2026-04-13T13:25:59Zhttps://recercat.cat/oai/request

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

00925njm 22002777a 4500 dc Farjas Silva, Jordi author Serra-Miralles, J. author Roura Grabulosa, Pere author 2005 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 http://hdl.handle.net/10256/8576 Silici Silicon Nanopartícules Nanoparticles Microestructura Microstructure Calorimetria Calorimetry Anomalous crystallization of hydrogenated amorphous silicon during fast heating ramps