Structural, morphological, optical and electrical properties of spray deposited zinc doped copper oxide thin films
| Autor: | Mehnaz Sharmin, Khandker S. Hossain, A.H. Bhuiyan, Meherun Nesa |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Copper oxide Materials science Band gap Doping Analytical chemistry Mineralogy chemistry.chemical_element 02 engineering and technology Substrate (electronics) Zinc 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Optical conductivity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry 0103 physical sciences Crystallite Electrical and Electronic Engineering Thin film 0210 nano-technology |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 28:12523-12534 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-017-7075-3 |
| Popis: | Nanostructured spray deposited zinc (Zn) doped copper oxide (CuO) thin films were characterized by employing X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX), atomic force microscopy (AFM) and ultraviolet–visible–near infrared (UV–Vis–NIR) spectroscopy. XRD patterns of CuO and Zn doped CuO thin films indicated monoclinic structure with the preferred orientation along $$\left( {\bar 111} \right)$$ plane. Maximum value of crystallite size is found about 28.24 nm for 5 at% Zn doped CuO thin film. In FESEM images, nanoparticles were observed around the nucleation center. EDX analysis confirms the presence of all component elements in CuO and Zn doped CuO thin films. Analysis by AFM of CuO and Zn doped CuO thin films figured out decrease of surface roughness due to Zn doping. UV–Vis–NIR spectroscopy showed that CuO and Zn doped CuO thin films are highly transparent in the NIR region. Optical band gap of CuO thin films decreased with substrate temperature and that of Zn doped CuO thin films increased with Zn concentration. Refractive index of CuO and Zn doped CuO thin films raised with photon wavelength and became constant in the NIR region. 5 at% Zn doped CuO thin film showed the highest optical conductivity and the lowest electrical resistivity at room temperature. |
| Databáze: | OpenAIRE |
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