Charging and exciton-mediated decharging of metal nanoparticles in organic semiconductor matrices

Abstract : Gold nanoparticles (Au-NPs) were deposited on the surface of n- and p-type organic semiconductors to form defined model systems for charge storage based electrically addressable memory elements. We used ultraviolet photoelectron spectroscopy to study the electronic properties and found that the Au-NPs become positively charged because of photoelectron emission, evidenced by spectral shifts to higher binding energy. Upon illumination with light that can be absorbed by the organic semiconductors, dynamic charge neutrality of the Au-NPs could be re-established through electron transfer from excitons. The light-controlled charge state of the Au-NPs could add optical addressability to memory elements.
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Article dans une revue
Applied Physics Letters, American Institute of Physics, 2014, 104, pp.163302-1, 163302-4
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https://hal-ujm.archives-ouvertes.fr/ujm-00990304
Contributeur : Nicolas Crespo-Monteiro <>
Soumis le : mardi 13 mai 2014 - 14:21:18
Dernière modification le : jeudi 15 mars 2018 - 01:36:37

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  • HAL Id : ujm-00990304, version 1

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Giovanni Ligorio, Marco Nardi Vittorio, Christos Christodoulou, Ileana Florea, N. Crespo-Monteiro, et al.. Charging and exciton-mediated decharging of metal nanoparticles in organic semiconductor matrices. Applied Physics Letters, American Institute of Physics, 2014, 104, pp.163302-1, 163302-4. 〈ujm-00990304〉

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