Guilin Sun
Ansys Employee

FORCE OHMIC: The force ohmic option is enabled by default.  When enabled, it creates an ohmic contact by matching the metals work-function with the semiconductors one.  If disabled then a Schottky contact is formed based on the difference in their work-functions.

因为金属电极在CHARGE仿真中被认为是理想电极,因此缺省一般采用欧姆电极,电极下面的掺杂也很强。如果掺杂较弱,或者能带差别大的,可以选用Schottky contact。当然你有最后权,可以比较一下这两种情况下差别有多大。