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- Baek, Jong-Beom
- Center for Dimension-Controllable Organic Frameworks
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Soluble P3HT-Grafted Graphene for Efficient Bilayer-Heterojunction Photovoltaic Devices
- Author(s)
- Yu, Dingshan, Yang, Yan, Durstock, Michael, Baek, Jong-Beom, Dai, Liming
- Issued Date
- 2010-10
- Citation
- ACS NANO, v.4, no.10, pp.5633 - 5640
- Abstract
- CH2OH-terminated regioregular poly(3-hexylthiophene) (P3HT) was chemically grafted onto carboxylic groups of graphene oxide (GO) via esterification reaction. The resultant P3HT-grafted GO sheets (G-P3HT) are soluble in common organic solvents, facilitating the structure/property characterization and the device fabrication by solution processing. The covalent linkage and the strong electronic interaction between the P3HT and graphene moieties in G-P3HT were confirmed by spectroscopic analyses and electrochemical measurements. A bilayer photovoltaic device based on the solution-cast G-P3HT/C-60 heterostructures showed a 200% increase of the power conversion efficiency (eta = 0.61%) with respect to the P3HT/C-60 counterpart under AM 1.5 illumination (100 mW/cm(2)).
- Publisher
- AMER CHEMICAL SOC
- ISSN
- 1936-0851
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