The one phonon Raman spectrum in microcrystalline silicon,Solid State Communications |
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The one phonon Raman spectrum in microcrystalline silicon,Solid State Communications
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Abstract The red shift and the broadening of the Raman signal from microcrystalline silicon films is described in terms of a relaxation in the q-vector selection rule for the excitation of the Raman active optical phonons. The relationship between width and shift calculated from the known dispersion relation in c-Si is in good agreement with available data. An increase in the decay rate of the optical phonons predicted on the basis of the same model is confirmed experimentally.
中文翻译：
摘要 来自微晶硅薄膜的拉曼信号的红移和展宽是根据用于激发拉曼有源光学声子的 q 向量选择规则中的弛豫来描述的。从 c-Si 中已知的色散关系计算出的宽度和位移之间的关系与现有数据非常吻合。实验证实了基于相同模型预测的光学声子衰减率的增加。 |
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