INVESTIGATING ANNEALING EFFECT ON OPTICAL PROPERTIES OFCd0.8Zn0.2STHIN FILMS

Somayeh Azizi, Hamid Rezagholipour Dizaji (), Mohammad Hossein Ehsani and Seyed Feyzolah Ghavami Mirmahalle
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Somayeh Azizi: Thin Film Laboratory, Faculty of Physics, Semnan University, Semnan, Iran
Hamid Rezagholipour Dizaji: Thin Film Laboratory, Faculty of Physics, Semnan University, Semnan, Iran
Mohammad Hossein Ehsani: Thin Film Laboratory, Faculty of Physics, Semnan University, Semnan, Iran
Seyed Feyzolah Ghavami Mirmahalle: Thin Film Laboratory, Faculty of Physics, Semnan University, Semnan, Iran

Surface Review and Letters (SRL), 2014, vol. 21, issue 05, 1-7

Abstract: Cd0.8Zn0.2Sthin films deposited on glass substrates by thermal evaporation method were annealed at different temperatures for the first time in order to investigate annealing effect on optical properties. The compositional, structural of nanoparticles precursor synthesized using microwave irradiation method and optical properties of the films were studied using energy dispersive X-ray (EDX), X-ray diffraction, transmission electron microscopy (TEM), and UV-visible spectrophotometer techniques. The annealed films were found to have hexagonal Wurtzite structure with strong preferential orientation along the (002) diffraction peak. Important optical parameters such as extinction coefficient and refractive index revealed the effect of heat treatment on the deposited thin layers. A reduction in the band gap energy from 2.41 eV to 2.29 eV was observed for the annealed samples.

Keywords: Heat treatment; nanoparticles; CdZnSthin films; refractive index; band gap (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500735

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