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00925njm 22002777a 4500 dc Rosero Arias, Cristian author Vásquez Villanueva, Geraldo Cristian author Herrera Zaldívar, Manuel author Córdova-Castro, R. Margoth author De León, Israel author Ruiz Zepeda, Francisco author Gardeniers, Han author Maestre Varea, David author Aguirre Soto, Alan author Susarrey Arce, Arturo author 2025-04-04 Lanthanide-doped ZrO2 ceramics are promising materials for optics due to their high refractive index and tunable luminescent properties. In this study, we investigated the impact of Yb3+ and Er3+ dopant concentrations on the emission behavior of lanthanide-doped 3D ZrO2 microarchitectures fabricated using two-photon lithography. Thermal treatments have been carried out at 600 degrees C and 750 degrees C to promote the stabilization of the ZrO2 tetragonal phase (t-ZrO2) and at 1000 degrees C to induce phase transition in ZrO2 to the monoclinic (m-ZrO2) phase in the 3D microarchitectures. Scanning transmission electron microscopy confirmed the crystallinity changes across the thermal treatments. Photoluminescence (PL) and cathodoluminescence (CL) measurements confirm emission bands of Yb3+ and Er3+ single dopants and Yb3+:Er3+ co-dopants. Variations in Yb3+ content reveal that the PL emission of Er3+ increases (e.g., 4S3/2 -> 4I15/2), which is attributed to the interplay between the dopant concentrations, defect structures and the ZrO2 host. The results highlight the importance of ZrO2microarchitectures' crystallinity and co-doping relationship, which enable the promotion of Er3+ emissions. We expect our research will find applications in 3D optical systems. C. Rosero-Arias, G.C. Vásquez, M. Herrera-Zaldívar, R.M. Córdova-Castro, I. De Leon, F. Ruiz-Zepeda, H. Gardeniers, D. Maestre, A. Aguirre-Soto, A. Susarrey-Arce, Yb3+-Mediated Luminescence Enhancement in Er3+-Doped 3D-Printed ZrO2 Microarchitectures, Applied Materials Today 44 (2025) 102714. https://doi.org/10.1016/j.apmt.2025.102714. 2352-9407 10.1016/j.apmt.2025.102714 https://hdl.handle.net/20.500.14352/131157 2352-9415 https://doi.org/10.1016/j.apmt.2025.102714 https://www.sciencedirect.com/science/article/pii/S2352940725001337?via%3Dihub Yb3+ mediated luminescence enhancement in Er3+ doped 3D-printed ZrO2 microarchitectures