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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0046

    • Keywords

       

      FeS$_x$O$_y$; chemical bath deposition; tartaric acid; optimum temperature; oxygen.

    • Abstract

       

      Iron-sulphide-oxide (FeS$_x$O$_y$) thin films were prepared on fluorine-tin-oxide (FTO)-coated glass substrate for 3-h-deposition times via chemical bath deposition (CBD) from an aqueous solution, containing 100 mM sodium thiosulphate (Na$_2$S$_2$O$_3$), 30 mM iron (II) sulphate heptahydrate (FeSO$_4$.7H$_2$O) and 50 mM L(+)-tartaric acid (C$_4$H$_6$O$_6$) as the complexing agent. The effects of bath temperature (45–90°C) on FeS$_x$O$_y$ film properties including optical, structural, impurities, composition and surface morphology were studied. Characterization equipment, such as scanning electron microscopy equipped with energy dispersive X-ray spectroscopy: thickness estimated from the cross-section image, surface morphology and composition; X-ray diffraction: crystallinity/amorphous; Raman spectra: impurities; UV–vis spectroscopy: transmittance and bandgap estimation; and Hot Probe method: photoresponse, has been used in analysing the properties of the deposited films. The optimum bath temperature of 75°C has resulted in better film quality in terms of compactness, uniformity and crystallinity (larger crystallite size). All the deposited films exhibited n-type photoresponse with a large bandgap of 3.36–3.57 eV, which could be associated with crystallinity (crystallite size), phase purity and high oxygen content (>50%).

    • Author Affiliations

       

      PARVIN ASOGAN1 ADRIAN AFZAL ARIFF1 AIZUDDIN SUPEE1 2 RAFIZIANA MD KASMANI1 2 NORAZANA IBRAHIM1 2 MOHD AKHMAL MUHAMMAD SIDEK1 2 MOHD ZAMRI MOHD YUSOP3 ABD KHAMIM ISMAIL4

      1. Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
      2. 2Energy Management Group, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
      3. Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
      4. Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia

    • Dates

       
      Published
      4 March 2023
      Manuscript received
      21 June 2022
      Accepted
      25 October 2022
      Final version published online
      4 March 2023

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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