Electrodeposition and characterization of HgSe thin films

T. Mahalingam, A. Kathalingam, C. Sanjeeviraja, R. Chandramohan, J. P. Chu, Yong Deak Kim, S. Velumani

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In this article we present the results on the electrochemical synthesis of mercury selenide (HgSe), an interesting II-VI material. HgSe thin films were deposited potentiostatically on conducting glass substrates from an aqueous bath containing HgCl2 and SeO2. The prepared films were characterized by X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX), scanning electron microscope (SEM) and optical absorption techniques. Stoichiometric polycrystalline HgSe films were obtained at a deposition potential around - 0.7 V vs SCE, at a temperature 60 °C and a pH value of 3.5. The as-grown films exhibited a direct optical band gap of 0.78 eV. This report deals with the growth mechanism and a study related to the influence of electrolyte bath composition, deposition potential, temperature and pH on the properties of HgSe thin films.

Original languageEnglish
Pages (from-to)735-739
Number of pages5
JournalMaterials Characterization
Volume58
Issue number8-9 SPEC. ISS.
DOIs
StatePublished - Aug 2007

Keywords

  • Electrodeposition
  • Mercury selenide
  • Semimetals
  • Thin films

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