Abstract:
A semiconductor pattern is formed on a substrate. An interlayer insulating layer is formed on the semiconductor pattern. A contact hole in the interlayer insulating layer is formed the semiconductor pattern is exposed. A lower plug is formed in the contact hole by a selective epitaxial growth (SEG) process. An upper plug is farmed in the contact hole on the lower plug by alternately and repeatedly performing a deposition process and an etching process.
Abstract:
A semiconductor pattern is formed on a substrate. An interlayer insulating layer is formed on the semiconductor pattern. A contact hole in the interlayer insulating layer is formed the semiconductor pattern is exposed. A lower plug is formed in the contact hole by a selective epitaxial growth (SEG) process. An upper plug is formed in the contact hole on the lower plug by alternately and repeatedly performing a deposition process and an etching process.