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http://hdl.handle.net/2445/10651
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DC Field | Value | Language |
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dc.contributor.author | Roura Grabulosa, Pere | cat |
dc.contributor.author | Costa i Balanzat, Josep | cat |
dc.contributor.author | Sardin, Georges | cat |
dc.contributor.author | Morante i Lleonart, Joan Ramon | cat |
dc.contributor.author | Bertrán Serra, Enric | cat |
dc.date.accessioned | 2009-12-29T11:22:20Z | - |
dc.date.available | 2009-12-29T11:22:20Z | - |
dc.date.issued | 1994 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/10651 | - |
dc.description.abstract | The dynamics of the infrared photoluminescence (PL) in silicon powder grown by plasma-enhanced chemical-vapor deposition (PECVD) of silane is reported. A nonlinear dependence of PL intensity on laser power of the form I a: P" with n as high as 7 has been found, indicating a multistep-multiphoton excitation process. To confi.rm this hypothesis a very detailed theoretical and experimental analysis has been performed. As a result, the lifetimes of several levels in the excitation chain have been determined, as well as the optical cross section (u). For the slowest level u= 3 X 10- 18 cm2 and the lifetime is as long as 400 ms. As the energy of the emitted photon is smaller than that of the excitation photon, a model involving a considerable nonradiative energy relaxation, together with a tunnel effect is proposed. | - |
dc.format.extent | 10 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | cat |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.50.18124 | cat |
dc.relation.ispartof | Physical Review B, 1994, vol. 50, núm. 24, p. 124-133 | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevB.50.18124 | - |
dc.rights | (c) The American Physical Society, 1994 | cat |
dc.source | Articles publicats en revistes (Física Aplicada) | - |
dc.subject.classification | Matèria condensada | cat |
dc.subject.classification | Propietats òptiques | cat |
dc.subject.classification | Ciència dels materials | cat |
dc.subject.other | Optical properties | eng |
dc.subject.other | Materials science | eng |
dc.subject.other | Condensed matter | eng |
dc.title | Photoluminiscence in silicon powder grown by plasma-enhanced chemical-vapour deposition: Evidence of a multistep-multiphoton excitation process | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 90872 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Aplicada) |
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