Iron Redox Shuttles with Wide Optical Gap Dyes for High-Voltage Dye-Sensitized Solar Cells
| Autor: | Ryan C. Fortenberry, Jonathon Watson, Roberta R. Rodrigues, Leigh Anna Hunt, Jonah W. Jurss, Christine Curiac, Nathan I. Hammer, Jared H. Delcamp, Anthony Devdass |
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| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
Ether 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences Redox law.invention chemistry.chemical_compound law Photovoltaics Solar cell Environmental Chemistry General Materials Science Alkyl chemistry.chemical_classification business.industry Aryl High voltage 021001 nanoscience & nanotechnology 0104 chemical sciences Dye-sensitized solar cell General Energy chemistry 0210 nano-technology business |
| Zdroj: | ChemSusChem. 14(15) |
| ISSN: | 1864-564X |
| Popis: | A series of iron polypyridyl redox shuttles were synthesized in the 2+ and 3+ oxidation states and paired with a series of wide optical gap organic dyes with weak aryl ether electron-donating groups. High voltage dye-sensitized solar cell (HV-DSC) devices were obtained through controlling the redox shuttle energetics and dye donor structure. The use of aryl ether donor groups, in place of commonly used aryl amines, allowed for the lowering of the dye ground-state oxidation potential which enabled challenging to oxidize redox shuttles based on Fe2+ polypyridyl structures to be used in functional devices. By carefully designing a dye series that varies the number of alkyl chains for TiO2 surface protection, the recombination of electrons in TiO2 to the oxidized redox shuttle could be controlled, leading to HV-DSC devices of up to 1.4 V. |
| Databáze: | OpenAIRE |
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