Cc. Tsan et al., Deposition temperature effects of high density plasma chemical vapor deposition films for subquarter micron devices application, J VAC SCI B, 17(5), 1999, pp. 2341-2344
A detailed study for the high density plasma chemical vapor deposition (HDP
-CVD) process was presented to prevent metal distortion issues and metal co
rrosion risk. The deposition temperature increased and then saturated as th
e film deposited, based on the correlation of wet-etch rate and deposition
temperature. The stress of HDP-CVD film also trended up, but the deposition
rate decreased. Lowering of the deposition temperature of HDP-CVD film was
key to preventing the metal distortion. A two-step deposition recipe with
10 s Ar cooldown was developed to solve the metal distortion issue on subqu
arter micron devices. (C) 1999 American Vacunm Society. [S0734-211X(99)0490
5-7].