Journal of the Electrochemical Society, Vol.142, No.6, 1987-1991, 1995
TiSi2 Integration Ina Submicron CMOS Process .1. Salicide Formation
A self-aligned silicidation scheme for a submicron complementary metal oxide semiconductor process with three different types of poly-Si gate doping is discussed. High temperature (730 degrees C) rapid thermal processing of a Ti layer capped with TiN was found to yield the stable C54 material phase. TiSi2 formed on moderately doped mono- and poly-Si can withstand aggressive environments of low pressure chemical vapor deposited tetraethylorthosilicate deposition, while the films formed on more heavily doped substrates were found to require additional stabilization at higher temperatures.
Keywords:SILICIDE