色度
光致发光
荧光粉
材料科学
分析化学(期刊)
发光
拉曼光谱
兴奋剂
光致发光激发
玻璃陶瓷
陶瓷
色温
发射光谱
紫外线
离子
光电子学
谱线
光学
化学
复合材料
物理
有机化学
色谱法
天文
作者
Zhiguang Cui,Renguang Ye,Degang Deng,Hua Yang,Shilong Zhao,Guohua Jia,Chenxia Li,Shiqing Xu
标识
DOI:10.1016/j.jallcom.2010.12.058
摘要
Eu2+/Sm3+ co-doped silicate glass was prepared by high temperature melting under reducing atmosphere and the Eu2+/Sm3+ co-doped SrSiO3 transparent glass-ceramics were obtained after heat-treatment. X-ray diffraction (XRD) and Raman spectra confirmed the formation of SrSiO3 nano-crystals in the glass matrix. The photoluminescence excitation (PLE) spectra and photoluminescence (PL) spectra of the samples were measured. A broad emission band from 400 nm to 550 nm due to the 4f65d1 → 4f7 transitions of Eu2+ was observed, as well as several sharp emission peaks at 563 nm, 600 nm, 646 nm and 713 nm ascribed to the 4f → 4f transitions of Sm3+. The luminescence properties of the glass ceramics with different molar ratio of Eu2+/Sm3+ were studied and the corresponding chromaticity coordinates were calculated. The ultraviolet light-emitting diode (UV-LED) excitable glass-ceramics emitting white light were obtained by tuning the relative emission intensity of Eu2+ and Sm3+. The results indicate that the Eu2+/Sm3+ co-doped SrSiO3 transparent glass-ceramics can be used as a potential matrix material for White LED under UV-LED excitation.
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