Patent ID: 9190276
Filing Date: 2015-11-17
Classification: H01L,Y02E,Y02P

Abstract:
1. A method of diffusing an impurity-diffusing component comprising: forming a first diffusing agent layer containing a first conductivity-type impurity diffusing component on the surface of a semiconductor substrate; calcining the first diffusing agent layer when the first diffusing agent layer is formed on the surface of the semiconductor substrate and while a second diffusing agent layer containing a second conductivity-type impurity diffusing component is not yet formed; forming the second diffusing agent layer on the surface of the semiconductor substrate excluding a region where the first diffusing agent layer is formed; and heating the semiconductor substrate at a temperature higher than a calcination temperature to diffuse the first conductivity-type impurity diffusing component and the second conductivity-type impurity diffusing component into the semiconductor substrate.