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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 >Optical and electrical properties of Tl-S glasses
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Optical and electrical properties of Tl-S glasses

机译：Tl-S眼镜的光电性能

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The frequency and temperature dependence of ac conductivity and optical absorption have been measured for four Tl-S glasses, TlS, Tl2S3, TlS2 and Tl2S5, prepared by a melt-quenching method. The ac conductivity has been measured over a frequency range 0.1 Hz to 1.8 GHz and a temperature range 190-273 K. The optical absorption was measured at room temperature over a wavelength range 200-2600 nm. We have determined the electrical and optical band gaps from the experimental results. For each glass, the electrical band gap is larger than the optical band gap and the difference increases with increasing sulfur concentration. The frequency dependence of ac conductivity varies with composition of the glasses. We suggest that these results are due to an increase of localized states in the band gap with increasing sulfur concentration. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 14]
机译：已经测量了通过熔融淬火方法制备的四种T1-S玻璃T1S，Tl2S3，TlS2和Tl2S5的交流电导率和光吸收的频率和温度依赖性。已在0.1 Hz至1.8 GHz的频率范围和190-273 K的温度范围内测量了ac导电率。在室温下，在200-2600 nm的波长范围内测量了光吸收。我们已经根据实验结果确定了电气和光学带隙。对于每种玻璃，带隙大于光学带隙，并且差随着硫浓度的增加而增加。交流电导率的频率依赖性随玻璃的成分而变化。我们建议这些结果是由于随着硫浓度的增加带隙中的局部状态增加。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：14]

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