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Theoretical Investigation of Implanted Dopant Diffusion From a Silicide Layer to the Silicon Wafer for Ultra Shallow P-N Junction Formation
Published online by Cambridge University Press: 15 February 2011
Abstract
In this work a theoretical model is presented to analyze the technique recently suggested to form shallow p-n junction. According to this technique a silicide acts as a source of a dopant and it is followed by controlled diffusion anneal to accomplish the dopant penetration into a silicon wafer.
In our analysis the dependence of the p-n junction depth on process parameters is discussed. The model considers two cases, namely, with and without dopant evaporation.
Experimental data for B diffusion from CoSi2 acting as the source are used to evaluate our theoretical model. The agreement between theoretical and experimental results is satisfactory.
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- Copyright © Materials Research Society 1995