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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 >Photo-induced phenomena in GeO2 glass
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Photo-induced phenomena in GeO2 glass

机译：GeO2玻璃中的光致现象

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摘要

Photo-induced changes in GeO2 glass have been studied in terms of its optical and structural properties. Band-gap excitation gives rise to modifications in mid-gap optical absorption and photo-luminescence spectra. It also produces electron-spin signals at g similar or equal to 1.995 and 2.008. Raman-scattering spectrum becomes sharper, X-ray diffraction patterns show a disappearance of a crystalline peak, and the illuminated surfaces expand. These observations can be accounted for by assuming bond transformations from rutile-like to defective quartz-like structures and/or from small to large rings. These photo-induced changes in GeO2 are discussed in comparison with those in SiO2 and GeS2. (c) 2006 Elsevier B.V. All rights reserved.
机译：已经根据GeO2玻璃的光学和结构特性研究了光诱导的变化。带隙激发引起中带隙光学吸收和光致发光光谱的改变。它还会产生g等于或等于1.995和2.008的电子自旋信号。拉曼散射光谱变得更锐利，X射线衍射图显示出结晶峰的消失，并且被照射的表面扩大。这些观察结果可以通过假设键从金红石状转变为有缺陷的石英状结构和/或从小到大的环而得到解释。与SiO2和GeS2中的光致变化相比，讨论了GeO2中的这些光致变化。 （c）2006 Elsevier B.V.保留所有权利。

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