Wl. Yang et al., SUPPRESSION OF BORON PENETRATION BY USING INDUCTIVE-COUPLING-NITROGEN-PLASMA IN STACKED AMORPHOUS POLYSILICON GATE STRUCTURE/, Electronics Letters, 33(13), 1997, pp. 1139-1140
A method is introduced for suppressing the penetration of boron for BF
2+-implanted pMOS devices with a stacked amorphous/ poly-Si (SAP) gate
structure. It is shown that after inductive-coupling-nitrogen-plasma
(ICNP) treatment, boron diffusion through the thin gale oxide is large
ly suppressed. As shown from the charge-to-breakdown measurements, the
ICNP process will improve the quality of pMOS devices, with Q(bd) thr
ee times higher than for the control samples.