SiP precipitation within the doped silicon lattice, concomitant with phosphorus predeposition

Abstract
From experiments of thermal predeposition of phosphorus in silicon, performed at 920 °C and followed by neutron activation analysis and TEM observations, it is concluded that SiP precipitation takes place in the furnace during the isothermal process. In fact, the surface concentration of phosphorus increases with predeposition time attaining values well above the solid solubility; in addition the flat rodlike SiP precipitates grow with the time of predeposition, according to a parabolic law. Finally, considerations of the size of the precipitates indicate that they are not formed during the cooling stage subsequent to predeposition.

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