Time-evolution of poly(3-hexylthiophene) as an energy relay dye in dye-sensitized solar cells.

Time-evolution of poly(3-hexylthiophene) as an energy relay dye in dye-sensitized solar cells.

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)...

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Bibliografiska uppgifter
Huvudupphovsmän: Humphry-Baker, N, Driscoll, K, Rao, A, Torres, T, Snaith, H, Friend, R
Materialtyp: Journal article
Språk:English
Publicerad: 2012
Beskrivning
Sammanfattning: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.

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