Transparent rare earth-doped gallium oxide ceramics with oriented microstructure

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2024-09-16 DOI:10.1111/jace.20121

Jiao Li, Guangran Zhang, Yiquan Wu

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引用次数: 0

Abstract

Gallium oxide (Ga₂O₃) has attracted much attention due to its promising applications in optical and electronic devices, while it is difficult to fabricate high-quality Ga₂O₃ transparent ceramics because of the non-cubic crystal structure. In this work, fully densified undoped and rare earth (RE = Tb, Dy. Er)-doped Ga₂O₃ transparent ceramics were successfully fabricated by using spark plasma sintering (SPS) and co-precipitated ceramic powders. Both the powders and ceramics showed pure monoclinic β- Ga₂O₃ crystal structure and unique orientation. After sintering by SPS for 30 min, all the ceramics reached a relative density higher than 99.21%. The total transmittance of RE-doped Ga₂O₃ transparent ceramics ranges from 60% to 69% originating from the oriented and dense microstructures. The photoluminescence spectra and fluorescence lifetime of RE-doped Ga₂O₃ transparent ceramics confirm characteristics of energy transfers corresponding to Tb³⁺, Dy³⁺, or Er³⁺ ions in the visible and NIR spectral region. This study demonstrates that oriented RE-doped Ga₂O₃ transparent ceramics have great potential to be used in various optical applications.

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具有定向微结构的透明稀土掺杂氧化镓陶瓷

氧化镓（Ga2O3）因其在光学和电子设备中的应用前景而备受关注，但由于其非立方晶体结构，很难制造出高质量的 Ga2O3 透明陶瓷。在这项工作中，利用火花等离子烧结（SPS）和共沉淀陶瓷粉末，成功制备了完全致密的未掺杂和稀土（RE = Tb、Dy、Er）掺杂的 Ga2O3 透明陶瓷。粉末和陶瓷都呈现出纯单斜β- Ga2O3 晶体结构和独特的取向。经 SPS 烧结 30 分钟后，所有陶瓷的相对密度均高于 99.21%。掺杂了 RE 的 Ga2O3 透明陶瓷的总透射率在 60% 至 69% 之间，这源于其取向和致密的微结构。掺杂了 RE 的 Ga2O3 透明陶瓷的光致发光光谱和荧光寿命证实了在可见光和近红外光谱区与 Tb3+、Dy3+ 或 Er3+ 离子相对应的能量转移特征。这项研究表明，定向掺杂 RE 的 Ga2O3 透明陶瓷在各种光学应用中具有巨大的应用潜力。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.