Wettability behavior, photoluminescence and optical properties studies of nanostructured vanadium-doped magnesium oxide thin films: an effect of V concentrations

Nourmohammadian Mohammadreza; Kalangestani F. Chharganeh

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Wettability behavior, photoluminescence and optical properties studies of nanostructured vanadium-doped magnesium oxide thin films: an effect of V concentrations

机译：Wettability behavior, photoluminescence and optical properties studies of nanostructured vanadium-doped magnesium oxide thin films: an effect of V concentrations

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A study on the optical properties and photoluminescence (PL) spectra of doped Magnesium oxide thin films revealed that the change in dopant concentration could direct the roadmap to improve the characteristics of the films. In FTIR analysis, Mg-O vibrational modes were exposed for all samples. V-doping also caused changes in the intensity, shape and position of the peaks in the FTIR pattern. In XRD analysis, the crystallite size was about half the crystallite size in the MgO film with the addition of V-doping, and the amount of strain also increased. FESEM images showed that the surface of MgO thin film had hollows and surface discontinuities with spherical grains. With adding V dopant, the grain size decreases and their number increases. The water contact angle measurements showed that surface hydrophobicity decreased with increasing surface non-uniformity. In the UV-NIR transmittance spectra, the absorption edge shifted slightly to larger wavelengths (red-shift) by adding V dopant. The optical band gap of magnesium oxide thin film with vanadium doping decreased from 3.72 eV to 3.60 eV. PL spectra for MgO thin film showed a prominent peak in the UV region due to the recombination emission of electrons and holes. The apparition of sub-band can be attributed to vacancies for MgO, known as F-s, F-s(+) and F-s(2+) (color centers). GRAPHICS .

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《Optical and Quantum Electronics》 |2023年第1期|共16页
作者
Nourmohammadian Mohammadreza; Kalangestani F. Chharganeh;
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作者单位

Univ Zanjan;

Univ Guilan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学;
关键词
MgO thin film; Doping; Photoluminescence properties; Hydrophobic; MGO; SURFACE; TEMPERATURE; DEPOSITION; MORPHOLOGY; CENTERS; O-2(-);

Wettability behavior, photoluminescence and optical properties studies of nanostructured vanadium-doped magnesium oxide thin films: an effect of V concentrations

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