Applied Physics A

, 122:589 | Cite as

Tailoring of ZnO with selected group-II elements for LED materials

  • Murtaza Saleem
  • Adnan Manzoor
  • Mohammed Zaffar
  • Syed Zajif Hussain
  • M. Sabieh Anwar
Article

Abstract

The semiconductor ZnO is a promising candidate for its applications in light-emitting diodes. In this study ZnO nanostructures tailored with selected group-II elements were synthesized using sol–gel-based fuel-agent-assistive chemical technique. Structural studies from X-ray diffraction analysis revealed the presence of wurtzite hexagonal crystal structure in all compositions confirming the stability of the Mg-doped structure while indicating presence of some traces of un-reacted and oxides of Sr and Ba in other compositions. Lattice parameters, crystallite size, lattice strain, density, and cell volume were extracted from X-ray diffraction data. Morphology and elemental composition analysis showed exact correlation with structural arrangements. The size of particles was also observed with dynamic light-scattering measurements. Absorbance and electrical transport studies were performed using UV–Vis spectrophotometry and four-probe measurements, respectively; the former was used to estimate the band gap of nanostructures. Energy-dispersive X-ray analysis was employed for confirming the substitution of Mg, Sr, and Ba atoms at Zn and O sites. Band gap values show strong dependence upon the tailored ZnO compositions.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Murtaza Saleem
    • 1
  • Adnan Manzoor
    • 2
  • Mohammed Zaffar
    • 2
  • Syed Zajif Hussain
    • 3
  • M. Sabieh Anwar
    • 1
  1. 1.Department of Physics, Syed Babar Ali School of Science and Engineering (SBASSE)Lahore University of Management Sciences (LUMS)D.H.A. LahorePakistan
  2. 2.Department of PhysicsMirpur University of Science and Technology (MUST)MirpurPakistan
  3. 3.Department of Chemistry, Syed Babar Ali School of Science and Engineering (SBASSE)Lahore University of Management Sciences (LUMS)D.H.A. LahorePakistan

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