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Light control of charge transfer and excitonic transitions in a carbon nanotube/porphyrin hybrid

Chen, Yani and Royal, Guy and Flahaut, Emmanuel and Cobo, Saioa and Bouchiat, Vincent and Marty, Laëtitia and Bendiab, Nedjma Light control of charge transfer and excitonic transitions in a carbon nanotube/porphyrin hybrid. (2017) Advanced Materials, 29 (18). 1605745/1-1605745/7. ISSN 0935-9648

(Document in English)

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Official URL: http://dx.doi.org/10.1002/adma.201605745


Carbon nanotube–chromophore hybrids are promising building blocks in order to obtain a controlled electro-optical transduction effect at the single nano-object level. In this work, a strong spectral selectivity of the electronic and the phononic response of a chromophore-coated single nanotube transistor is observed for which standard photogating cannot account. This paper investigates how light irradiation strongly modifies the coupling between molecules and nanotube within the hybrid by means of combined Raman diffusion and electron transport measurements. Moreover, a nonconventional Raman enhancement effect is observed when light irradiation is on the absorption range of the grafted molecule. Finally, this paper shows how the dynamics of single electron tunneling in the device at low temperature is strongly modified by molecular photoexcitation. Both effects will be discussed in terms of photoinduced excitons coupled to electronic levels.

Item Type:Article
Additional Information:Thanks to John Wiley & Sons editor. The original PDF of the article can be found at http://onlinelibrary.wiley.com/doi/10.1002/adma.201605745/abstract;jsessionid=4D232B7C735D410091ECFF7F61AA91D2.f04t03.
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université Grenoble Alpes - UGA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:10 Jul 2017 12:39

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