Morphological and thermal properties of β-SnS2 sprayed thin films using Boubaker polynomials expansion
Morphological and thermal properties of β-SnS2 sprayed thin films using Boubaker polynomials expansion
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DOI：
10.1016/j.jallcom.2008.10.051
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发表时间：
2009-05
影响因子：
6.2
通讯作者：
C. Khélia;K. Boubaker;T. B. Nasrallah;M. Amlouk;S. Belgacem
中科院分区：
文献类型：
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作者：
C. Khélia;K. Boubaker;T. B. Nasrallah;M. Amlouk;S. Belgacem
本文采用喷雾热解法，以SnCl 4和硫脲（SC（NH 2）2）为前驱体，在玻璃衬底上制备了β-SnS 2薄膜。结构研究表明，在衬底温度Ts=280°C，喷涂液中硫和锡元素的浓度比x=[S]/[Sn]=2.5的最佳实验条件下制备的β-SnS 2薄膜为六方晶相，具有较强的（001）X射线衍射线。以同样的方式，微探针分析（EPMA）以及X-射线光电子能谱（XPS）表明存在的undiserable相的SnO 2。从透射和反射光谱，带隙能量为2.65eV。另一方面，研究了这种薄膜的光热性质，热导率为Kc=0.85Wm− 1 K − 1，热扩散率为Dc=14.5×10− 6 m2 s −1。本文讨论了β-SnS_2薄膜的光偏转光谱分析，包括表面不均匀性（粗糙度）和体相不均匀性（空气夹杂、SnO_2第二相）的影响。
In this work, β-SnS2thin films have been prepared on glass substrates by the spray pyrolysis technique using an alcohol solution which contains tin chloride (SnCl4) and thiourea (SC(NH2)2) as precursors. The structural study shows that β-SnS2thin film prepared using optimal experimental conditions: substrate temperature Ts=280°C and the concentration ratio of sulfur and tin elements in the spray solution x=[S]/[Sn]=2.5, crystallizes in the hexagonal phase with a strong (001) X-ray diffraction line. In the same way, microprobe analyses (EPMA) as well as X-ray photoelectron spectroscopy (XPS) show the presence of undiserable phase of SnO2. From the transmission and reflectance spectra, the band gap energy is 2.65eV. On the other hand, the photothermal properties of such films have been studied, the thermal conductivity was Kc=0.85Wm−1K−1and the thermal diffusivity was Dc=14.5×10−6m2s−1. The analysis of β-SnS2thin films via the photodeflection spectroscopy including the effect of the inhomogeneity at the surface (roughness) and in the bulk (air inclusion, secondary phase of SnO2) have been discussed for future investigations.