2026-04-13T07:36:17Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/85762024-06-14T09:37:20Zcom_2072_452955com_2072_2054col_2072_453063

2024-06-14T09:37:20Z urn:hdl:10256/8576 Anomalous crystallization of hydrogenated amorphous silicon during fast heating ramps Farjas Silva, Jordi Serra-Miralles, J. Roura Grabulosa, Pere Silici Silicon Nanopartícules Nanoparticles Microestructura Microstructure Calorimetria Calorimetry Thermal crystallization experiments carried out using calorimetry on several a-Si:H materials with different microstructures are reported. The samples were crystallized during heating ramps at constant heating rates up to 100 K/min. Under these conditions, crystallization takes place above 700 C and progressively deviates from the standard kinetics. In particular, two crystallization processes were detected in conventional a-Si:H, which reveal an enhancement of the crystallization rate. At100 K/min, such enhancement is consistent with a diminution of the crystallization time by a factor of 7. In contrast, no systematic variation of the resulting grain size was observed. Similar behavior was also detected in polymorphous silicon and silicon nanoparticles, thus showing that it is characteristic of a variety of hydrogenated amorphous silicon materials 2024-06-14T09:37:20Z 2024-06-14T09:37:20Z 2005 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10256/8576 info:eu-repo/semantics/altIdentifier/doi/10.1557/JMR.2005.0037 info:eu-repo/semantics/altIdentifier/issn/0884-2914 info:eu-repo/semantics/altIdentifier/eissn/2044-5326 Tots els drets reservats info:eu-repo/semantics/openAccess Materials Research Society © Journal of Materials Research, 2005, vol. 20, núm. 2, p. 277-281 Articles publicats (D-F)