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Costa i Balanzat, Josep
Roura Grabulosa, Pere Morante i Lleonart, Joan R. Bertrán Serra, Enric |
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| 1998 | |
| Previous results concerning radiative emission under laser irradiation of silicon nanopowder are reinterpreted in terms of thermal emission. A model is developed that considers the particles in the powder as independent, so under vacuum the only dissipation mechanism is thermal radiation. The supralinear dependence observed between the intensity of the emitted radiation and laser power is predicted by the model, as is the exponential quenching when the gas pressure around the sample increases. The analysis allows us to determine the sample temperature. The local heating of the sample has been assessed independently by the position of the transverse optical Raman mode. Finally, it is suggested that the photoluminescence observed in porous silicon and similar materials could, in some cases, be blackbody radiation | |
| application/pdf | |
| Costa i Balanzat, Josep, Roura i Grabulosa, Pere, Morante i Lleonart, Joan R., i Bertran Serra, Enric (1998). Blackbody emission under laser excitation of silicon nanopowder produced by plasma-enhanced chemical-vapor deposition. Journal of Applied Physics, 83 (12), 7879 - 7885. Recuperat 28 setembre 2010, a http://jap.aip.org/resource/1/japiau/v83/i12/p7879_s1 | |
| 0021-8979 | |
| http://hdl.handle.net/10256/3050 | |
| eng | |
| American Institute of Physics | |
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Reproducció digital del document publicat a: http://dx.doi.org/10.1063/1.367965 Articles publicats (D-F) |
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| © Journal of Applied Physics, 1998, vol. 83, p. 7879-7885 | |
| Tots els drets reservats | |
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Espectroscòpia de Raman
Fotoluminescència Semiconductors Silici Photoluminescence Raman spectroscopy Silicon |
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| Blackbody emission under laser excitation of silicon nanopowder produced by plasma-enhanced chemical-vapor deposition | |
| info:eu-repo/semantics/article | |
| DUGiDocs |
