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Dai, Liming
Dr. Liming Dai's Group
Research Interests
  • Synthesis

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Soluble P3HT-Grafted Graphene for Efficient Bilayer-Heterojunction Photovoltaic Devices

Cited 121 times inthomson ciCited 106 times inthomson ci
Title
Soluble P3HT-Grafted Graphene for Efficient Bilayer-Heterojunction Photovoltaic Devices
Author
Yu, DingshanYang, YanDurstock, MichaelBaek, Jong-BeomDai, Liming
Keywords
Bi-layer; Carboxylic group; Covalent linkage; Device fabrications; Electrochemical measurements; Electronic interactions; End-functionalization; Esterification reactions; Graphene oxides; Graphenes; Heterojunction photovoltaic devices; Heterostructures; Photovoltaic devices; Poly (3-hexylthiophene); Power conversion efficiencies; Regio-regular; solution processing; Solution-cast
Issue Date
201010
Publisher
AMER CHEMICAL SOC
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)).
URI
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DOI
http://dx.doi.org/10.1021/nn101671t
ISSN
1936-0851
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ECHE_Journal Papers
MNE_Journal Papers

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