalability, and environmental impact while outlining future research directions for translating sol–gel-derived perovskites into next-generation functional devices.