Patent ID: 8999798
Filing Date: 2015-04-07
Classification: H01J,H01L

Abstract:
1. A method for forming an n-type metal oxide semiconductor (NMOS) transistor, comprising: (a) providing a substrate having a p-type silicon region; (b) depositing a silicon seed layer atop the p-type silicon region using a first process with a first process gas; (c) depositing a silicon-containing bulk layer comprising silicon and an n-type dopant without a lattice adjusting element atop the silicon seed layer using a second process with a second process gas different than the first process gas; (d) implanting the lattice adjusting element into the silicon-containing bulk layer comprising silicon and the n-type dopant without the lattice adjusting element; and (e) annealing the silicon-containing bulk layer with an energy beam after implantation in (d).