Influence of Dip Cycles on the Structural, Optical and Morphological Properties of CdS-SILAR Deposited Thin Films

Autori

  • Kester Osasele Ighodalo University of Nigeria, Nsukka, Enugu State, Nigeria
  • Tochukwu M. Emeakaroha University of Nigeria, Nsukka, Enugu State, Nigeria
  • Blessing N Ezealigo University of Nigeria, Nsukka, Enugu State, Nigeria
  • Kenneth Iluore University of Nigeria, Nsukka, Enugu State, Nigeria

Parole chiave:

Thin films, SILAR, SEM, XRD, UV-VIS.

Abstract

Cadmium sulphide (CdS) thin films were deposited on a glass substrate by a relatively simple and cost effective successive ionic layer adsorption and reaction (SILAR) method at temperature 80ºC at different deposition cycles. For a fine nanocrystalline thin film growth, the parameters include concentrations of cationic and ionic precursors, number of immersion cycles, and the immersion time. A study was made to know how dip cycles affects the structural, surface morphological and optical properties of the film using X-ray diffraction (XRD), EDAX, scanning electron microscopy (SEM) and UV-VIS (ultraviolet visible) spectrophotometer. The deposited CdS thin films were found to be greenockite αCdS film with a strong preferred orientation along the (002) plane exhibit hexagonal phase with optical band gaps between 2.38 and 2.70eV. The band gap with a value to a certain extent larger than the distinctive value of the bulk CdS (2.42 eV), can be ascribed to quantum confinement effects due to the nanometer crystallite size of the CdS thin films.  Keyword: Thin films, SILAR, SEM, XRD, UV-VIS Cite this Article Kester O. Ighodalo, Tochukwu M. Emeakaroha, Blessing N. Ezealigo, et al. Influence of dip cycles on the structural, optical and morphological properties of CdS-SILAR deposited Thin Films. Journal of NanoScience, NanoEngineering & Applications. 2016; 6(3): 19–26p.

Biografie autore

  • Kester Osasele Ighodalo, University of Nigeria, Nsukka, Enugu State, Nigeria
      Ighodalo Kester Osasele, is a research student at the University of Nigeria, He holds a B.Sc degree in Physics and Solar Energy (Nigeria), M.Sc. in Solar Energy Physics (Nigeria) and M.Sc. (Mobility) in Experimental Physics (Portugal). He is also a solar physicist and an academia with experience in renewable energy, material science, and solar technology fields respectively. 
  • Blessing N Ezealigo, University of Nigeria, Nsukka, Enugu State, Nigeria
    Blessing (popularly known as ‘Mega-B’) is a postgraduate student at University of Nigeria, Nsukka. She has a great passion for excellence encompassing academics and entrepreneurship. “I believe in success with integrity; one can be successful if they work at it with the appropriate principles, persons and information, and also refusing to give up”- that’s my motto in life. 

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Pubblicato

2016-12-05

Fascicolo

V. 6 N. 3 (2016)

Sezione

Research Articles

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