Patent ID: 8501632
Filing Date: 2013-08-06
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, the method comprising: forming at least one trench in a semiconductor substrate having a top surface, the at least one trench comprising sidewalls and a bottom surface; forming an oxide liner on the sidewalls and the bottom surface of the at least one trench, wherein the oxide liner is formed directly on the semiconductor substrate; forming a nitride liner directly on the oxide liner and over the top surface of the semiconductor substrate using atomic layer deposition (ALD), the nitride liner having a thickness of about 3 Å to about 25 Å; treating the nitride liner, wherein treating the nitride liner comprises treating the nitride liner with a plasma process, a heat process, a UV process, or combinations thereof, in order to alter a tensile or compressive stress; and completely filling the at least one trench in a single process with an insulating material directly on the nitride liner.