Patent ID: 9287137
Filing Date: 2016-03-15
CPC Classification: C23C,H01L

Claim Text:
1. A method for forming a silicon layer on a substrate comprising: transferring a substrate into a processing chamber; supplying a gas mixture having a silicon-based gas, an inert gas and substantially no hydrogen gas into the processing chamber, the gas mixture having a volumetric flow rate per surface area of substrate of the inert gas that is between about 1.8 times to about 79 times a volumetric flow rate per surface area of substrate of the silicon-based gas; and applying a RF power to ignite the gas mixture into a plasma; and forming an amorphous silicon layer on the substrate in the presence of the plasma; in-situ thermal treating the substrate after the amorphous silicon layer is formed on the substrate to a temperature between about 450 degrees Celsius and about 500 degrees Celsius in the processing chamber for less than 5 minutes; and laser annealing the amorphous silicon layer to form a polysilicon layer having predominately crystalline plane in <111> and in <220>.