Twenty-fold plasmon-induced enhancement of radiative emission rate in silicon nanocrystals embedded in silicon dioxide
| Autor: | Spyros Gardelis, Androula G. Nassiopoulou, V. Gianneta |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Photoluminescence Silicon dioxide Biophysics 02 engineering and technology 01 natural sciences Biochemistry law.invention chemistry.chemical_compound law 0103 physical sciences Solar cell Plasmon 010302 applied physics business.industry Surface plasmon Nanocrystalline silicon Absorption cross section General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics chemistry Excited state Optoelectronics 0210 nano-technology business |
| Zdroj: | Journal of Luminescence. 170:282-287 |
| ISSN: | 0022-2313 |
| Popis: | We report on a 20-fold enhancement of the integrated photoluminescence (PL) emission of silicon nanocrystals, embedded in a matrix of silicon dioxide, induced by excited surface plasmons from silver nanoparticles, which are located in the vicinity of the silicon nanocrystals and separated from them by a silicon dioxide layer of a few nanometers. The electric field enhancement provided by the excited surface plasmons increases the absorption cross section and the emission rate of the nearby silicon nanocrystals, resulting in the observed enhancement of the photoluminescence, mainly attributed to a 20-fold enhancement in the emission rate of the silicon nanocrystals. The observed remarkable improvement of the PL emission makes silicon nanocrystals very useful material for photonic, sensor and solar cell applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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