Patent ID: 8586463
Filing Date: 2013-11-19
Classification: H01L

Abstract:
1. A method for fabricating a layer including nickel monosilicide NiSi on a substrate including silicon, the method comprising the following steps in succession: a) a step of incorporating, on a portion of a thickness of the substrate, an element selected from W, Ti, Ta, Mo, Cr, and mixtures thereof; b) a step of depositing, on the substrate obtained in step a), one of a first layer configuration and a second layer configuration, where the first layer configuration includes a layer of nickel and a layer of an element selected from Pt, Pd, Rh, and mixtures thereof, and where the second layer configuration includes a layer including both nickel and an element selected from Pt, Pd, Rh, and mixtures thereof; c) a step of heating the one of the first and second layer configurations to a temperature sufficient to form a layer including nickel silicide that forms optionally as nickel monosilicide NiSi; d) a step of incorporating fluorine in the layer including nickel silicide obtained in step c); and e) optionally, a step of heating the layer obtained in step d) to a temperature sufficient to convert the layer obtained in step d) to a layer including nickel silicide entirely formed of nickel monosilicide NiSi.