White emission in 3D-printed phosphor microstructures

Winczewski, J.P.; Herrera, Manuel; Gardeniers, Han; Susarrey-Arce, Arturo

doi:10.1039/d2cc06953a

Cited by 7 publications

(12 citation statements)

References 31 publications

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“…The X‐ray powder diffraction (XRD) measurements for the BZO (Figure S4, Section S2.1., Supporting Information) feature the reflections distinctive of cubic phase barium zirconate ( c ‐BaZrO 3 ). [ 35 ] The main identified impurity is orthorhombic barium sulfate ( o ‐BaSO4), and minor amounts of monoclinic zirconia ( m ‐ZrO 2 ) are found. In CZO powder synthesized from the equimolar amount of Ca‐ and Zr‐rich monomers, besides orthorhombic calcium zirconate ( o ‐CaZrO 3 ), a significant amount of impurities, for example, orthorhombic calcium sulfate ( o ‐CaSO 4 ) and tetragonal zirconia ( t ‐ZrO 2 ) are observed in Section S2.2., Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

“…[33] Alternatively, salts can be introduced to the photoresist to yield, that is, Y 3 Al 5 O 12, [34] or dope ZrO 2 with lanthanides. [24,35] The true uniqueness of such an approach is the possibility of tuning the chemical composition of resulting ceramics. From the previous examples, it is fair to say that there is an uttermost interest in elaborating solutions enabling the accurate structuring of complex oxide systems, like perovskites in 3D, to stimulate the thriving interfacing of material sciences in AM and overarch other science domains, like ceramic micro-optics.…”

Section: Introductionmentioning

confidence: 99%

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3D‐Architected Alkaline‐Earth Perovskites

Winczewski,

Arriaga Dávila,

Herrera‐Zaldívar

et al. 2024

Advanced Materials

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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 (BaZrO3, CaZrO3, and SrZrO3) 3D structures shaped in the form of octet‐truss lattices, gyroids or inspired architectures like sodalite zeolite, and C60 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 BaZrO3, CaZrO3, and SrZrO3. 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

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D‐Architected Alkaline‐Earth Perovskites

Winczewski,

Arriaga Dávila,

Herrera‐Zaldívar

et al. 2024

Advanced Materials

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“…The ZnAc is trapped in the 3D microstructured prototype, similar to, e.g., lanthanide acetates or zinc nitrate used in previous studies. [4,6] It should be noted that Zn salts may substitute sites in the ZrO 2 matrix or oxidize to ZnO to form a multiphase composite.…”

Section: Additive Manufacturing Of the Zro 2 :Zn 3d Microarchitecturesmentioning

confidence: 99%

“…[2] Introducing substitutional impurities in the ZrO 2 crystal lattice is a promising route from a defect chemistry perspective. [6,[21][22][23][24] DOI: 10.1002/adem.202400187…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Zn‐Doped ZrO₂ Architectures

Winczewski,

Arriaga‐Dávila,

Maestre

et al. 2024

Adv Eng Mater

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Tailoring the properties of microfabricated ceramics through doping can unlock new avenues for the additive manufacturing (AM) of advanced three‐dimensional (3D) architectures. The first step to achieving optical functionality is to control material morphology, crystallinity, and defects associated with the composition of the produced AM architecture and dopants. For this purpose, AM of zinc‐doped zirconia (ZrO2:Zn) 3D microarchitectures are proposed using two‐photon lithography and tailor‐made resin. It is found that Zn doping modulates ZrO2:Zn architecture crystallinity and optical properties. The modification of optical properties through Zn doping is confirmed by micro‐photoluminescence, where higher energy photon emission is observed due to the promotion of oxygen vacancies and surface defects. It is also shown that Zn 2.5% and 5 wt.% stabilizes the monoclinic ZrO2 at a lower temperature than in the case of undoped ZrO2. Furthermore, we have evidence that Zn tends to form ZnO wurtzite, which is later sublimated. Our findings provide a promising route to understand the role of defects ZrO2:Zn optically upon annealing.This article is protected by copyright. All rights reserved.

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“…Advances in fabrication technology enable the production of artificially engineered geometries of arbitrary shape with desired functionalities, such as low‐weight structures with increased mechanical strength, [ 1 ] plasmonic structures for sensing, [ 2 ] light‐emitting structures for light management in optoelectronics, [ 3,4 ] scaffold‐like structures to direct cell growth [ 5–9 ] and structured electrochemical systems for high energy storage and conversion. [ 10–12 ] The cited work shares a similar endowment in terms of multiscale fabrication of geometrical architectures, typically accomplished using micro(nano)fabrication [ 13,14 ] or additive manufacturing (AM).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensing with Spatially Patterned Pt Octahedra Electrodes

Jonker,

Eyovge,

Berenschot

et al. 2024

Adv Materials Technologies

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Locally controlling the position of electrodes in 3D can open new avenues to collect electrochemical signals in complex sensing environments. Implementing such electrodes via an electrical network requires advanced fabrication approaches. This work uses corner lithography and Pt ALD to produce electrochemical 3D electrodes. The approach allows the fabrication of (sub)micrometer size Pt octahedra electrodes spatially supported over 3D fractal‐like structures. As a proof of concept, electrochemical sensing of ferrocyanide in biofouling environments, e.g., bovine serum albumin (BSA) and Pseudomonas aeruginosa (P. aeruginosa), is assessed. Differences between before and after BSA addition show a reduction in the active electrode surface area (ΔAeff) ≈49% ± 7% for the flat electrode. In comparison, a ΔAeff reduction of 25% ± 2% for the 3D electrode has been found. The results are accompanied by a 24% ± 16% decrease in peak current for the flat Pt substrate and a 14% ± 5% decrease in peak current for the 3D electrode 24 h after adding BSA. In the case of P. aeruginosa, the 3D electrode retains electrochemical signals, while the flat electrode does not. The results demonstrate that the 3D Pt electrodes are more stable than their flat counterparts under biofouling conditions.

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White emission in 3D-printed phosphor microstructures

Abstract: Microscale functional materials permit advanced applications in optics and photonics. This work presents the additive manufacturing of three-dimensional structured phosphors emitting red, green, blue, and white. The development of 3D...

Cited by 7 publications

References 31 publications

3D‐Architected Alkaline‐Earth Perovskites

3D‐Architected Alkaline‐Earth Perovskites

Additive Manufacturing of Zn‐Doped ZrO₂ Architectures

Electrochemical Sensing with Spatially Patterned Pt Octahedra Electrodes

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White emission in 3D-printed phosphor microstructures

Abstract: Microscale functional materials permit advanced applications in optics and photonics. This work presents the additive manufacturing of three-dimensional structured phosphors emitting red, green, blue, and white. The development of 3D...

Cited by 7 publications

References 31 publications

3D‐Architected Alkaline‐Earth Perovskites

3D‐Architected Alkaline‐Earth Perovskites

Additive Manufacturing of Zn‐Doped ZrO2 Architectures

Electrochemical Sensing with Spatially Patterned Pt Octahedra Electrodes

Contact Info

Product

Resources

About

Additive Manufacturing of Zn‐Doped ZrO₂ Architectures