Growth analysis of electrodeposited CdS on ITO coated glass using atomic force microscopy

M. Rami, E. Benamar, M. Fahoume, A. Ennaoui

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Cadmium sulphide polycrystalline thin films were deposited under potentiostatic control on indium tin oxide (ITO) coated glass substrate from an acidic solution containing cadmium chloride and sodium thiosulphate. Voltammograms were recorded to determine the optimal potential region for the co-deposition of CdS. The deposition was carried out for various cathodic potentials and bath temperatures. The structural, morphological, compositional, and optical properties of the films have been investigated. XRD patterns show that the films deposited at room bath temperature are amorphous, whereas those deposited at higher temperature are crystallized in the hexagonal structure. The thermal annealing of the deposits at T = 400 °C for 10 min in air improves the crystallinity and decreases the band gap value from 2.52 to 2.4 eV. EDAX analysis of CdS films deposited at E = -640 mV vs. SCE reveals a ratio of Cd/S close to unity. Different stages of CdS growth on ITO substrates were observed ex-situ by atomic force microscopy (AFM). The electrodeposition of CdS films has been observed to occur in two stages: laterally along the substrate plane, then perpendicularly in the normal plane. Complete conformal coverage was observed at low thickness values.

Original languageEnglish
Pages (from-to)137-147
Number of pages11
JournalPhysica Status Solidi (A) Applied Research
Volume172
Issue number1
Publication statusPublished - Mar 1999
Externally publishedYes

Fingerprint

Tin oxides
indium oxides
Indium
tin oxides
Atomic force microscopy
atomic force microscopy
Glass
glass
baths
Substrates
Cadmium chloride
cadmium chlorides
Cadmium Chloride
Cadmium sulfide
cadmium sulfides
Electrodeposition
electrodeposition
Temperature
rooms
Energy dispersive spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Growth analysis of electrodeposited CdS on ITO coated glass using atomic force microscopy. / Rami, M.; Benamar, E.; Fahoume, M.; Ennaoui, A.

In: Physica Status Solidi (A) Applied Research, Vol. 172, No. 1, 03.1999, p. 137-147.

Research output: Contribution to journalArticle

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