Patent ID: 7563715

Claim:
A process for producing a boron or silicon doped metal nitride thin film on a substrate in a reaction chamber by atomic layer deposition, the process comprising at least one ALD cycle in which the following steps are performed in order: providing a first vapor phase reactant pulse comprising a metal precursor into the reaction chamber to form no more than about a single molecular layer of the metal precursor on the substrate; removing excess first reactant from the reaction chamber; providing a second vapor phase reactant pulse comprising a nitrogen precursor to the reaction chamber such that the nitrogen precursor reacts with the metal precursor on the substrate; removing excess second reactant and any reaction by-products from the reaction chamber; providing a third vapor phase reactant pulse comprising a silicon or boron precursor to the reaction chamber; removing excess third reactant and any reaction by-products from the reaction chamber; providing a fourth vapor phase reactant pulse comprising a nitrogen precursor to the reaction chamber; and removing excess fourth reactant and any reaction by-products from the reaction chamber.