Patent ID: 6979633
Filing Date: 2005-12-27
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: i) preparing a semiconductor substrate on which a lower structure having a junction region is formed; ii) forming an interlayer dielectric film over a whole surface of the semiconductor substrate; iii) forming a contact hole exposing the junction region by etching the interlayer dielectric film; iv) sequentially dry-cleaning and wet-cleaning a surface of the semiconductor substrate exposed by the contact hole, wherein any oxide layer formed on the junction region exposed by the contact hole is removed; v) preliminary treating the washed contact surface under an atmosphere of a reducing gas to remove a native oxide film which is formed on the contact surface due to air exposure; vi) additionally in-situ doping an impurity to a surface of the junction region so that impurity damages on the preliminary-treated contact surface are compensated for; and vii) in-situ depositing a conductive film on the contact hole and the interlayer dielectric film.