Functionalized carbon nanotubes in donor/acceptor-type photovoltaic devices

We have introduced functionalized multiwalled carbon nanotubes (CNTs) in donor/acceptor-type photovoltaic devices. We fabricated the devices based on heterostructure between polymer-CNT composite and buckminsterfullerene ( C 60 ) layers. Due to the functional groups of the CNTs, a homogeneous blend...

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Bibliographic Details
Published in:Applied physics letters 2006-02, Vol.88 (9), p.093106-093106-3
Main Authors: Pradhan, Basudev, Batabyal, Sudip K., Pal, Amlan J.
Format: Article
Language:English
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Summary:We have introduced functionalized multiwalled carbon nanotubes (CNTs) in donor/acceptor-type photovoltaic devices. We fabricated the devices based on heterostructure between polymer-CNT composite and buckminsterfullerene ( C 60 ) layers. Due to the functional groups of the CNTs, a homogeneous blend of CNT-polymer composite could be obtained. In the composite, the nanotubes acted as exciton dissociation sites and also hopping centers for hole transport. The CNTs in the polymer - CNT ∕ C 60 device provided higher exciton dissociation volume and increased mobility for carrier transport. We have observed an increase in open-circuit voltage and short-circuit current in the polymer - CNT ∕ C 60 devices as compared to the polymer ∕ C 60 ones.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2179372