Publikation: Ultrafast Charge Photogeneration in Semiconducting Carbon Nanotubes
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2013
Autor:innen
Soavi, Giancarlo
Scotognella, Francesco
Hefner, Timo
Späth, Florian
Antognazza, Maria R.
Hertel, Tobias
Lanzani, Guglielmo
Cerullo, Giulio
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The Journal of Physical Chemistry C. 2013, 117(20), pp. 10849-10855. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp404009z
Zusammenfassung
We show that excitons are not the unique outcome of photoexcitation in single-walled carbon nanotubes (SWNTs). Our experiments of transient photoinduced absorption suggest that charge carriers are formed with quantum yield of a few percent and that such species strongly affect the long-lived transient spectrum. Photogenerated charge carriers induce strong local electric fields that shift by the Stark effect the second subband exciton absorption in SWNTs, resulting in a characteristic derivative shape of the transient absorption spectra.
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SOAVI, Giancarlo, Francesco SCOTOGNELLA, Daniele BRIDA, Timo HEFNER, Florian SPÄTH, Maria R. ANTOGNAZZA, Tobias HERTEL, Guglielmo LANZANI, Giulio CERULLO, 2013. Ultrafast Charge Photogeneration in Semiconducting Carbon Nanotubes. In: The Journal of Physical Chemistry C. 2013, 117(20), pp. 10849-10855. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp404009zBibTex
@article{Soavi2013Ultra-29557,
year={2013},
doi={10.1021/jp404009z},
title={Ultrafast Charge Photogeneration in Semiconducting Carbon Nanotubes},
number={20},
volume={117},
issn={1932-7447},
journal={The Journal of Physical Chemistry C},
pages={10849--10855},
author={Soavi, Giancarlo and Scotognella, Francesco and Brida, Daniele and Hefner, Timo and Späth, Florian and Antognazza, Maria R. and Hertel, Tobias and Lanzani, Guglielmo and Cerullo, Giulio}
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