Time-evolution of poly(3-hexylthiophene) as an energy relay dye in dye-sensitized solar cells.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 22208767.
- Also identified by DOI 10.1021/nl203377r.
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Abstract
Energy relay dyes (ERD) and Förster resonant energy transfer (FRET) are useful techniques for increasing absorption in dye-sensitized solar cells. We use femtosecond transient absorption spectroscopy to monitor charge generation processes in a solid-state DSC containing poly(3-hexylthiophene) (P3HT) as both the hole-transporter and the ERD with a zinc phthalocyanine dye (TT1) as the sensitizer. We observe efficient FRET occurring on picosecond time scales and subsequent hole transfer from TT1 to P3HT occurring onward from 100 ps.
Medical subject headings
- Fluorescent Dyes
- Solar Energy
- Thiophenes