Patent ID: 6767834
Filing Date: 2004-07-27
Classification: H01L

Abstract:
A method of manufacturing a contact of a semiconductor device, comprising the steps of:providing a semiconductor substrate on which an interlayer is formed on an underlayer comprising silicon; forming a contact hole in the interlayer using a photoresist pattern as an etching mask, wherein a surface of the underlayer is exposed at the bottom of the contact hole; loading the semiconductor substrate into apparatus having a plasma pretreatment module and a deposition module connected to each other, the plasma pretreatment module comprising a vacuum chamber, and plasma generating apparatus operative to provide the vacuum chamber with plasma; transferring the semiconductor substrate into the vacuum chamber of the plasma pretreatment module; ashing the photoresist pattern, in the vacuum chamber of the plasma pretreatment module, to remove the photoresist pattern; subsequently removing a damaged layer at the surface of the underlayer that defines the bottom of the contact hole, in the vacuum chamber of the plasma pretreatment module; subsequently cleaning the semiconductor substrate, in the vacuum chamber of the plasma pretreatment module; subsequently transferring the semiconductor substrate, while in a vacuum, from the vacuum chamber of the plasma pretreatment module to the deposition module; and depositing material onto the substrate that fills the contact hole, in the deposition module.