Patent ID: 7790627
Filing Date: 2010-09-07
Classification: H01L

Abstract:
1. A method of manufacturing a metal compound thin film comprising: forming a first metal compound layer on a substrate by atomic layer deposition; performing first annealing on the first metal compound layer in an atmosphere containing a nitrogen compound gas, thereby diffusing nitrogen into the first metal compound layer; and forming a second metal compound layer on the first metal compound layer by atomic layer deposition; performing second annealing on the second metal compound layer in an atmosphere of which composition is different from that of the first annealing; forming a third metal compound layer on the second metal compound layer by atomic layer deposition; and performing a third annealing on the third metal compound layer in an atmosphere containing a nitrogen compound gas, thereby diffusing nitrogen into the third metal compound layer; wherein the second metal compound layer has nitrogen concentrations lower than that of the first and third metal compound layers.