A method of fabricating a MOSFET device featuring a raised source/drain
structure on a heavily doped source/drain region as well as on a portion
of a lightly doped source/drain (LDD), region, after removal of an
insulator spacer component, has been developed. After formation of an LDD
region a composite insulator spacer, comprised of an underlying silicon
oxide spacer component and an overlying silicon nitride spacer component,
is formed on the sides of a gate structure. Formation of a heavily doped
source/drain is followed by removal of the silicon nitride spacer
resulting in recessing of, and damage formation to, the heavily doped
source/drain region, as well as recessing of the gate structure. Removal
of a horizontal component of the silicon oxide spacer component results
in additional recessing of the heavily doped source/drain region, and of
the gate structure. A selective epitaxial growth procedure is then used
to form a raised, single crystalline silicon structure on the recessed
and damaged heavily doped source/drain and LDD regions, while a
polycrystalline silicon structure is grown on the underlying recessed
gate structure. Metal silicide is then formed on the raised, single
crystalline silicon structure and on the polycrystalline silicon
structure.