Bandgap tailoring in CdxZn1 − xS alloy films deposited by successive ionic layer adsorption and reaction

Ashith VK, Gowrish K. Rao

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The paper reports tailoring of the optical bandgap in SILAR deposited CdxZn1-xS alloy films. Acetates and chlorides of zinc and cadmium were used to obtain the films. Two separate routes were employed to achieve desired alloy composition in the films. In the first route, the molar concentration of the precursors was varied. In the second route; various volumes of precursors (with fixed concentration) were used. The films were polycrystalline with predominant hexagonal phase. The bandgap of the films varied from 2.4 eV to 3.5 eV. This bandgap range is highly optimum for the window layer in solar cells and other optoelectronic applications. Variation in the bandgap was studied as a function of alloy composition. The bowing parameter of the bandgap variation was found to be different for two routes chosen to deposit the films.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalThin Solid Films
Volume626
DOIs
Publication statusPublished - 31-03-2017

Fingerprint

Energy gap
Adsorption
adsorption
routes
Zinc Acetate
Cadmium Chloride
Bending (forming)
Optical band gaps
Chemical analysis
Cadmium
Optoelectronic devices
cadmium
acetates
Solar cells
Zinc
Deposits
zinc
solar cells
chlorides
deposits

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "The paper reports tailoring of the optical bandgap in SILAR deposited CdxZn1-xS alloy films. Acetates and chlorides of zinc and cadmium were used to obtain the films. Two separate routes were employed to achieve desired alloy composition in the films. In the first route, the molar concentration of the precursors was varied. In the second route; various volumes of precursors (with fixed concentration) were used. The films were polycrystalline with predominant hexagonal phase. The bandgap of the films varied from 2.4 eV to 3.5 eV. This bandgap range is highly optimum for the window layer in solar cells and other optoelectronic applications. Variation in the bandgap was studied as a function of alloy composition. The bowing parameter of the bandgap variation was found to be different for two routes chosen to deposit the films.",
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Bandgap tailoring in CdxZn1 − xS alloy films deposited by successive ionic layer adsorption and reaction. / VK, Ashith; Rao, Gowrish K.

In: Thin Solid Films, Vol. 626, 31.03.2017, p. 1-8.

Research output: Contribution to journalArticle

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