Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell

Dye-sensitized solar cells (DSSCs) have been fabricated with doped Titanium Dioxide, TiO2 which are based on natural dyes from Malaysia tropical fruits, wherein contain interlocking groups; the carbonyl and hydroxyl groups of the anthocyanin molecule which enhance the photosensitization effect...

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Main Author:	Abdullah, Nur Munirah
Format:	Thesis
Language:	English English English
Published:	2012
Subjects:	QD Chemistry QD146-197 Inorganic chemistry
Online Access:	http://eprints.uthm.edu.my/2047/1/24p%20NUR%20MUNIRAH%20ABDULLAH.pdf http://eprints.uthm.edu.my/2047/2/NUR%20MUNIRAH%20ABDULLAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2047/3/NUR%20MUNIRAH%20BINTI%20ABDULLAH%20WATERMARK.pdf
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spelling	my-uthm-ep.20472021-10-31T01:29:14Z Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell 2012-09 Abdullah, Nur Munirah QD Chemistry QD146-197 Inorganic chemistry Dye-sensitized solar cells (DSSCs) have been fabricated with doped Titanium Dioxide, TiO2 which are based on natural dyes from Malaysia tropical fruits, wherein contain interlocking groups; the carbonyl and hydroxyl groups of the anthocyanin molecule which enhance the photosensitization effect due to the high interaction on the surface of the film. Such a natural dye extracted from Melastoma Malabathricum can be subjected to molecular tailoring to give a superior dye preparation, offering a wide range of spectral absorption; covering the entire visible region (400 – 700 nm). This study is based on a series of TiO2 preparations designated U1 and U2 (without and with additive respectively), and those treated with ultrasonic energy, namely U3 and U4 (without and with additive respectively). 10 minutes of sonication of the metal oxide led to its breakdown from agglomeration at the micro to the nano scale. Furthermore the additive (4-tert-butylpyridine) in potassium iodide, KI3 electrolyte, effects the rate of electron injection into the oxidized dye sensitizer. Sonication of TiO2 reduced the particle size agglomerates from 0.37 µm down to 0.15 µm; this treatment led to a more consistency with high porosity, enabling enhance absorption and anchorage of the dye sensitizer. Sonicated sample U4, with addition of electrolyte additive gives, open circuit voltage, Voc= 0.742 V, short circuit current, Isc= 0.36 mA, fill factor, FF= 57.012 and 0.039 % of cell’s efficiency. Evidently, sonication and addition of additive for KI3 electrolyte offer enhanced capability for further application. 2012-09 Thesis http://eprints.uthm.edu.my/2047/ http://eprints.uthm.edu.my/2047/1/24p%20NUR%20MUNIRAH%20ABDULLAH.pdf text en public http://eprints.uthm.edu.my/2047/2/NUR%20MUNIRAH%20ABDULLAH%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/2047/3/NUR%20MUNIRAH%20BINTI%20ABDULLAH%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Mekanikal dan Pembuatan
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	QD Chemistry QD146-197 Inorganic chemistry
spellingShingle	QD Chemistry QD146-197 Inorganic chemistry Abdullah, Nur Munirah Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
description	Dye-sensitized solar cells (DSSCs) have been fabricated with doped Titanium Dioxide, TiO2 which are based on natural dyes from Malaysia tropical fruits, wherein contain interlocking groups; the carbonyl and hydroxyl groups of the anthocyanin molecule which enhance the photosensitization effect due to the high interaction on the surface of the film. Such a natural dye extracted from Melastoma Malabathricum can be subjected to molecular tailoring to give a superior dye preparation, offering a wide range of spectral absorption; covering the entire visible region (400 – 700 nm). This study is based on a series of TiO2 preparations designated U1 and U2 (without and with additive respectively), and those treated with ultrasonic energy, namely U3 and U4 (without and with additive respectively). 10 minutes of sonication of the metal oxide led to its breakdown from agglomeration at the micro to the nano scale. Furthermore the additive (4-tert-butylpyridine) in potassium iodide, KI3 electrolyte, effects the rate of electron injection into the oxidized dye sensitizer. Sonication of TiO2 reduced the particle size agglomerates from 0.37 µm down to 0.15 µm; this treatment led to a more consistency with high porosity, enabling enhance absorption and anchorage of the dye sensitizer. Sonicated sample U4, with addition of electrolyte additive gives, open circuit voltage, Voc= 0.742 V, short circuit current, Isc= 0.36 mA, fill factor, FF= 57.012 and 0.039 % of cell’s efficiency. Evidently, sonication and addition of additive for KI3 electrolyte offer enhanced capability for further application.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Abdullah, Nur Munirah
author_facet	Abdullah, Nur Munirah
author_sort	Abdullah, Nur Munirah
title	Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
title_short	Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
title_full	Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
title_fullStr	Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
title_full_unstemmed	Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
title_sort	characterization and treatment of titanium dioxide, tio2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Mekanikal dan Pembuatan
publishDate	2012
url	http://eprints.uthm.edu.my/2047/1/24p%20NUR%20MUNIRAH%20ABDULLAH.pdf http://eprints.uthm.edu.my/2047/2/NUR%20MUNIRAH%20ABDULLAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2047/3/NUR%20MUNIRAH%20BINTI%20ABDULLAH%20WATERMARK.pdf
_version_	1747830904197218304

Characterization and treatment of titanium dioxide, TiO2 via ultrasonic process with melastoma malabathricum as sustainable sensitizer for photovoltaic slar cell

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