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Thermally-Induced Structural Transformations on Polymorphous Silicon

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dc.creator Rath, Chandana
dc.creator Farjas Silva, Jordi
dc.creator Roura Grabulosa, Pere
dc.creator Kail, F.
dc.creator Roca i Cabarrocas, P. (Pere)
dc.creator Bertrán Serra, Enric
dc.date 2011-05-25T10:54:14Z
dc.date 2011-05-25T10:54:14Z
dc.date 2005
dc.date.accessioned 2024-12-16T10:27:07Z
dc.date.available 2024-12-16T10:27:07Z
dc.identifier 0884-2914
dc.identifier http://hdl.handle.net/2445/18202
dc.identifier 528908
dc.identifier.uri http://fima-docencia.ub.edu:8080/xmlui/handle/123456789/21919
dc.description Polymorphous Si is a nanostructured form of hydrogenated amorphous Si that contains a small fraction of Si nanocrystals or clusters. Its thermally induced transformations such as relaxation, dehydrogenation, and crystallization have been studied by calorimetry and evolved gas analysis as a complementary technique. The observed behavior has been compared to that of conventional hydrogenated amorphous Si and amorphous Si nanoparticles. In the temperature range of our experiments (650700 C), crystallization takes place at almost the same temperature in polymorphous and in amorphous Si. In contrast, dehydrogenation processes reflect the presence of different hydrogen states. The calorimetry and evolved gas analysis thermograms clearly show that polymorphous Si shares hydrogen states of both amorphous Si and Si nanoparticles. Finally, the total energy of the main SiH group present in polymorphous Si has been quantified.
dc.format 6 p.
dc.format application/pdf
dc.language eng
dc.publisher Materials Research Society
dc.relation Reproducció del document publicat a: http://dx.doi.org/10.1557/JMR.2005.0322
dc.relation Journal of Materials Research, 2005, vol. 20, núm. 9, p. 2562-2567
dc.relation http://dx.doi.org/10.1557/JMR.2005.0322
dc.rights (c) Materials Research Society, 2005
dc.rights info:eu-repo/semantics/openAccess
dc.source Articles publicats en revistes (Física Aplicada)
dc.subject Silici
dc.subject Calorimetria
dc.subject Nanopartícules
dc.subject Silicon
dc.subject Calorimetry
dc.subject Nanoparticles
dc.title Thermally-Induced Structural Transformations on Polymorphous Silicon
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/publishedVersion


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