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Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique

Doctor of Philosophy in Nanomaterial Engineering

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Bibliographic Details
Main Author: Authman Salim, Ibraheam
Other Authors: Yarub, Al-Douri, Assoc. Prof. Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2016
Subjects:
Electrospinning
Nanostructures
Photovoltaic power generation
Dengue
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72566
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spelling my.unimap-725662022-11-24T04:59:43Z Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique Authman Salim, Ibraheam Yarub, Al-Douri, Assoc. Prof. Dr. Electrospinning Nanostructures Photovoltaic power generation Dengue Doctor of Philosophy in Nanomaterial Engineering The principal aim of the research work presented in this thesis is to synthesise nanostructured Cu2Zn1-xCdxSnS4with different Cd concentrations (x=0 to 1)on glass, porous silicon (PS), oxidized silicon (SiO2) and GaN substratesusing different methods of spin coating and electrospinningtechniquesfor heterojunction, solar cell and Dengue type-2 DNA detector applications. In this work, we have studied the different effect copper (Cu) concentrations (0.3, 0.5, 0.7 and 0.9 mol/L) on the structural, morphological, optical and electrical properties of Cu2Zn0.8Cd0.2SnS4 quinternary alloy nanostructures prepared by spin coating technique. The direct band gap of Cu2Zn0.8Cd0.2SnS4quinternary alloy nanostructures decreases as Cu concentration increases from 1.81 eV at 0.3M to 1.60eV at 0.9M. The transmittance value in the range 63-49% was also dependent on Cu concentration. The refractive index and optical dielectric constant are calculated and gave good agreement with experimental and theoretical results. Electrical properties studied by Hall Effect measurement, showed ptype conductivity, with a carrier concentration between 7.819×1012 cm–3 and 3.76×1014 cm-3.It was observed a linear decreasing in the band gap of Cu2Zn1- xCdxSnS4/glassquinternary alloy nanostructures as Cd concentration increases.The transmittance value was 73% at x = 0 and 39% at x = 1. Hall Effect measurements suggest that all the grown nanostructures have p-type conduction. XRD results showed that Cu2Zn1-xCdxSnS4quinternaryalloy nanostructures has multiphase polycrystalline with preferential orientation along (112) and (312) directions with kesterite structure at x=0 and stannite structure at x=1.The Cu2Zn1-xCdxSnS4quinternary alloy nanostructures on PS (63.93%) substrate with different Cd concentration deposited via spin coating technique were successfully examined for heterojunction. The current-tovoltage (I-V) of Ag/n-PS/Cu2Zn1-xCdSnS4/Ag heterojunction at x= 0, 0.6, 1 was characterized. The photosensitivity increases as Cd concentration increases to of (3401.36) for x=0.6 compared with (282.40) for x=0 and (567.68) for x=1 respectively. Different method electrospinningtechnique is used to synthesise of Cu2Zn1- xCdxSnS4quinternaryalloynanofibres. 2016 2021-10-21T01:42:06Z 2021-10-21T01:42:06Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72566 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) Institute of Nano Electronic Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Electrospinning
Nanostructures
Photovoltaic power generation
Dengue
spellingShingle Electrospinning
Nanostructures
Photovoltaic power generation
Dengue
Authman Salim, Ibraheam
Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
description Doctor of Philosophy in Nanomaterial Engineering
author2 Yarub, Al-Douri, Assoc. Prof. Dr.
author_facet Yarub, Al-Douri, Assoc. Prof. Dr.
Authman Salim, Ibraheam
format Thesis
author Authman Salim, Ibraheam
author_sort Authman Salim, Ibraheam
title Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
title_short Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
title_full Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
title_fullStr Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
title_full_unstemmed Synthesis and characterization of Cu₂Zn₁-xCdxSnS₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
title_sort synthesis and characterization of cu₂zn₁-xcdxsns₄ quinternary alloy structure nanostructures using sol-gel electrospining technique
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72566
_version_ 1753972980559380480
score 13.214268

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