Sintering effects on Sm3+-doped willemite glass-ceramics: structural, mechanical, and optical studies

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-09-19 DOI:10.1016/j.optmat.2025.117540

Wei Mun Cheong , Mohd Hafiz Mohd Zaid , Khamirul Amin Matori , Zhi Wei Loh , Li Ping Tan , Jiaojiao Wang

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引用次数: 0

Abstract

Willemite glass-ceramics are promising for optoelectronic applications due to their compatibility with rare-earth dopants and stability. The use of sustainable raw materials such as glass waste further enhances their appeal in green material development. In this study, Sm³⁺-doped willemite glass-ceramics were synthesized from zinc-borosilicate glass using the melt and fast-quenching technique, followed by sintering, with soda-lime-silica glass waste serving as a substitute raw material for SiO₂. X-ray diffraction (XRD) demonstrated the development of α-Zn₂SiO₄ crystals above 800 °C. Energy-dispersive X-ray (EDX) analysis showed Sm concentrated in the glassy phase (4.65 wt%), with minimal incorporation in crystalline regions (∼0.25 wt%). Vickers hardness and fracture toughness reached maximum values of (5.61 ± 0.14) GPa and (2.91 ± 0.55) MPa∙m^1/2 when the sample was sintered at 800 °C. The optical absorption edge moved from 241 nm to 252 nm, and the direct band gap narrowed from (5.023 ± 0.003) eV to (4.451 ± 0.003) eV. Additionally, the sample sintered at 800 °C exhibited a 60.9 % increase in photoluminescence intensity compared to the as-synthesized glass. CIE chromaticity coordinates around (0.57, 0.42) and a CCT range of 1740–1810 K confirmed warm reddish-orange emission. These results highlight the material's potential as a sustainable reddish-orange phosphor for optoelectronic applications.

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Sm3+掺杂willeite微晶玻璃的烧结效应：结构、力学和光学研究

Willemite微晶玻璃由于其与稀土掺杂剂的相容性和稳定性，在光电子领域具有广阔的应用前景。使用可持续的原材料，如玻璃废料，进一步提高了它们在绿色材料发展中的吸引力。本研究以锌硼硅酸盐玻璃为原料，采用熔融快淬技术，以钠石灰硅玻璃废料为SiO2的替代原料，经烧结制备了掺杂Sm3+的锰酸盐微晶玻璃。x射线衍射（XRD）表明，α-Zn2SiO4晶体在800℃以上发育。能量色散x射线（EDX）分析显示，Sm集中在玻璃相中（4.65 wt%），在晶体区域中掺杂最少（~ 0.25 wt%）。在800℃烧结时，试样的维氏硬度和断裂韧性分别达到最大值（5.61±0.14）GPa和（2.91±0.55）MPa∙m1/2。光吸收边从241 nm移动到252 nm，直接带隙从（5.023±0.003）eV缩小到（4.451±0.003）eV。此外，在800°C下烧结的样品比合成玻璃的光致发光强度提高了60.9%。CIE色度坐标约为（0.57,0.42），CCT范围为1740-1810 K，证实了暖红橙色发射。这些结果突出了该材料作为光电应用中可持续的红橙色荧光粉的潜力。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.