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The diffusion and segregation of hydrogen in surface amorphous silicon layers during solid phase epitaxy (SPE) is modeled. The SPE and H concentration profiles from J. Roth et al., Mat. Res. Soc. Symp. Proc. 205, 45 (1992) are used to test H segregation and diffusion models. Excellent agreement is obtained with a trap limited diffusion model. This model has previously been found to describe the diffusion of fluorine well. The H segregation coefficient at the crystalline-amorphous interface is determined at a temperature of 606oC to be 0.064. The possible temperature dependence of the segregation coefficient and its effect on SPE are also discussed.
IOP Publishing
Publication date: 
1 Oct 2010

Brett C Johnson, Massimo Mastromatteo, Davide De Salvador, Enrico Napolitani, Alberto Carnera, Jeffrey McCallum

Biblio References: 
Volume: 33 Issue: 11 Pages: 157
ECS Transactions