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Stable Redox Systems for Dye-Sensitized Solar Cells
KTH, Skolan för kemivetenskap (CHE).
2015 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)Alternativ titel
Stabila redoxsystem för färgämnessensiterade solceller (Svenska)
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.

Ort, förlag, år, upplaga, sidor
2015. , s. 74
Nyckelord [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
Nationell ämneskategori
Oorganisk kemi Analytisk kemi Teoretisk kemi Materialkemi Organisk kemi
Identifikatorer
URN: urn:nbn:se:kth:diva-174888OAI: oai:DiVA.org:kth-174888DiVA, id: diva2:859714
Tillgänglig från: 2016-01-29 Skapad: 2015-10-08 Senast uppdaterad: 2016-01-29Bibliografiskt granskad

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