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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| التنسيق: | أطروحة |
| اللغة: | English English English |
| منشور في: |
2012
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| الوصول للمادة أونلاين: | 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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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 |