Patent ID: 9312125
Filing Date: 2016-04-12
CPC Classification: C23C,H01L

Claim Text:
1. A cyclic deposition method for thin film formation, comprising: forming a silicon thin film on an object by injecting a silicon precursor into a chamber in which the object is loaded, depositing silicon on the object, and performing a first purge, removing an unreacted portion of the silicon precursor and reaction by-products from the interior of the chamber; after forming the silicon thin film, pre-processing a surface of the silicon thin film by forming a plasma atmosphere in the chamber and supplying a first reaction source having a hydrogen atom; and after pre-processing the surface of the silicon thin film, forming the silicon thin film as an insulating film including silicon, by forming the plasma atmosphere in the chamber and supplying a second reaction source having one or more oxygen atoms, one or more nitrogen atoms, or a mixture thereof, wherein the insulating film has a wet etch rate of 0.4 to 0.6.