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Development of n-type silver-nanoparticles-modified carbon materials doped by triphenylphosphine

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Abstract

Here we report a doping method based on charge transfer interaction for an easily obtainable carbon material, carbon black (acetylene carbon black and Ketjenblack), as a main raw material. The n-type doping of those carbon blacks, generally p-type material, was conducted with a molecular dopant, triphenylphosphine (tpp). The key was to modify the surface of carbon blacks with silver (Ag) nanoparticles to attach tpp molecules on the surface of Ag. Our method is expected to be used for the fabrication of functional devices (such as thermoelectric devices) from p- and n-type materials.

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ACKNOWLEDGMENTS

This work was partly supported by Nanotechnology Platform Program (Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan.

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Correspondence to Akira Ohnuma.

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The supplementary material for this article can be found at https://doi.org/10.1557/mrc.2017.48.

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Ohnuma, A., Iwasaki, K. Development of n-type silver-nanoparticles-modified carbon materials doped by triphenylphosphine. MRS Communications 7, 570–574 (2017). https://doi.org/10.1557/mrc.2017.48

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  • DOI: https://doi.org/10.1557/mrc.2017.48

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