Optical characteristics of Er~(3+)-doped Ge nanocrystals in sol-gel-derived SiO_2 glass

K Das; V Nagarajan; M L NandaGoswami

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Optical characteristics of Er~(3+)-doped Ge nanocrystals in sol-gel-derived SiO_2 glass

机译：溶胶-凝胶法制得的SiO_2玻璃中掺Er〜（3+）的Ge纳米晶体的光学特性

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Ge nanocrystals embedded in bulk SiO_2 glasses were prepared by the sol-gel process. Er~(3+) ions of controlled composition were incorporated into the glasses to investigate the emission properties of the 1.54 mu m line. The size of the Ge nanocrystals was found to vary from 5 to 10 nm. XRD and Raman measurements showed the formation of crystalline Ge in SiO_2 matrix. Elemental composition of Ge and Er in the samples was determined by RBS analysis. Various absorption edges in the optical spectra of the samples due to the atomic transition of Er~(3+) ions were detected. The samples exhibited intense emissions at 1.54 mu m in the presence of Ge nanocrystals.

机译：采用溶胶-凝胶法制备了包埋在SiO_2玻璃中的Ge纳米晶。将受控组成的Er〜（3+）离子掺入玻璃中以研究1.54μm谱线的发射特性。发现Ge纳米晶体的尺寸在5至10nm之间变化。 XRD和拉曼测量表明在SiO_2基体中形成了结晶Ge。通过RBS分析确定样品中Ge和Er的元素组成。检测了样品中Er〜（3+）离子的原子跃迁引起的光谱吸收边缘的变化。在Ge纳米晶体的存在下，样品在1.54μm处表现出强烈的发射。

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《Nanotechnology》 |2007年第9期|共5页
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K Das; V Nagarajan; M L NandaGoswami;
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1. Optical characteristics of Er~(3+)-doped Ge nanocrystals in sol-gel-derived SiO_2 glass [J] . K Das, V Nagarajan, M L NandaGoswami Nanotechnology . 2007,第9期

机译：溶胶-凝胶法制得的SiO_2玻璃中掺Er〜（3+）的Ge纳米晶体的光学特性
2. XRD and EXAFS studies on the structure of Er~(3+)-doped SiO_2–HfO_2 glass-ceramic waveguides: Er~(3+)-activated HfO_2 nanocrystals [J] . N D Afify, G Dalba, F Rocca Journal of Physics, D. Applied Physics: A Europhysics Journal . 2009,第11期

机译：XRD和EXAFS研究Er〜（3+）掺杂SiO_2–HfO_2玻璃陶瓷波导的结构：Er〜（3+）活化的HfO_2纳米晶体
3. Ion-exchanged optical waveguides fabricated in novel Er~(3+) and Er~(3+)/Yb~(3+)-doped silicate glasses: Relations between glass composition, basicity and waveguide properties [J] . B. Svecova, J. Spirkova, S. Janakova, Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing . 2008,第2期

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Optical characteristics of Er~(3+)-doped Ge nanocrystals in sol-gel-derived SiO_2 glass

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