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 language | English |
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Pages (from-to) | 735-739 |
Number of pages | 5 |
Journal | Materials Characterization |
Volume | 58 |
Issue number | 8-9 SPEC. ISS. |
DOIs | |
State | Published - Aug 2007 |
Keywords
- Electrodeposition
- Mercury selenide
- Semimetals
- Thin films