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Stable Redox Systems for Dye-Sensitized Solar Cells
KTH, School of Chemical Science and Engineering (CHE).
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Stabila redoxsystem för färgämnessensiterade solceller (Swedish)
Abstract [en]

Dye sensitized solar cells are a new type of solar cells which open a new market thanks to their unique properties, which are semi transparency and the fact that they can be produced in various colors.

After improving two existing syntheses for industrial applications, this thesis takes the approach to develop new redox mediators for devices with an aim on improving stability. Five redox mediators with cobalt, copper and iron as metal center were synthesized and characterized by NMR spectroscopy, cyclic voltammetry and UV/VIS spectrophotometry. Three of them were selected for evaluation in test cells. Most promising results were obtained with a copper complex, using the tandem redox approach a new record efficiency of 7.7% for copper based electrolytes in dye-sensitized solar cells was obtained.

Place, publisher, year, edition, pages
2015. , 74 p.
Keyword [en]
Renewable energy, Dye sensitized solar cells, Stability of redox mediators, Copper and cobalt based redox systems, Nuclear magnetic resonance spectroscopy of metal organic complexes
National Category
Inorganic Chemistry Analytical Chemistry Theoretical Chemistry Materials Chemistry Organic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-174888OAI: oai:DiVA.org:kth-174888DiVA: diva2:859714
Available from: 2016-01-29 Created: 2015-10-08 Last updated: 2016-01-29Bibliographically approved

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