International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology


Effect of Complexing Agent (Tea) on Chemically Deposited Silver Selenide Thin Films

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Author N. A. OKEREKE, I. A. EZENWA, A .J. EKPUNOBI
On Pages 155-158
Volume No. 2
Issue No. 3
Issue Date April, 2012
Publishing Date April, 2012
Keywords Thin films, Silver selenide, Chemical bath deposition, Complexing agent, Characterization


Abstract

Thin films of silver selenide have been prepared by chemical bath deposition technique at substrate temperature of 300K. The films were characterized by X-ray diffraction and UV-VIS spectrophotometer. Silver selenide thin films are polycrystalline with orthorhombic structure, confirmed by x-ray diffractogram. The deposition parameters were optimized to obtain good quality thin films. The film deposited with 10.0ml TEA showed good uniformity, good surface coverage with bigger grains and produced higher absorbance value. The band gap energy varies with the variation of TEA concentration which ranged from 2.00eV - 2.15 eV. Deposition at concentration of 10.0ml TEA proved to offer a reasonably good Ag2Se thin film. The quality of thin film is influenced by the presence of complexing agents.

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