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A Water-Soluble Hybrid Material of Single-Walled Carbon Nanotubes with an Amphiphilic Poly(phenyleneethynylene): Preparation, Characterization, and Photovoltaic Properties

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Abstract:

A novel rigid linear polymer poly(phenyleneethynylene) (PPE) was synthesized and the polymer exhibits good solubility in both water and common organic solvents. The interaction at both ground and excited state between this polymer and single-walled carbon nanotubes (SWNTs) was studied and a water-soluble nano-scale PPE/SWNTs hybrid was fabricated, where the water solubility of SWNTs was enhanced to 1.8 mg/ml. Steady state fluorescence spectra and fluorescence lifetime decay measurements showed that the emissions from PPEs in this hybrid at excited state were efficiently quenched by the attachment of SWNTs, where an efficient energy transfer happened from PPEs to SWNTs as the electron acceptor. Using this hybrid as the active layer we fabricated a photovoltaic cell with the bulk heterojunction configuration, and it showed a photoresponse with an open circuit voltage (Voc) of 105 mV and a short circuit current density (Isc) of 28.7 A/cm2 under standard AM 1.5 illumination (100 mW/cm2).

Keywords: ENERGY TRANSFER; NON-COVALENT FUNCTIONALIZATION; PHOTOVOLTAIC CELL; POLY(PHENYLENEETHYNYLENE); SINGLE-WALLED CARBON NANOTUBES

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.865

Publication date: August 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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