3D-Architected Alkaline-Earth Perovskites.
basic_science · Level V
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- Record sourced from PubMed, PMID 37793118.
- Also identified by DOI 10.1002/adma.202307077.
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Abstract
3D ceramic architectures are captivating geometrical features with an immense demand in optics. In this work, an additive manufacturing (AM) approach for printing alkaline-earth perovskite 3D microarchitectures is developed. The approach enables custom-made photoresists suited for two-photon lithography, permitting the production of alkaline-earth perovskite (BaZrO<sub>3</sub> , CaZrO<sub>3</sub> , and SrZrO<sub>3</sub> ) 3D structures shaped in the form of octet-truss lattices, gyroids, or inspired architectures like sodalite zeolite, and C<sub>60</sub> buckyballs 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<sub>3</sub> , CaZrO<sub>3</sub> , and SrZrO<sub>3</sub> . From a broad perspective, this AM methodology facilitates the production of 3D-structured mixed oxides. These findings are the first steps toward dimensionally refined high-refractive-index ceramics for micro-optics and other terrains like (photo/electro)catalysis.