Patent ID: 8840958
Filing Date: 2014-09-23
Classification: C23C

Abstract:
1. A method of depositing a layer of material on a substrate, comprising: injecting source precursor into a reaction chamber of an injector via a first channel formed in the injector; sequentially exposing different portions of the substrate to the source precursor below the reaction chamber; routing excess source precursor remaining after exposure of the different portions of the substrate to the injected source precursor to a first exhaust portion formed in the injector by injecting a first amount of purge gas via a first purge gas channel and a second amount of purge gas via a second purge gas channel, the first amount larger than the second amount; injecting purge gas via the first channel into the reaction chamber after injecting the source precursor into the reaction chamber; injecting reactant precursor into the reaction chamber of the injector via a second channel formed in the injector after injecting the purge gas into the reaction chamber; sequentially exposing the different portions of the substrate to the reactant precursor below the reaction chamber; routing excess reactor precursor remaining after exposure of the different portions of the substrate to the injected reactor precursor to a second exhaust portion formed in the injector by injecting a third amount of purge gas via the first purge gas channel and a fourth amount of purge gas via the second purge gas channel, the fourth amount larger than the third amount, the second exhaust portion separate from the first exhaust portion; and injecting a purge gas via the second channel into the reaction chamber after injecting the reactant precursor into the reaction chamber.