Can doping boundary be curved?


#1

Hi,
I’m just staring to try DEVICE. It seems that when I define a doping region, the region can only be a rectangular prism. In other words, the boundary can only be straight, or rectangular. I wonder if I can define a curved boundary, e.g. a circular doping region. if so, how do I do it?

Regards,

Chuan


#2

Hi @chuan.xie, You can use the “import doping” object to define any arbitrary shape for your doping profile. Take a look at these posts:




#3

Thanks. I’ll try your suggestion.

Regards,

Chuan
PS. Can this be made more direct e.g. by adding more shapes under doping?


#4

Unfortunately no. The shape of the doping object is always a rectangular prism. What you can do to define arbitrary doping profiles is to set the doping at different points to different values.


#5

Ok. Thanks.
Does this also mean that when arbitrary profile is used, only uniform doping can be applied?

Chuan


#6

Sorry I didn’t get the question here. To clarify my previous comments,

  1. If you want a uniform rectangular prism shaped doping profile, use uniform doping object.
  2. If you want a diffusion pattern for the doping profile but still want to dope a volume shaped like a rectangular prism, use the diffusion doping object.
  3. For everything else use the import doping object and define your own doping profile using script.

#7

Ok. I got it now. Thanks.

Chuan