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Triphenylamine Based Organic Chromophores Containing Two Anchoring Groups for Dye Sensitized Solar Cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.ORCID iD: 0000-0003-1771-9401
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.
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(English)Manuscript (preprint) (Other academic)
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-33337OAI: oai:DiVA.org:kth-33337DiVA: diva2:414520
Note
QS 2011Available from: 2011-05-03 Created: 2011-05-03 Last updated: 2011-05-05Bibliographically approved
In thesis
1. Design, Synthesis and Properties of Organic Sensitizers for Dye Sensitized Solar Cells
Open this publication in new window or tab >>Design, Synthesis and Properties of Organic Sensitizers for Dye Sensitized Solar Cells
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis gives a detailed description of the design and synthesis of new organic sensitizers for Dye sensitized Solar Cells (DSCs). It is divided in 7 chapters, where the first gives an introduction to the field of DSCs and the synthesis of organic sensitizers. Chapters 2 to 6 deal with the work of the author, starting with the first publication and the other following in chronological order. The thesis is completed with some concluding remarks (chapter 7).

The DSC is a fairly new solar cell concept, also known as the Grätzel cell, after its inventor Michael Grätzel. It uses a dye (sensitizer) to capture the incident light. The dye is chemically connected to a porous layer of a wide band-gap semiconductor. The separation of light absorption and charge separation is different from the conventional Si-based solar cells. Therefore, it does not require the very high purity materials necessary for the Si-solar cells. This opens up the possibility of easier manufacturing for future large scale production. Since the groundbreaking work reported in 1991, the interest within the field has grown rapidly. Large companies have taken up their own research and new companies have started with their focus on the DSC. So far the highest solar energy to electricity conversion efficiencies have reached ~12%.

The sensitizers in this thesis are based on triphenylamine or phenoxazine as the electron donating part in the molecule. A conjugated linker allows the electrons to flow from the donor to the acceptor, which will enable the electrons to inject into the semiconductor once they are excited. Changing the structure by introducing substituents, extending the conjugation and exchanging parts of the molecule, will influence the performance of the solar cell. By analyzing the performance, one can evaluate the importance of each component in the structure and thereby gain more insight into the complex nature of the dye sensitized solar cell.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2011. 80 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2011:31
Keyword
Acceptor, chromophore, donor, dye, sensitized, energy level, HOMO/LUMO, linker, phenoxazine, sensitizer, solar cell, triphenylamine
National Category
Chemical Sciences Organic Chemistry
Identifiers
urn:nbn:se:kth:diva-33190 (URN)978-91-7415-954-7 (ISBN)
Public defence
2011-05-20, K2, Teknikringen 28, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20110505Available from: 2011-05-05 Created: 2011-04-29 Last updated: 2011-09-08Bibliographically approved

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Karlsson, Karl MartinSun, Licheng

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