Photoluminescence decay dynamics of noninteracting silicon nanocrystals
| Autor: | Nathalie Herlin-Boime, Cécile Reynaud, O. Guillois, Gilles Ledoux, Friedrich Huisken |
|---|---|
| Přispěvatelé: | Laboratoire Francis PERRIN (LFP - URA 2453), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), DRT/LITEN/DSEN/GENEC/Laboratoire Cellules et Composants (LABORATOIRE CELLULES ET COMPOSANTS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Rok vydání: | 2004 |
| Předmět: |
Materials science
Photoluminescence Silicon Kinetics Analytical chemistry Physics::Optics time resolved spectra General Physics and Astronomy Nanoparticle chemistry.chemical_element 02 engineering and technology 01 natural sciences Molecular physics Condensed Matter::Materials Science 0103 physical sciences nanostructured materials 010306 general physics atomic force microscopy 78.55.Ap 78.67.Bf 61.46.+w 81.05.Cy 78.47.+p Dynamics (mechanics) silicon particle size 021001 nanoscience & nanotechnology Exponential function [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry chemistry photoluminescence Particle size elemental semiconductors 0210 nano-technology Beam (structure) |
| Zdroj: | EMRS Spring meeting EMRS Spring meeting, 2004, Strasbourg, France Journal of Applied Physics Journal of Applied Physics, 2004, 95, pp.3677-3682. ⟨10.1063/1.1652245⟩ Journal of Applied Physics, American Institute of Physics, 2004, 95, pp.3677-3682. ⟨10.1063/1.1652245⟩ |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.1652245 |
| Popis: | Time-resolved photoluminescence measurements on size-selected silicon nanocrystals have been carried out in order to elucidate the nonexponential behavior of the photoluminescence decay kinetics. The nanoparticles are gas-phase synthesized, extracted as a supersonic beam, size selected, and deposited downstream as films of variable densities. The nanoparticle number densities were determined by atomic force microscopy. The photoluminescence properties appear totally independent of the film density. Even in the very low density film where nanoparticles are completely isolated from each other, the decay kinetics corresponds to a stretched exponential law. This means that the stretched exponential kinetics does not originate from the interaction between nanoparticles, but is actually a characteristic of the silicon nanocrystals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|