The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application

Perovskite solar cells (PSC) are evolving in spectacular pace and emerging as the most promising future generation of photovoltaic devices. In the present study, reduced graphene oxide (rGO) is introduced to titanium dioxide (TiO2) as electron transport layer (ETL) in perovskite solar cell (PSC). Ti...

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Main Author:	Rafidah, Kemat
Format:	Thesis
Language:	English English
Published:	2020
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://ir.unimas.my/id/eprint/30681/1/The%20Temperature%20Effects%20of%20Titanium%20Dioxide%20%28TiO2%29%20Doped%20Reduced%20-%2024pgs.pdf http://ir.unimas.my/id/eprint/30681/4/Rafidah%20Kemat%20ft.pdf
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spelling	my-unimas-ir.306812023-06-27T08:04:07Z The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application 2020-07-22 Rafidah, Kemat TK Electrical engineering. Electronics Nuclear engineering Perovskite solar cells (PSC) are evolving in spectacular pace and emerging as the most promising future generation of photovoltaic devices. In the present study, reduced graphene oxide (rGO) is introduced to titanium dioxide (TiO2) as electron transport layer (ETL) in perovskite solar cell (PSC). TiO2 doped rGO (TiO2/rGO) was prepared by combining titanium (IV) oxide nanopowder as precursor for TiO2 and chemically reduced graphene oxide for rGO. The TiO2/rGO is varied with different annealing temperature and its effect on TiO2/rGO properties and on electrical performance of PSC is studied. The surface morphologies of TiO2/rGO thin films is characterized via Scanning Electron Microscope (SEM), Atomic Force Microscope (AFM) and X-Ray Diffraction (XRD). Meanwhile, Ultraviolet-visible spectroscopy (UV-Vis) and X-ray Photoelectron Spectroscopy (XPS) are used to characterize the optical properties and chemical bonding respectively. Lastly, (I-V) analysis for electrical properties is performed. Structural and morphological evidences from SEM, AFM and XRD results confirmed that the TiO2/rGO samples existed in anatase phase, rutile phase and the porosity as well as the surface roughness of TiO2/rGO thin films increased as the annealing temperature increased. The absorption spectra and the band gap obtained at 326 nm and 2.48 eV respectively for TiO2/rGO that annealed at 550 ᵒC portraits better performances due to increment in grain size in higher annealing temperature. The formations of Ti-O and Ti-O-C bonds are confirmed from XPS analysis that fastening the rate of electron transfer in PSC. The electrical properties of TiO2/rGO confirming that 550 ᵒC TiO2/rGO has better conductivity at 18.83 × 10-3 S/cm in conjunctions with its performance in optical properties. Universiti Malaysia Sarawak (UNIMAS) 2020-07 Thesis http://ir.unimas.my/id/eprint/30681/ http://ir.unimas.my/id/eprint/30681/1/The%20Temperature%20Effects%20of%20Titanium%20Dioxide%20%28TiO2%29%20Doped%20Reduced%20-%2024pgs.pdf text en public http://ir.unimas.my/id/eprint/30681/4/Rafidah%20Kemat%20ft.pdf text en validuser masters Universiti Malaysia Sarawak (UNIMAS) Faculty of Engineerng Fundamental Research Grant Scheme (FRGS)
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Rafidah, Kemat The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application
description	Perovskite solar cells (PSC) are evolving in spectacular pace and emerging as the most promising future generation of photovoltaic devices. In the present study, reduced graphene oxide (rGO) is introduced to titanium dioxide (TiO2) as electron transport layer (ETL) in perovskite solar cell (PSC). TiO2 doped rGO (TiO2/rGO) was prepared by combining titanium (IV) oxide nanopowder as precursor for TiO2 and chemically reduced graphene oxide for rGO. The TiO2/rGO is varied with different annealing temperature and its effect on TiO2/rGO properties and on electrical performance of PSC is studied. The surface morphologies of TiO2/rGO thin films is characterized via Scanning Electron Microscope (SEM), Atomic Force Microscope (AFM) and X-Ray Diffraction (XRD). Meanwhile, Ultraviolet-visible spectroscopy (UV-Vis) and X-ray Photoelectron Spectroscopy (XPS) are used to characterize the optical properties and chemical bonding respectively. Lastly, (I-V) analysis for electrical properties is performed. Structural and morphological evidences from SEM, AFM and XRD results confirmed that the TiO2/rGO samples existed in anatase phase, rutile phase and the porosity as well as the surface roughness of TiO2/rGO thin films increased as the annealing temperature increased. The absorption spectra and the band gap obtained at 326 nm and 2.48 eV respectively for TiO2/rGO that annealed at 550 ᵒC portraits better performances due to increment in grain size in higher annealing temperature. The formations of Ti-O and Ti-O-C bonds are confirmed from XPS analysis that fastening the rate of electron transfer in PSC. The electrical properties of TiO2/rGO confirming that 550 ᵒC TiO2/rGO has better conductivity at 18.83 × 10-3 S/cm in conjunctions with its performance in optical properties.
format	Thesis
qualification_level	Master's degree
author	Rafidah, Kemat
author_facet	Rafidah, Kemat
author_sort	Rafidah, Kemat
title	The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application
title_short	The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application
title_full	The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application
title_fullStr	The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application
title_full_unstemmed	The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application
title_sort	temperature effects of titanium dioxide (tio2) doped reduced graphene oxide (rgo) for perovskite solar cell application
granting_institution	Universiti Malaysia Sarawak (UNIMAS)
granting_department	Faculty of Engineerng
publishDate	2020
url	http://ir.unimas.my/id/eprint/30681/1/The%20Temperature%20Effects%20of%20Titanium%20Dioxide%20%28TiO2%29%20Doped%20Reduced%20-%2024pgs.pdf http://ir.unimas.my/id/eprint/30681/4/Rafidah%20Kemat%20ft.pdf
_version_	1783728391117078528

The Temperature Effects of Titanium Dioxide (TiO2) Doped Reduced Graphene Oxide (rGO) for Perovskite Solar Cell Application

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