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 TiO2surface protection, the recombination of electrons in TiO2to the oxidized redox shuttle could be controlled, leading to HV‐DSC devices of up to 1.4 V.
The development of high voltage solar cells is an attractive way to use sunlight for solar‐to‐fuel devices, multijunction solar‐to‐electric systems, and to power limited‐area consumer electronics. By designing a low‐oxidation‐potential organic dye (
- NSF-PAR ID:
- 10056272
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Angewandte Chemie International Edition
- Volume:
- 57
- Issue:
- 19
- ISSN:
- 1433-7851
- Page Range / eLocation ID:
- p. 5472-5476
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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