Synthesis and characterization of zinc stannate nanomaterials by Sol-gel method

被引：7

作者：

Bhabu, K. Amarsingh ^{[1
]}

Theerthagiri, J. ^{[2
]}

Madhavan, J. ^{[2
]}

Balu, T. ^{[3
]}

Rajasekaran, T.R. ^{[1
]}

机构：

[1] Department of Physics, Manonmaniam Sundaranar University, Tirunelveli, 627 012, Tamilnadu

[2] Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, Tamilnadu

[3] Department of Physics, Aditanar college of Arts and Science, Tiruchendur, 628 216, Tamilnadu

来源：

Materials Science Forum | 2015年 / 832卷

关键词：

Impedance; Nanostructures; Photo luminescence; Sol-gel; XRD;

D O I：

10.4028/www.scientific.net/MSF.832.144

中图分类号：

学科分类号：

摘要：

In this work, zinc stannate (Zn2SnO4) nanomaterials were synthesized as a composite system of zinc oxide and tin oxide by sol-gel via hydrolysis process for 60 hours. The effect of annealing temperature on the structural, optical and electrical performances of zinc stannate nanomaterials has been studied. XRD studies revealed that zinc stannate possess spinel cubic crystal structure and their growth in the preferred orientation (311) with characteristic temperature. The surface morphology of the zinc stannate nanomaterials were obtained by scanning electron microscope (SEM). EDAX and FTIR studies were employed to determine the chemical compositions and functional groups of the zinc stannate respectively. The optical properties of the hydrolysed zinc stannate were analysed by UV-visible and photoluminescence spectroscopy. UVvis spectra were associated to the optical bandgap with a tunable range of 3.17-3.92 eV. PL spectra exhibit the stable broad blue-green emission around 400-600 nm with various excitation wavelengths. Complex impedance spectra reveal that the resistivity of the prepared zinc stannate nanomaterials is in the order of ~ 105 Ω Cm. Hence, zinc stannate is a promising candidate for DSSC applications. © (2015) Trans Tech Publications, Switzerland.

引用

页码：144 / 157

页数：13

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