Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells
Nano Letters2009Vol. 9(12), pp. 4037–4041
Citations Over TimeTop 1% of 2009 papers
Abstract
We investigate the internal quantum efficiencies (IQEs) of high efficiency poly-3-hexylthiophene:[6,6]-phenyl-C(61)-butyric acid methyl ester (P3HT:PCBM) solar cells and find them to be lower at wavelengths where the PCBM absorbs. Because the exciton diffusion length in PCBM is too small, excitons generated in PCBM decay before reaching the donor-acceptor interface. This result has implications for most state of the art organic solar cells, since all of the most efficient devices use fullerenes as electron acceptors.
Related Papers
- Electronic Structure Calculations on Fullerenes and Their Derivatives(1995)
- → Size analysis of single fullerene molecules by electron microscopy(2004)144 cited
- → Probing the spatial requirements for [60]fullerene–[60]fullerene π-stacking and the syn addition of [60]fullerenes across acenes(2003)9 cited
- → Synthesis and Characterisation of Some New Ferrocenyl- and Ferrocenylalkynyl-[60]Fullerene Compounds(1997)3 cited
- Effect of Additive in Fullerene and Non-Fullerene Acceptor Organic Solar Cells(2017)