Effects of alkaline-earth metal oxides and heat treatment on the structure and cyan-luminescence properties of Bi3+-doped SiO2-MO-Y2O3-ZnO-ZrO2-Ga2O3 (M = Ca, Sr, Ba) glass and Y2Zr2O7 transparent glass-ceramic

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-08-19 DOI:10.1016/j.jeurceramsoc.2025.117758

Jianshan Yang, Zhiwei Luo, Haozhang Liang, Nanshan Ma, Xiangtao Lin, Yu Li, Juxia Tong, Xianjun Feng, Tingxiao Wu

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引用次数: 0

Abstract

Parent glasses with the composition of 55SiO₂-22MO-6Y₂O₃-8ZnO-5.5ZrO₂-3.5Ga₂O₃- 1Bi₂O₃(M = Ca, Sr, Ba, mol%) were prepared. After heat treatment, glass-ceramics containing Y₂Zr₂O₇ crystal were obtained. The increase in the atomic number of alkaline-earth metals favors the crystallization in the glass. Under the optimum excitation wavelength of 340 nm, the emission peak exhibits a redshift. The emission intensity reaches a maximum value when BaO is introduced. As the heat treatment temperature rises and time extends, the diffraction peak intensity of the glass-ceramics enhances, with significant grain agglomeration occurring. The optimal heat treatment regime is nucleation at 780 °C for 10 h, followed by crystallization at 830 ℃ for 4 h. Under this regime, the emission intensity is 2.75 times that of the parent glass. The glass-ceramics are promising candidates for WLEDs, with the emission spectra fully covering the 480–520 nm range at an ideal intensity and chromaticity coordinates falling within the cyan region.

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碱土金属氧化物和热处理对Bi3+掺杂SiO2-MO-Y2O3-ZnO-ZrO2-Ga2O3 （M = Ca, Sr, Ba）玻璃和Y2Zr2O7透明玻璃陶瓷结构和青色发光性能的影响

制备了由55SiO2-22MO-6Y2O3-8ZnO-5.5ZrO2-3.5Ga2O3- 1Bi2O3（M = Ca, Sr, Ba, mol%）组成的母玻璃。经过热处理，得到了含Y2Zr2O7晶体的微晶玻璃。碱土金属原子序数的增加有利于玻璃中的结晶。在340 nm的最佳激发波长下，发射峰出现红移。当引入BaO时，发射强度达到最大值。随着热处理温度的升高和时间的延长，微晶玻璃的衍射峰强度增强，晶粒团聚现象明显。最佳热处理方式是780℃下成核10 h，然后在830℃下结晶4 h。在此制度下，发射强度是母玻璃的2.75倍。玻璃陶瓷是wled的理想候选材料，其发射光谱完全覆盖480-520 nm范围，具有理想的强度和色度坐标落在青色区域内。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.