Patent ID: 8530329
Filing Date: 2013-09-10
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device comprising: forming a first trench and a second trench in a semiconductor substrate; forming a first insulator to completely fill the first trench, the first insulator covering a bottom surface and lower sidewalls of the second trench and exposing upper sidewalls of the second trench; and forming a second insulator on the first insulator in the second trench; wherein the forming the first insulator includes supplying a carrier gas between about 2,000 and 8,000 SCCM, an oxidizer between about 200 and 1,100 SCCM, and a silazene precursor between about 500 and 2,000 SCCM into a reaction chamber under a pressure less than about 1.0 Torr and a temperature between about 30 and 70° C.; wherein the forming the first trench and the second trench comprises: