Patent ID: 7399364
Filing Date: 2008-07-15
Classification: H01L

Abstract:
1. A system for forming a cap layer over a dielectric layer on a substrate, the system comprising: a housing configured to form a processing chamber; a gas distribution system to flow about 200 mgm to about 8000 mgm of a silicon containing precursor, about 2000 to about 20000 sccm of oxygen (O a plasma generation system configured to form a plasma within said processing chamber, wherein said plasma generation system comprises one or more RF generators that supply about 50 watts to about 100 watts of low frequency RF power to the plasma, and about 100 watts to about 600 watts of high frequency RF power to the plasma; a substrate holder configured to hold the substrate about 350 to about 450 mils from the gas distribution faceplate within the processing chamber; and a system controller to control the gas distribution system and the plasma generation system, wherein the controller executes system control software to: (a) form a first plasma from the silicon containing precursor to pretreat a deposition surface of a dielectric layer, and wherein the pretreatment deposits silicon in at least one pore on the deposition surface; and (b) form a second plasma from the oxygen and the silicon containing precursor, wherein the second plasma deposits the cap layer on the pretreated dielectric layer, the cap layer having a thickness of about 600 Å or less, and a compressive stress of about 200 MPa or more.