Thickness dependent photoelectrochemical performance of chemo-synthesized nanostructured CdS thin films

Sharadrao A. Vanalakar, Sawanta S. Mali, Mahesh P. Suryawanshi, Nilesh L. Tarwal, Ganesh L. Agawane, Kishor V. Gurav, Seung W. Shin, Annasaheb V. Moholkar, Jin H. Kim, Pramod S. Patil

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Thin films of cadmium sulfide (CdS) with different film thicknesses were chemo-synthesized onto soda lime glass and fluorine doped tin oxide (FTO) coated glass substrates. The synthesized CdS films were characterized by using UV-vis spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The XRD patterns revealed the formation of CdS with a cubic crystal structure. The variation in band gap energies was found to be in the range of 2.42-2.85 eV. An increase of 0.43 eV over the bulk band gap energy of CdS was found due to the quantum size effect in CdS thin films. The atomic force microscopy study depicted a novel egg-like morphology of CdS nanoparticles. Further, photoelectrochemical (PEC) performance of as grownCdS thin films was investigated using two electrode configurations in polysulfide electrolyte. The sample with filmthickness 1389 A showed the best PEC performance compared to other samples.

Original languageEnglish (US)
Pages (from-to)817-827
Number of pages11
JournalZeitschrift fur Physikalische Chemie
Volume228
Issue number8
DOIs
StatePublished - Aug 1 2014

Keywords

  • AFM
  • Cadmium sulfide
  • Nanoparticle size
  • Photoelectrochemical performance
  • XRD

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