Embodiments of the invention generally provide a method for forming a
doped silicon-containing material on a substrate. In one embodiment, the
method provides depositing a polycrystalline layer on a dielectric layer
and implanting the polycrystalline layer with a dopant to form a doped
polycrystalline layer having a dopant concentration within a range from
about 1.times.10.sup.19 atoms/cm.sup.3 to about 1.times.10.sup.21
atoms/cm.sup.3, wherein the doped polycrystalline layer contains silicon
or may contain germanium, carbon, or boron. The substrate may be heated
to a temperature of about 800.degree. C. or higher, such as about
1,000.degree. C., during the rapid thermal anneal. Subsequently, the
doped polycrystalline layer may be exposed to a laser anneal and heated
to a temperature of about 1,000.degree. C. or greater, such within a
range from about 1,050.degree. C. to about 1,400.degree. C., for about
500 milliseconds or less, such as about 100 milliseconds or less.