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首页> 外文期刊>Journal of nano research >Effect of the Substrate Temperature on the Properties of SnO_2 Thin Films Prepared by Ultrasonic Spray for Solar Cells Applications
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Effect of the Substrate Temperature on the Properties of SnO_2 Thin Films Prepared by Ultrasonic Spray for Solar Cells Applications

机译：基材温度对太阳能电池应用超声波喷涂制备的SnO_2薄膜性能的影响

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摘要

Structural, optical properties of SnO2 thin films deposited by spray ultrasonic technique were investigated by varying substrate temperature. The structural characterization of the films was analyzed via X-ray diffraction (XRD) technique and transmission electron microscopy (TEM). These studies indicated that the layers were polycrystalline. Films surface morphologies were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Optical absorption spectrum was recorded using the UV-VIS-NIR spectroscopy and the films were found to be transparent. The optical transmittance varied with substrate temperature from 60-80% over a wide range of wavelength. Optical measurements showed that the layers had a relatively high absorption coefficient of 10(5) cm(-1). A shift in the absorption edge was observed and the films exhibited direct transitions with band gap energies ranging from 3.85 to 3.94 eV.
机译：通过不同的衬底温度研究了喷雾超声技术沉积的SnO2薄膜的结构的光学性质。通过X射线衍射（XRD）技术和透射电子显微镜（TEM）分析膜的结构表征。这些研究表明，层是多晶。通过扫描电子显微镜（SEM）和原子力显微镜（AFM）研究薄膜表面形态。使用UV-Vis-Nir光谱记录光学吸收光谱，发现薄膜是透明的。光学透射率在宽范围波长范围内的60-80％变化。光学测量表明，层具有10（5）厘米（-1）的相对高的吸收系数。观察到吸收边缘的换档，薄膜表现出直接过渡，带隙能量范围为3.85至3.94eV。

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