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Kinetic Study Of Crystallisation In Amorphous Thin Lpcvd Si Films

Published online by Cambridge University Press:  15 February 2011

B. Pieraggi
Affiliation:
LMP, URA 445 du CNRS, ENSCT, 118 route de Narbonne, 31077 Toulouse Cedex, France
J. P. Guillemet
Affiliation:
CEMES-LOE, UPR 8011 du CNRS, BP 4347, 31055 Toulouse Cedex, France
B. de Mauduit
Affiliation:
CEMES-LOE, UPR 8011 du CNRS, BP 4347, 31055 Toulouse Cedex, France
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Abstract

The crystallisation behaviour of LPCVD silicon films has been investigated by TEM from in situ isothermal annealing of undoped a-Si films deposited from disilane (Si2H6) at temperatures 450,465 and 480 °C and at gas pressure of 200 MTorr. Nucleation kinetics, grain growth rates and crystallisation kinetics were determined for temperatures ranging from 600 to 675 °C. Nucleation kinetics have been experimentally determined in the early first stages of annealing : they do not show any steady-state rate and are fitted according to a power law. Experimental data for crystallisation kinetics are fitted by an Avrami law without introducing any incubation time.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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References

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