Effects of La Dopant on Nanocluster Size and Optical Band Gap of CdO Films Prepared by Sol-Gel Method

• Authors: Z. Alahmed , Z. Serbetçi , F. Yakuphanoglu
• Languages of publication: EN

Abstracts

EN

The undoped and lanthanum doped cadmium oxide thin films were prepared by sol-gel method. The CdO films were doped with various percentages of La, 0.1, 0.5, 1, and 2 at.%. We have investigated the structural properties of the CdO films by atomic force microscopy. The obtained results show that both the grain size and the surface roughness of CdO films reduce with increase of La doping content. Additionally, the result shows a significant decrease of the transmittance in the range of 300 to 500 nm with increase of La doping level. The optical band gap of CdO films increases with La doped CdO films. It was found that the band gaps to be 2.25, 2.36, 2.4, 2.28, and 2.31 eV for La contents with 0.1, 0.5, 1, and 2 at.% doped CdO, respectively.

Keywords

EN

78.20.Ci; 78.67.-n; 81.20.Fw

Discipline

• 78.20.Ci: Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
• 81.20.Fw: Sol-gel processing, precipitation(for reactions in sol-gels, see 82.33.Ln; for sol-gels as disperse system, see 82.70.Gg)
• 78.67.-n: Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures(for magnetic properties of nanostructures, see 75.75.-c; for electronic transport in nanoscale structures, see 73.63.-b; for mechanical properties of nanoscale systems, see 62.25.-g)

• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 1
• Pages: 125-127

Dates

published

2013-07

received

2013-02-20

(unknown)

2013-03-27

Contributors

author

Z. Alahmed

• Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia

author

Z. Serbetçi

• Department of Chemistry, Bingöl University, Bingöl, Turkey

author

F. Yakuphanoglu

• Department of Physics, Faculty of Science, Firat University, Elazig 23169, Turkey

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Identifiers

DOI

10.12693/APhysPolA.124.125