Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

ŞENOL S. D., BOYRAZ C., Özuğurlu E., GÜNGÖR A., ARDA L.

CRYSTAL RESEARCH AND TECHNOLOGY, cilt.54, sa.3, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 54 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1002/crat.201800233
  • Dergi Adı: CRYSTAL RESEARCH AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: hydrothermal method, magnetic properties, nanorod, optical properties, zinc oxide, ELECTRICAL-PROPERTIES, OPTICAL-PROPERTIES, NANOSTRUCTURES, MGXZN1-XO, ESR
  • Marmara Üniversitesi Adresli: Evet

Özet

The effect of band gap on the structure, magnetic, and optical properties of Zn1-xMgxO nanorods synthesized by hydrothermal method using varying x-values from 0.00 to 0.05 with 0.01 step increment is studied. The structural phases of Zn1-xMgxO samples are determined by X-ray diffraction tool. The Rietveld analysis is performed for the selected Zn0.95Mg0.05O sample and all samples' phases are found as single phase. The concentration-dependent of lattice parameters, cell volumes, microstrain, and dislocation density, locality of the atoms and their displacement, and bond length in Zn1-xMgxO structures are detailed. Electron Spin Resonance (ESR) measurements are performed and analyzed through concentration dependence of the g-factor and the line-widths of pike to pike (Delta H-PP) of ESR spectra. A ferromagnetic behavior of the Zn0.95Mg0.05O nanorods is observed. The optical band gaps (E-g) of Zn1-xMgxO nanorods are obtained by the data taken from Ultraviolet-Visible (UV-VIS) diffuse reflectance spectroscopy. It is found that the E-g-values increased with increasing amount of Mg elements in the structure.