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Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films. / Johann Josef Anton Schabauer

Swansea University Author: Johann Josef Anton Schabauer

Abstract

This work is primarily a study of the photoelectrochemical characterisation of dye sensitised solar cells. The specific parts of the cell and their role towards overall cell efficiency are considered in detail. A large number of cells have been characterised in which the nature of: the TiO2 semicond...

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Published: 2008
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42365
first_indexed 2018-08-02T18:54:32Z
last_indexed 2018-08-03T10:09:57Z
id cronfa42365
recordtype RisThesis
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spelling 2018-08-02T16:24:28.9789956 v2 42365 2018-08-02 Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films. d96e04b4ee687b85d053fdf0e4074f56 NULL Johann Josef Anton Schabauer Johann Josef Anton Schabauer true true 2018-08-02 This work is primarily a study of the photoelectrochemical characterisation of dye sensitised solar cells. The specific parts of the cell and their role towards overall cell efficiency are considered in detail. A large number of cells have been characterised in which the nature of: the TiO2 semiconductor, the absorbing dye, electrolyte, and the nature of the conducting electrodes, were varied. The photoelectric properties of the cells were measured using a Xe-arc sun simulator mimicking the incident solar radiation at ground level. Cell voltage and current were measured while operating under different temperatures and irradiation intensities. It was found, that a thick layer of Pt at the counter electrode did not improve the performance of the cell. Plastic cells are smaller and lighter, but lack in efficiency when compared to glass cells which is down to the lower series resistance of the transparent conducting oxide used. Higher concentrated electrolytes can lead to better results. At higher illumination intensities, back irradiation of the cell becomes favourable down to charge transfer limitations, especially in gel and solid electrolytes. Another significant part of the research documented in this thesis was the development of thin film and interfacial time resolved photoacoustic calorimetry as a novel method for the time resolved measurement of non-radiative processes of dyes adsorbed at interfaces or as thin solid films. In our case, the dyes were either adsorbed on the mesoporous TiO2 semiconductor film used in dye sensitised solar cells, or incorporated in a polymer matrix. Using this approach, we were able to directly measure triplet state lifetimes and quantum yields of charge injection into the semiconductor. Possible further applications for this method are discussed. E-Thesis Materials science.;Electrical engineering.;Alternative Energy. 31 12 2008 2008-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-02T16:24:28.9789956 2018-08-02T16:24:28.9789956 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Johann Josef Anton Schabauer NULL 1 0042365-02082018162448.pdf 10798073.pdf 2018-08-02T16:24:48.6970000 Output 23225749 application/pdf E-Thesis true 2018-08-02T16:24:48.6970000 false
title Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
spellingShingle Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
Johann Josef Anton Schabauer
title_short Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
title_full Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
title_fullStr Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
title_full_unstemmed Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
title_sort Dye sensitised solar cells and time resolved photoacoustic calorimetry on thin films.
author_id_str_mv d96e04b4ee687b85d053fdf0e4074f56
author_id_fullname_str_mv d96e04b4ee687b85d053fdf0e4074f56_***_Johann Josef Anton Schabauer
author Johann Josef Anton Schabauer
author2 Johann Josef Anton Schabauer
format E-Thesis
publishDate 2008
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description This work is primarily a study of the photoelectrochemical characterisation of dye sensitised solar cells. The specific parts of the cell and their role towards overall cell efficiency are considered in detail. A large number of cells have been characterised in which the nature of: the TiO2 semiconductor, the absorbing dye, electrolyte, and the nature of the conducting electrodes, were varied. The photoelectric properties of the cells were measured using a Xe-arc sun simulator mimicking the incident solar radiation at ground level. Cell voltage and current were measured while operating under different temperatures and irradiation intensities. It was found, that a thick layer of Pt at the counter electrode did not improve the performance of the cell. Plastic cells are smaller and lighter, but lack in efficiency when compared to glass cells which is down to the lower series resistance of the transparent conducting oxide used. Higher concentrated electrolytes can lead to better results. At higher illumination intensities, back irradiation of the cell becomes favourable down to charge transfer limitations, especially in gel and solid electrolytes. Another significant part of the research documented in this thesis was the development of thin film and interfacial time resolved photoacoustic calorimetry as a novel method for the time resolved measurement of non-radiative processes of dyes adsorbed at interfaces or as thin solid films. In our case, the dyes were either adsorbed on the mesoporous TiO2 semiconductor film used in dye sensitised solar cells, or incorporated in a polymer matrix. Using this approach, we were able to directly measure triplet state lifetimes and quantum yields of charge injection into the semiconductor. Possible further applications for this method are discussed.
published_date 2008-12-31T19:27:59Z
_version_ 1821344299525079040
score 11.04748

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