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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Spectral analysis of a novel Eu~(2+) activated SiO_2-BaO glass ceramics phosphor under UV-LED excitation
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Spectral analysis of a novel Eu~(2+) activated SiO_2-BaO glass ceramics phosphor under UV-LED excitation

机译：UV-LED激发下新型Eu〜（2+）活化SiO_2-BaO玻璃陶瓷荧光粉的光谱分析

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摘要

A novel Eu~(2+) activated 60SiO2-40BaO (mol%) glass ceramics phosphor was prepared and the optical properties were investigated. X-ray diffraction (XRD) and Raman spectra confirmed the formation of Ba _2Si_3O_8 nano-crystals in the glass matrix. The Eu~(2+) activated glass ceramics exhibited broad emission band centered at 518 nm due to the 4f65d~1→4f~7 transition of Eu~(2+). Compared with the glass, the emission intensity of Eu ~(2+) activated glass ceramics was much stronger, and the peak wavelength shifted toward shorter wavelength. The photoluminescence excitation (PLE) spectra of the glass ceramics showed an overlap with the main emission region of an ultraviolet light-emitting diode (UV-LED). According to the photoluminescence (PL) spectra, the CIE chromaticity coordinates of the Eu ~(2+) activated glass and glass ceramics were calculated. The results indicated that the Eu~(2+) activated glass ceramics containing Ba _2Si_3O_8 nano-crystals can be used as a potential green emitting phosphor under UV-LED excitation.
机译：制备了新型的Eu〜（2+）活化的60SiO2-40BaO（mol％）玻璃陶瓷荧光粉，并对其光学性能进行了研究。 X射线衍射（XRD）和拉曼光谱证实了在玻璃基质中形成了Ba _2Si_3O_8纳米晶体。由于Eu〜（2+）发生4f65d〜1→4f〜7跃迁，Eu〜（2+）活化玻璃陶瓷呈现出以518 nm为中心的宽发射带。与玻璃相比，Eu〜（2+）活化玻璃陶瓷的发射强度要强得多，并且峰值波长向较短波长移动。玻璃陶瓷的光致发光激发（PLE）光谱显示与紫外发光二极管（UV-LED）的主发射区域重叠。根据光致发光（PL）光谱，计算了Eu〜（2+）活化玻璃和玻璃陶瓷的CIE色度坐标。结果表明，含有Ba _2Si_3O_8纳米晶体的Eu〜（2+）活化玻璃陶瓷可以作为潜在的绿色荧光粉在UV-LED激发下。

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