Patent ID: 7989366
Filing Date: 2011-08-02
Classification: H01L

Abstract:
1. A method of activating dopants in a doped semiconductor substrate, the method comprising: preheating the doped semiconductor substrate to a pre-deposition temperature in the absence of a plasma in order to avoid exposing the substrate to a heating plasma whereby a decrease in the conductivity of the doped semiconductor substrate is avoided; flowing a carbon precursor into a substrate processing chamber, wherein the preheated doped semiconductor substrate is disposed within the substrate processing chamber; forming a plasma from the carbon precursor in the substrate processing chamber; depositing a carbon film over the substrate with the plasma; maintaining a temperature of the substrate while depositing the carbon film less than 500° C.; and exposing the deposited carbon film to electromagnetic radiation for a period less than 10 ms, wherein the deposited carbon film has an extinction coefficient greater than 0.3 at a wavelength comprised by the electromagnetic radiation.