Crystallization kinetics and blue-light fluorescence characteristics of transparent ZnO-Ga2O3–SiO2 glass-ceramics containing ZnGa2O4 nanocrystals
Crystallization kinetics and blue-light fluorescence characteristics of transparent ZnO-Ga2O3–SiO2 glass-ceramics containing ZnGa2O4 nanocrystals
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DOI：
10.1016/j.optmat.2022.112382
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发表时间：
2022-06
影响因子：
3.9
通讯作者：
Ping Zhang;Zhiwei Luo;Songxuan Liu;Weicheng Lei;Haozhang Liang;Ziyou Zhou;A. Lu
中科院分区：
文献类型：
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作者：
Ping Zhang;Zhiwei Luo;Songxuan Liu;Weicheng Lei;Haozhang Liang;Ziyou Zhou;A. Lu
采用熔体急冷法制备了不同Ga/Zn摩尔比的SiO_2-Ga_2O_3-ZnO-Al_2 O_3-NaF-Na_2 O玻璃，并采用“一步”控制晶化法制备了微晶玻璃。采用DSC、XRD、TEM和荧光光谱等方法研究了不同Ga/Zn摩尔比微晶玻璃的析晶动力学、晶体结构和荧光性能。微晶玻璃中析出ZnGa 2 O 4尖晶石结构的单晶相，Ga 2 O3取代ZnO后，晶粒尺寸由原来的约87 nm减小到约6 nm。所制备的ZnGa 2 O 4微晶玻璃在350-650 nm范围内均能产生荧光发射，且发射峰形状随Ga/Zn摩尔比的变化而显著变化。CIE色度图表明ZnGa 2 O 4微晶玻璃可应用于蓝光显示器件领域。
SiO2-Ga2O3–ZnO–Al2O3–NaF–Na2O glasses with different Ga/Zn molar ratios have been prepared by the melt-quenching method, and glass-ceramics have been prepared by “one-step” controlled crystallization. The crystallization kinetics, crystal structure, and fluorescence properties of glass-ceramics with different Ga/Zn molar ratios have been studied by DSC, XRD, TEM, and fluorescence spectroscopy. The single-crystal phase with ZnGa2O4spinel structure was precipitated in the glass-ceramics, and the grain size decreases from ∼87 nm to ∼6 nm with Ga2O3replacing ZnO. The prepared ZnGa2O4glass-ceramics can produce fluorescence emission in the boundary of 350–650 nm, and the emission peak shape changes significantly with the change of Ga/Zn molar ratios. CIE chromaticity diagram shows that ZnGa2O4glass-ceramics can be applied in the field of blue light display devices.