Patent ID: 7846835

Claim:
A method for depositing a barrier layer onto a substrate, comprising: depositing a layer of titanium (Ti) onto the substrate using an ionized metal plasma (IMP) physical vapor deposition process, wherein the IMP physical vapor deposition process includes, generating gaseous ions, accelerating the gaseous ions towards a titanium target, sputtering titanium atoms from the titanium target using the gaseous ions, ionizing the titanium atoms using a plasma, and depositing the ionized titanium atoms onto the substrate to form the layer of Ti; depositing a first layer of titanium nitride (TiN) onto the layer of Ti using a metal organic chemical vapor deposition (MOCVD) process; depositing a second layer of TiN onto the first layer of TiN using a thermal chemical vapor deposition (CVD) process using titanium tetrachloride (TiCl4) gas and ammonia (NH3); and performing an annealing process in the presence of nitrogen (N2) and heating to a temperature of between about 500 Celsius (° C.) to about 750° C.