Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/18212
Title: Anomalous crystallization of hydrogenated amorphous silicon during fast heating ramps
Author: Farjas Silva, Jordi
Serra-Miralles, J.
Roura Grabulosa, Pere
Bertrán Serra, Enric
Roca i Cabarrocas, P. (Pere)
Keywords: Calorimetria
Silici
Nanopartícules
Microestructura
Calorimetry
Silicon
Nanoparticles
Microstructure
Issue Date: 2005
Publisher: Materials Research Society
Abstract: 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.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1557/JMR.2005.0037
It is part of: Journal of Materials Research, 2005, vol. 20, núm. 2, p. 277-281
URI: http://hdl.handle.net/2445/18212
ISSN: 0884-2914
Appears in Collections:Articles publicats en revistes (Física Aplicada)

Files in This Item:
File Description SizeFormat 
528909.pdf413.86 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.