Patent ID: 7087515
Filing Date: 2006-08-08
Classification: H01L

Abstract:
1. A method for forming a flowable dielectric layer in a semiconductor device, the method comprising the steps of: a) forming a plurality of patterns on a semiconductor substrate, wherein narrow and deep gaps are formed therebetween; b) forming a flowable dielectric layer to fill the gaps between the patterns wherein step b) is carried out at a temperature in a range of about −10° C.—to about 150° C. under a pressure ranging from about 10 mTorr to about 100 Torr, wherein a reaction source uses a mixture gas of SiH c) carrying out an annealing process for densifying the flowable dielectric layer and removing moisture therein; d) forming a plurality of contact holes by selectively etching the flowable dielectric layer so as to expose predetermined portions of the semiconductor substrate; e) forming a barrier layer on sidewalls of the contact holes for preventing micro-pores in the flowable dielectric layer; f) carrying out a cleaning process in order to remove native oxides and defects on the semiconductor substrate; and g) forming a plurality of contact plugs by filling a conductive material into the contact plugs.