Optical and structural properties of ZnO + Zn2TiO4 thin films prepared by the sol–gel method

被引：0

作者：

Sandra A. Mayén-Hernández

Gerardo Torres-Delgado

Rebeca Castanedo-Pérez

Mario Gutiérrez Villarreal

Alfredo Cruz-Orea

Julio G. Mendoza Alvarez

Orlando Zelaya-Angel

机构：

[1] Centro de Investigación y de Estudios Avanzados del I. P. N.,Depto. de Física

[2] Unidad Querétaro,undefined

[3] Centro de Investigación en Química Aplicada,undefined

[4] Centro de Investigación y de Estudios Avanzados del I.P.N,undefined

来源：

Journal of Materials Science: Materials in Electronics | 2007年 / 18卷

关键词：

TiO2; In2O3; Precursor Solution; Optical Absorption Spectrum; IrO2;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

ZnO + Zn2TiO4 thin films were obtained by the sol–gel method using precursor solutions with different Ti/Zn ratios in the 0.18–2.13 range. The films were deposited on glass substrates and annealed in an open atmosphere at 550 °C. The oxide was characterized by X-ray diffraction and photoacoustic (PA) spectroscopy. The films were constituted of polycrystalline ZnO for the lowest Ti/Zn ratio (0.18), polycrystalline Zn2TiO4 for the 0.70 and 1.0 ratios, and mixes of both oxides for the intermediate ratios (0.32 and 0.50). For the highest ratios studied (1.44 and 2.13), the films were amorphous. The energy band gap (Eg) values were determined from optical absorption spectra, measured by means of the PA technique spectra. Eg varied in the 3.15 eV (ZnO) to 3.70 eV (Zn2TiO4) range.

引用

页码：1127 / 1130

页数：3

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