The improvement of short-channel effects due to oxidation-induced boron redistribution for counter-implantation p-MOSFET's

Delayed appearance of short-channel effects in the threshold voltage falloff has been observed for counterimplantation p-MOSFETs. The phenomenon is attributed to the oxidation-induced boron redistribution along the channel. SUPREM-3 and MINIMOS-5 and the Orlowski method were used to quantitatively characterize this behavior. Quite good agreement between simulation and experimental data were obtained. It was found that the device characteristics of submicrometer counterimplanted p-MOSFETs are improved due to the effects of boron redistribution near the channel edge. >