Hard X-ray Photoelectron spectroscopy (HX-PES) study on chemical binding states of ultra shallow plasma-doped silicon layer for the application of advanced ULSI devices

We took HX-PES measurement (Si 1s) on silicon samples doped by plasma doping (PD) for the first time before and after annealing using either spike RTA or flash lamp anneal (FLA) in SPring-8. After PD, the carrier density of n-Si substrate decreased to intrinsic Si level due to defect induced carrier traps. After annealing, the results revealed that the chemical binding states of the doped samples were well recovered showing high impurity activation.