| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Barreto, Jorge
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020An integrated optical modulator operating at cryogenic temperaturescitations
- 2019An integrated cryogenic optical modulator
- 2019An integrated cryogenic optical modulator
- 2019First cryogenic electro-optic switch on silicon with high bandwidth and low power tunabilitycitations
- 2013DC electroluminescence efficiency of silicon rich silicon oxide light emitting capacitorscitations
- 2013DC electroluminescence efficiency of silicon rich silicon oxide light emitting capacitorscitations
- 2012Comparison of electrical and electro-optical characteristics of light-emitting capacitors based on silicon-rich Si-oxide fabricated by plasma-enhanced chemical vapor deposition and ion implantationcitations
- 2012Resolving the ultrafast dynamics of charge carriers in nanocompositescitations
- 2007Comparative study between silicon-rich oxide films obtained by LPCVD and PECVDcitations
- 2006Field effect luminescence from Si nanocrystals obtained by plasma-enhanced chemical vapor depositioncitations
Places of action
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article
Resolving the ultrafast dynamics of charge carriers in nanocomposites
Abstract
Here, we describe an optical method to determine the dynamics of optically excited carriers in nanostructured composite samples. By combining pump-probe time-resolved reflectivity with scattering measurements, we extract the characteristic times for charge carrier evolution. We use the 3D Maxwell-Garnett formulae, modified to include the Drude optical response, to model the results. The method, applied to hydrogenated amorphous silicon containing crystalline silicon nanoparticles, showed that the recombination times in the nanocrystals and in the matrix were ∼4.9 ps and ∼22 ps, respectively. The charge transfer time between the crystals and the matrix was ∼4 ps.