3D-Architected Alkaline-Earth Perovskites.

Three-dimensional (3D) ceramic architectures are captivating geometrical features with an immense demand in photonics. Here, we develop an additive manufacturing (AM) approach for printing alkaline-earth perovskite 3D microarchitectures. The newly developed approach enables custom-made photoresists suited for two-photon lithography, permitting the production of alkaline-earth perovskite (BaZrO 3 , CaZrO 3, and SrZrO 3 ) 3D structures shaped in the form of octet-truss lattices, gyroids or inspired architectures like sodalite zeolite, and C 60 buckyball with micrometric and nanometric feature sizes. Alkaline-earth perovskite morphological, structural, and chemical characteristics are studied. The optical properties of such perovskite architectures are investigated using cathodoluminescence and wide-field photoluminescence emission to estimate the lifetime rate and defects in BaZrO 3 , CaZrO 3, and SrZrO 3 . From a broad perspective, our AM methodology facilitates the production of 3D-structured mixed oxides. Our findings are the first steps toward dimensionally-refined high refractive index ceramics for micro-optics and other terrains like (photo)catalysis. This article is protected by copyright. All rights reserved.