Patent ID: 6555437
Filing Date: 2003-04-29
Classification: H01L

Abstract:
A method of making a MOSFET, comprising:providing a substrate having a gate oxide and gate formed thereon; implanting a shallow source/drain extension dopant in the substrate, thereby forming a source extension region and a drain extension region; forming a spacer on a sidewall of the gate; forming raised source region and a raised drain region on the substrate; implanting a deep source/drain dopant in the substrate, thereby a deep source region and a deep drain region; annealing the substrate a first time; removing the spacer, thereby forming a void; implanting a deep halo dopant through the void and in the substrate, thereby forming a deep halo region; annealing the substrate a second time; implanting a shallow halo dopant in the substrate, thereby forming a shallow halo region; annealing the substrate a third time; and completing fabrication of the MOSFET.