Effect of Ethylenediamine Tetraacetic Acid in Electrochemical Deposition of Zinc Selenide

Abstract:

Zinc selenide based materials are suitable for fabrication of light emitting diodes operating in the blue-green light. In fabrication of zinc selenide films, electrodeposition method appears to be the simplest and low-cost technique. In this work, the application of ethylenediamine tetraacetic acid (EDTA) in electrodeposition of zinc selenide was investigated to evaluate its effect on the optical and electronic properties of the films. It was found that the presence of EDTA stabilized the cathodic over potential during deposition. The zinc selenide deposits consist of small grain size deposits which contribute to enhance the photoelectrochemical performance. Besides that, the zinc selenide films produced in the presence of EDTA also shows high photoluminescence intensity due to minimized surface defects on the glass substrate. The film shows photoluminescence peak at the blue region of wavelength due to its quantum confinement effect. The optical property of zinc selenide film was measured using ultraviolet-visible spectrophotometer. The band gap of zinc selenide is 2.65 eV with direct transition.

• Periodical: Advanced Materials Research (Volume 501)
• Pages: 231-235
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.501.231
• Online since: April 2012
• Authors: Sook Mey Ng, Zulkarnain Zainal, Mat Yunus Wan Mahmood
• Keywords: EDTA, Electro-Deposition, Semiconductor, Thin Film, Zinc Selenide

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