NDLI: Intrinsic Doping in Electrodeposited ZnS Thin Films for Application in Large-Area Optoelectronic Devices

Content Provider	Springer Nature Link
Author	Madugu, Mohammad Lamido Olusola, Olajide Ibukun Olu Echendu, Obi Kingsley Kadem, Burak Dharmadasa, Imyhamy Mudiy
Copyright Year	2016
Abstract	Zinc sulphide (ZnS) thin films with both n- and p-type electrical conductivity were grown on glass/fluorine-doped tin oxide-conducting substrates from acidic and aqueous solution containing ZnSO$_{4}$ and (NH$_{4}$)$_{2}$S$_{2}$O$_{3}$ by simply changing the deposition potential in a two-electrode cell configuration. After deposition, the films were characterised using various analytical techniques. X-ray diffraction analysis reveals that the materials are amorphous even after heat treatment. Optical properties (transmittance, absorbance and optical bandgap) of the films were studied. The bandgaps of the films were found to be in the range (3.68–3.86) eV depending on the growth voltage. Photoelectrochemical cell measurements show both n- and p-type electrical conductivity for the films depending on the growth voltage. Scanning electron microscopy shows material clusters on the surface with no significant change after heat treatment at different temperatures. Atomic force microscopy shows that the surface roughness of these materials remain fairly constant reducing only from 18 nm to 17 nm after heat treatment. Thickness estimation of the films was also carried out using theoretical and experimental methods. Direct current conductivity measurements on both as-deposited and annealed films show that resistivity increased after heat treatment.
Starting Page	2710
Ending Page	2717
Page Count	8
File Format	PDF
ISSN	03615235
Journal	Journal of Electronic Materials
Volume Number	45
Issue Number	6
e-ISSN	1543186X
Language	English
Publisher	Springer US
Publisher Date	2016-01-05
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	n-Type and p-type ZnS thin film electrodeposition intrinsic doping amorphous Optical and Electronic Materials Characterization and Evaluation of Materials Electronics and Microelectronics, Instrumentation Solid State Physics
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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