Patent ID: 6754553
Filing Date: 2004-06-22
Classification: H01J,H01L

Abstract:
A method of monitoring implantation parameters for characterization of an implantation apparatus, the method comprising:a) providing a substrate for use as a test wafer for monitoring the implantation parameters in an implantation chamber of the implantation apparatus; b) implanting first ions of a first dopant type into the substrate; c) annealing the substrate with the first ions implanted; d) obtaining the implantation parameters by measuring implantation-dependent characteristics of the substrate with the first ions implanted; e) implanting second ions of a dopant type that is opposite to said first dopant type into the substrate with the first ions implanted; f) annealing the substrate with the first and second ions implanted; g) obtaining the implantation parameters by measuring implantation-dependent characteristics of the substrate with the first and second ions implanted, reusing the substrate for measuring the implantation parameters; h) implanting third ions of a dopant type that is the same as said first dopant type into the substrate with said first and second ions implanted; i) annealing the substrate with the first, second and third ions implanted; and j) obtaining the implantation parameters by measuring implantation-dependent characteristics of the substrate with the first, second and third ions implanted, reusing the substrate for measuring the implantation parameters.