Chemical vapor deposition of ruthenium films for metal electrode applications

Abstract

The present invention provides a method of depositing ruthenium films on a substrate via liquid source chemical vapor deposition wherein the source material is liquid at room temperature and utilizing process conditions such that deposition of the ruthenium films occurs at a temperature in the kinetic-limited temperature regime. Also provided is a method of depositing a thin ruthenium film on a substrate by liquid source chemical vapor deposition using bis-(ethylcyclopentadienyl) ruthenium by vaporizing the bis-(ethylcyclopentadienyl) ruthenium at a vaporization temperature of about 100-300° C. to form a CVD source material gas, providing an oxygen source reactant gas and forming a thin ruthenium film on a substrate in a reaction chamber using the CVD source material gas and the oxygen source reactant gas at a substrate temperature of about 100-500° C.

Dependencies are inferred from the claim text.