Temperature Promotes Photoluminescence in Lanthanide‐Doped 3D Ceramic Microarchitectures

• DOI: 10.1002/admi.202400339
• Publication Date: 2024-09-12T22:45:34Z
• Authors: Cristian Rosero‐A...; Geraldo Cristian ...; Noelia Geraldine ...; Jedrzej Winczewski; Bastian Mei; Israel De Leon; David Maestre; Han Gardeniers; Alan Aguirre‐Soto; Arturo Susarrey‐Arce
• Keywords: rare‐earth, ZrO2; Technology; metal‐organic monomers; Physics; QC1-999; T; photoluminescence; ceramics; additive manufacturing

Abstract Two‐photon lithography (TPL) is a powerful technique for creating 3D microarchitectures. Applied to high‐refractive‐index materials like ZrO 2 , it promises advanced optics. This the case of host matrixes in combination with luminescent dopants. However, due nonideal crystallinity attained TPL pre‐ceramic replica from custom‐made photoresin, emission lanthanide (Ln) dopants microarchitectures can be suboptimal. exacerbated by annealing promote Ln‐emission, thereby enabling integration ceramic micro‐optic into low‐temperature process. work presents photoresin containing metal‐organic monomer tailored TPL, fabrication Ln‐doped tetragonal ( t ‐ZrO ) The properties trivalent Ln ions (Ln 3+ ), i.e., Yb (2.5 mol%), Er (0.35 and Tm mol%) are studied. results demonstrate that absent when at 600 °C. Annealing 750 °C activates emissions, including F 5/2 – 7/2 (infrared), 4 S 3/2 I 15/2 (green), 3 H 6 (near‐infrared) transitions corresponding Yb, Er, species. Transmission electron microscopy (TEM) confirms becomes more prominent °C, demonstrating promotion emissions upon thermal treatment underscoring role crystalline micro‐optical ceramics.