Diketopyrrolopyrrole-based sensitizers for dye-sensitized solar cell applications: anchor engineering

A series of donor-chromophore-anchor (D-C-A) sensitizers comprising the diketopyrrolopyrrole (DPP) chromophore were synthesized and tested in both I-3(-)/I- and Co[(bpy)](3+/2+) redox shuttle DSC devices. The dye series was strategically designed to elucidate structure-property relationships, concerning overall performance and compatibility with these two electrolytes. Selective fluorine incorporation improved I-3(-)/I--based DSC performance, while hindering performance with the positively charged cobalt-based redox shuttle. Incorporation of a pyridine heterocycle into the DPP chromophore increased spectral breadth, but decreased performance metrics for both electrolyte systems. These results are understood through detailed electrochemical, photophysical, and computational studies.


Published in:
Journal Of Materials Chemistry A, 1, 44, 13978-13983
Year:
2013
Publisher:
Cambridge, Royal Society of Chemistry
ISSN:
2050-7488
Laboratories:




 Record created 2013-12-09, last modified 2018-03-17


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