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FT-IR and XPS analysis of a-Si_(1-x)Ge_x:H thin films

机译:a-Si_(1-x)Ge_x:H薄膜的FT-IR和XPS分析

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Silicon-Germanium alloys have been prepared in an evacuated fused silica tube, and by thermal evaporation amorphous Si_(1-x)Ge_x:H thin films were deposited at different preparation conditions such as deposition temperature (T_d), dopant concentration of aluminum (Al) and arsenic (As) and Ge content (x). Fourior transform infrared (FT-IR) investigations showed the existence of all the expected stretching and bending modes of (Si-H)_n and (Ge-H)_n. The X-ray photoemission spectroscopy (XPS) exhibited the existence of oxygen:carbon and hydrogen atoms on the Si-Ge surface which led to a shift in Si-2p and Ge-3p core level for pure and doped a-Si_(1-x)Ge_x:H thin films with aluminum and arsenic.
机译:已在真空石英管中制备了硅锗合金,并通过热蒸发在不同的制备条件下沉积了非晶Si_(1-x)Ge_x:H薄膜,例如沉积温度(T_d),铝的掺杂剂浓度(Al ),砷(As)和锗含量(x)。傅里叶变换红外(FT-IR)研究表明(Si-H)_n和(Ge-H)_n所有预期的拉伸和弯曲模式均存在。 X射线光电子能谱(XPS)显示在Si-Ge表面上存在氧:碳和氢原子,这导致纯净和掺杂的a-Si_(1- x)Ge_x:H铝和砷薄膜。

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