C. Monget et al., Plasma polymerized methylsilane I: Characterization of thin photosensitivefilms for advanced lithography applications, J VAC SCI B, 18(5), 2000, pp. 2534-2542
Plasma polymerized methylsilane (PPMS) films are promising photosensitive l
ayers for 248 and 193 nm lithography applications. These a-Si1-xCx:H films
are deposited in a low power plasma of methylsilane gas using a commercial
tool. The effect of substrate temperature, pressure in the chamber and rf p
ower injected in the source on optical properties and chemical composition
of the PPMS films have been studied using spectroscopic ellipsometry and Fo
urier transform infrared (FTIR) spectroscopy. FTIR experiments show that th
e PPMS structure is organized around a SI:H network with intact methyl grou
ps. The correlation between deposition parameters and PPMS films properties
is discussed. (C) 2000 American Vacuum Society. [S0734-211X(00)01205-1].