Optical and structural study of electrodeposited zinc selenide thin films

This paper reports a study of the electrodeposition of ZnSe on Pt electrodes in a sulfuric acid solution at pH2.0 with the purpose of producing stoichiometric films. The film's properties were evaluated for different Zn/Se ratios. The films were deposited at different potentials (−0.2, −0.5, −0...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2016-11, Vol.780, p.360-366
Main Authors: Gromboni, Murilo F., Mascaro, Lucia H.
Format: Article
Language:English
Subjects:
Electrodeposition
Photocurrent
Photoelectric effect
Photoelectric emission
Scanning electron microscopy
Selenium
Semiconductors
Stoichiometry
Sulfuric acid
Thin films
X-ray diffraction
X-ray fluorescence
Zinc selenide
Zinc selenite
Zn-Se
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Summary:This paper reports a study of the electrodeposition of ZnSe on Pt electrodes in a sulfuric acid solution at pH2.0 with the purpose of producing stoichiometric films. The film's properties were evaluated for different Zn/Se ratios. The films were deposited at different potentials (−0.2, −0.5, −0.7 and −0.9V) and characterized by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), X-ray Fluorescence (XRF) and non-contact 3D optical profilometry (3D-OP). Band gap, photocurrent, carrier number and flat-band potentials were determined. The films with higher photocurrent, carrier number, and crystallinity were obtained at −0.9V; these films were p-type and presented 1:1 stoichiometry. [Display omitted]
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2016.04.037