Patent ID: 7838414
Filing Date: 2010-11-23
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising the steps of: forming a low dielectric constant layer to fill gaps between conductive lines formed on a semiconductor substrate; performing a primary outgassing process to remove an outgassing source contained in the low dielectric constant layer; performing a secondary outgassing process to remove a —CH-based outgassing source and a porogen remaining after the primary outgassing process; forming a capping layer on the low dielectric constant layer performed the first and secondary outgassing processes; and strengthening adhesion between the low dielectric constant layer and the capping layer, wherein the step of performing the secondary outgassing process and the step of strengthening adhesion between the low dielectric constant layer and the capping layer are conducted using ultraviolet rays, wherein a wavelength of ultraviolet rays used in the step of performing the secondary outgassing process is longer than a wavelength of ultraviolet rays used in the step of strengthening adhesion between the lower dielectric constant layer and the capping layer.