Influence of nanomorphology on the photovoltaic action of polymer–fullerene composites
Carl von Ossietzky Universität Oldenburg · University of Groningen
Abstract
Composites of conjugated poly(3-hexylthiophene) (P3HT) and the fullerene derivative Thermal annealing of P3HT:PCBM based devices gives rise to a significant increase of the photovoltaic efficiency, as follows from measurements of the external quantum efficiency and the current-voltage characteristics. Upon annealing, the absorption spectrum of the P3HT:PCBM composite undergoes a strong modification, whereas in the pure components it remains unchanged. The absorption of the annealed blends becomes stronger and red shifted in the wavelength region ascribed to P3HT, while the absorption due to the PCBM contribution does not change. Atomic force microscope measurements on P3HT:PCBM disclose some variation in…
Citation impact
- FWCI
- 38.28
- Percentile
- 100%
- References
- 25
Authors
4Topics & keywords
- Materials science
- Photocurrent
- Fullerene
- Annealing (glass)
- Quantum efficiency
- Energy conversion efficiency
- Polymer solar cell
- Photovoltaic system
- Affordable and clean energy