Patent ID: 7966969
Filing Date: 2011-06-28
Classification: C23C,H01L

Abstract:
1. A batch reactor, comprising: a vertically extending reaction chamber configured to accommodate a plurality of vertically spaced semiconductor substrates, the chamber having a top end and a bottom end; a purge gas injector accommodated inside the chamber, wherein the purge gas injector extends upwardly from proximate the bottom end of the reactor and has an opening to the reaction chamber proximate the top end of reaction chamber, wherein the purge gas injector is connected to a feed for purge gas and is configured to expel substantially all purge gas flowing through the purge gas injector out of the opening; a titanium precursor gas injector and a nitrogen precursor gas injector accommodated in the reaction chamber, the titanium precursor and nitrogen precursor gas injectors extending substantially a height of the chamber and connected to a process gas delivery system, the process gas delivery system configured to deliver titanium and nitrogen precursor gases to the reaction chamber, each precursor gas through a different one of the gas injectors; a controller programmed to perform a plurality of titanium nitride chemical vapor deposition cycles, each chemical vapor deposition cycle performed at a deposition temperature of less than about 500° C. and comprising the steps of: a gas exhaust proximate the bottom end of the reaction chamber.