Patent ID: 6682980
Filing Date: 2004-01-27
Classification: H01L

Abstract:
A method of forming a PMOS transistor within a semiconductor substrate, comprising:forming a gate over a portion of the semiconductor substrate, thereby defining a source region and a drain region in the semiconductor substrate with a channel region therebetween; pre-amorphizing the source region and the drain region of the semiconductor substrate with an angled amorphization implant, wherein the angled amorphization implant amorphizes the semiconductor substrate thereat and in portions of the channel region near a lateral edge of the gate, thereby defining an amorphized source extension region and drain extension region, respectively; implanting the source and drain extension regions with fluorine; implanting the source region and the drain region with a p-type source/drain extension implant; and annealing to regrow the amorphized regions to a substantially crystalline form.