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| 1 | 白光LED用稀土离子掺杂硼硅酸盐玻璃的发光性能(英文)显示文摘用熔体淬冷法在空气中制备了稀土(Tm,Dy,Tb,Eu)离子单掺和共掺的硼硅酸盐发光玻璃。研究了制得玻璃的发射光谱和激发光谱特性。结果表明:Eu离子单掺玻璃的发射光谱中出现了Eu2+和Eu3+的特征发射带,证明在此玻璃系统中,有部分Eu3+转化为Eu2+。Eu3+→Eu2+的转化效率与玻璃基质中B2O3的含量和网络调整体的类型有关,并且Eu2+的发射峰随玻璃基质中碱土离子半径的增大而出现红移。Eu/Dy和Tm/Tb/Eu共掺的硼硅酸盐玻璃的发射光谱中出现蓝、黄/绿、红发射带。这些发射带的复合可以使玻璃在紫外光激发下产生白光,并且各发射带的强度比例可以通过改变玻璃基质的组成来调节,表明所制备的稀土离子掺杂硼硅酸盐发光玻璃有可能取代荧光粉应用于制备白光发光器件。 | 朱超峰 杨云霞 梁晓峦 袁双龙 陈国荣 | 2007 | 硅酸盐学报2007，35，10： | 6 |
| 2 | Sm^(3+)∶SiO_2 Optical Thin Film Prepared by Sol-Gel Process显示文摘Sm3+∶SiO_2 thin film with high concentration of Sm3+ was prepared by sol-gel method using tetraethoxysilane(TEOS) as precursor and using the appropriate system of hydrolyzing-condensing and organic additives, and controlling the velocity of promoting temperature during the heat treatment. Research was done on the luminescence spectra of the gel with different concentrations of Sm3+ by fluorescence spectra analysis. The results showed that, the emission intensity of Sm3+ became stronger with increasing the doping concentration when the concentration was below 10% in the gel; the optimum excitation wavelength of Sm3+ in the gel was 473 nm, the emission peak position were at 561, 594, 643, 703 nm, which was caused from, respectively, 4G5/2-6H5/2, 4G5/2-6H7/2, 4G5/2-6H9/2, 4G5/2-6H11/2 transition of Sm3+; and the emission intensity of the gel with organic additive DMF was elevated evidently. | 谭伟民 陆春华 张焱 倪亚茹 许仲梓 | 2007 | Journal of Rare Earths2007，25，S1： | 0 |
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