| Autor: |
Gaspar D; CENIMAT/I3N, Departamento de Ciência dos Materiais and CEMOP/UNINOVA, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal., Pimentel AC, Mateus T, Leitão JP, Soares J, Falcão BP, Araújo A, Vicente A, Filonovich SA, Aguas H, Martins R, Ferreira I |
| Jazyk: |
angličtina |
| Zdroj: |
Scientific reports [Sci Rep] 2013; Vol. 3, pp. 1469. |
| DOI: |
10.1038/srep01469 |
| Abstrakt: |
Metallic nanoparticles (NPs) have received recently considerable interest of photonic and photovoltaic communities. In this work, we report the optoelectronic properties of gold NPs (Au-NPs) obtained by depositing very thin gold layers on glass substrates through thermal evaporation electron-beam assisted process. The effect of mass thickness of the layer was evaluated. The polycrystalline Au-NPs, with grain sizes of 14 and 19 nm tend to be elongated in one direction as the mass thickness increase. A 2 nm layer deposited at 250°C led to the formation of Au-NPs with 10-20 nm average size, obtained by SEM images, while for a 5 nm layer the wide size elongates from 25 to 150 nm with a mean at 75 nm. In the near infrared region was observed an absorption enhancement of amorphous silicon films deposited onto the Au-NPs layers with a corresponding increase in the PL peak for the same wavelength region. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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