Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application

Nickel chalcogenides, NiX2(X=S,Se) thin films were successfully electrodeposited on indium-tin-oxide (ITO)-coated glass substrates. The deposition time for the thin films were set at 10 minutes to 30 minutes with an interval of 5 minutes. The thin films were characterized for their structural, morph...

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Main Author:	Rajes, K.M.Rajan
Format:	Thesis
Language:	English English
Published:	2014
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/16816/1/Synthesis%20And%20Characterization%20Of%20Electrodeposited%20Nickel%20Chalcogenides%20For%20Photoelectrochemical-Solar%20Cell%20Application.pdf http://eprints.utem.edu.my/id/eprint/16816/2/Synthesis%20and%20characterization%20of%20electrodeposited%20nickel%20chalcogenides%20for%20photoelectrochemical%20%20solar%20cell%20application.pdf
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spelling	my-utem-ep.168162022-06-13T12:41:10Z Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application 2014 Rajes, K.M.Rajan T Technology (General) TA Engineering (General). Civil engineering (General) Nickel chalcogenides, NiX2(X=S,Se) thin films were successfully electrodeposited on indium-tin-oxide (ITO)-coated glass substrates. The deposition time for the thin films were set at 10 minutes to 30 minutes with an interval of 5 minutes. The thin films were characterized for their structural, morphological and compositional characteristics. Their optical and semiconducting parameters were also analyzed in order to determine the suitability of the thin films for photoelectrochemical (PEC) / solar cell applications. Films were well adherent to the subtrates and grew up to thickness of ≈ 1.5μm. Structural analysis via X-Ray Diffraction (XRD) analysis reveals that films are polycrystalline with increasing intensity of XRD peaks in thicker films. Preferred orientation of (2 2 0) plane in NiS2 and (2 1 1) plane in NiSe2 was observed as the highest peak in spectrum. The surface morphology of the films determined by Scanning Electron Microscope (SEM) showed the growth of the films to be uniform and well covered for thinner films. However, at longer deposition times, the structure of the films start to break into grains (flakes) due to maximum grain stress point. Compositional analysis via Energy Dispersive X-ray (EDX) technique confirmed the presence of Ni, S, and Se elements in the films synthesized. The optical bandgap energy of the films fit into the range (1-3eV) for a PEC / solar cell materials and decreases as the deposition time of the films increases. Bandgap energy of 1.12 eV and 1.15 eV was obtained for NiS2 and NiSe2 films deposited at 30 minutes and 25 minutes, respectively. Results on the semiconductor parameters analysis of the films showed that the nature of the Mott-Schottky plots indicates that the films obtained are of p-type material. All values come in the range of many other transition metal chalcogenides and this has proven that NiX2(X=S,Se) thin films are capable as a solar / PEC cell material 2014 Thesis http://eprints.utem.edu.my/id/eprint/16816/ http://eprints.utem.edu.my/id/eprint/16816/1/Synthesis%20And%20Characterization%20Of%20Electrodeposited%20Nickel%20Chalcogenides%20For%20Photoelectrochemical-Solar%20Cell%20Application.pdf text en public http://eprints.utem.edu.my/id/eprint/16816/2/Synthesis%20and%20characterization%20of%20electrodeposited%20nickel%20chalcogenides%20for%20photoelectrochemical%20%20solar%20cell%20application.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=96130 mphil masters Universiti Teknikal Malaysia Melaka Faculty Of Manufacturing Engineering Sahaya Anand, T Joseph
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Sahaya Anand, T Joseph
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Rajes, K.M.Rajan Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
description	Nickel chalcogenides, NiX2(X=S,Se) thin films were successfully electrodeposited on indium-tin-oxide (ITO)-coated glass substrates. The deposition time for the thin films were set at 10 minutes to 30 minutes with an interval of 5 minutes. The thin films were characterized for their structural, morphological and compositional characteristics. Their optical and semiconducting parameters were also analyzed in order to determine the suitability of the thin films for photoelectrochemical (PEC) / solar cell applications. Films were well adherent to the subtrates and grew up to thickness of ≈ 1.5μm. Structural analysis via X-Ray Diffraction (XRD) analysis reveals that films are polycrystalline with increasing intensity of XRD peaks in thicker films. Preferred orientation of (2 2 0) plane in NiS2 and (2 1 1) plane in NiSe2 was observed as the highest peak in spectrum. The surface morphology of the films determined by Scanning Electron Microscope (SEM) showed the growth of the films to be uniform and well covered for thinner films. However, at longer deposition times, the structure of the films start to break into grains (flakes) due to maximum grain stress point. Compositional analysis via Energy Dispersive X-ray (EDX) technique confirmed the presence of Ni, S, and Se elements in the films synthesized. The optical bandgap energy of the films fit into the range (1-3eV) for a PEC / solar cell materials and decreases as the deposition time of the films increases. Bandgap energy of 1.12 eV and 1.15 eV was obtained for NiS2 and NiSe2 films deposited at 30 minutes and 25 minutes, respectively. Results on the semiconductor parameters analysis of the films showed that the nature of the Mott-Schottky plots indicates that the films obtained are of p-type material. All values come in the range of many other transition metal chalcogenides and this has proven that NiX2(X=S,Se) thin films are capable as a solar / PEC cell material
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Rajes, K.M.Rajan
author_facet	Rajes, K.M.Rajan
author_sort	Rajes, K.M.Rajan
title	Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
title_short	Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
title_full	Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
title_fullStr	Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
title_full_unstemmed	Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
title_sort	synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty Of Manufacturing Engineering
publishDate	2014
url	http://eprints.utem.edu.my/id/eprint/16816/1/Synthesis%20And%20Characterization%20Of%20Electrodeposited%20Nickel%20Chalcogenides%20For%20Photoelectrochemical-Solar%20Cell%20Application.pdf http://eprints.utem.edu.my/id/eprint/16816/2/Synthesis%20and%20characterization%20of%20electrodeposited%20nickel%20chalcogenides%20for%20photoelectrochemical%20%20solar%20cell%20application.pdf
_version_	1747833895307444224

Synthesis and characterization of electrodeposited nickel chalcogenides for photoelectrochemical/ solar cell application

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