Sol–Gel Preparation and Characterization of Tin-Doped Dimanganese Trioxide Thin Films

IF 2.4 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Molecular and Engineering Materials Pub Date : 2019-09-01 DOI:10.1142/s2251237319500084
B. Benrabah, Hadj Benhebal, Abdelmalek Kharroubi, M. Touati
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Abstract

This work shows an investigation of tin-doped Mn2O3 thin layers synthesized via sol–gel process and deposited on glass substrates using dip-coating technique. The Sn concentration was changed from 0% to 9%. The obtained samples were characterized by X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR), Ultraviolet–Visible spectroscopy (UV–Vis) and impedance spectroscopy (IS). XRD showed that Mn2O3 was crystallized in the cubic form with directionally preferential orientation structure (222). The formation of Mn2O3 was also confirmed by FTIR spectroscopy. The optical transmittance of the samples is greater than 70% and increases following doping, while the band gap energy decreases with an increase in Sn doping concentration. Complex IS indicates that the resulting circuit is a parallel RpCp where Cp is the capacitance of the layer and Rp its resistance.
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锡掺杂三氧化二锰薄膜的溶胶-凝胶法制备与表征
本文研究了通过溶胶-凝胶法制备锡掺杂的Mn2O3薄层,并利用浸涂技术沉积在玻璃基板上。Sn的浓度由0%变为9%。采用x射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、紫外可见光谱(UV-Vis)和阻抗光谱(IS)对所得样品进行了表征。XRD结果表明,Mn2O3呈立方体结晶,具有定向择优取向结构(222)。FTIR光谱也证实了Mn2O3的形成。样品的透光率大于70%,且随Sn掺杂浓度的增加而增大,带隙能量随Sn掺杂浓度的增加而减小。复IS表示所得到的电路是并联的RpCp,其中Cp为层的电容,Rp为层的电阻。
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Journal of Molecular and Engineering Materials
Journal of Molecular and Engineering Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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