Patent ID: 8945675
Filing Date: 2015-02-03
Classification: C23C,H01G,H01L

Abstract:
1. A process for producing a doped titanium oxide thin film on a substrate in a reaction chamber by atomic layer deposition, the process comprising: a titanium oxide deposition cycle comprising: providing a vapor phase reactant pulse comprising a titanium precursor into the reaction chamber to form no more than about a single molecular layer of the titanium precursor on the substrate; removing excess reactant from the reaction chamber, if any; providing a vapor phase reactant pulse comprising an oxygen precursor to the reaction chamber such that the oxygen precursor reacts with the titanium precursor on the substrate; removing excess second reactant and any reaction byproducts from the reaction chamber; and a dopant oxide deposition cycle comprising: providing a vapor phase reactant pulse comprising a niobium or tantalum precursor to the reaction chamber; removing excess reactant from the reaction chamber; providing a vapor phase reactant pulse comprising an oxygen precursor to the reaction chamber such that the oxygen precursor reacts with the niobium or tantalum precursor on the substrate; removing excess reactant and any reaction byproducts from the reaction chamber; wherein the titanium oxide cycle and dopant oxide cycles are repeated until a thin film of a desired thickness and composition comprising Ti wherein the doped titanium oxide thin film is electrically conductive; and wherein the doped titanium oxide thin film is in direct contact with a dielectric layer in a semiconductor device.