Potential lag in continuous model.

[chenq...@gmail.com]

Hi Juan:

While I check the potential profiles through VISIT, I get different values at the interface between semiconductor and insulator. Please check the image. I use the continuous model for potential.

Then I intend to extract the actual data in Bevsim, but it,s hard to find the function that can directly realize this intention. Can you give me some advice?

Regards,

QS.C

[Juan Sanchez]

Hi,

Please try:

https://devsim.net/releasenotes.html?highlight=element%20index#element-information

https://devsim.net/CommandReference.html#devsim.get_element_node_list

In 2d, it should give you the list of node pairs for each edge on the interface.  You would use the command once for each region on the interface.

You can then get the Potential node values from each region and compare the nodes.  You can use the "coordinate_index" node model in each region to ensure that the pairs are matching.

For example, adding this to the end of testing/mesh2d.py:

for r in ("r0", "r1"):

  ci = devsim.get_node_model_values(device=device, region=r, name="coordinate_index")

  nl = devsim.get_element_node_list(device=device, region=r, interface="i0")

  print("\nregion %s:" % r)

  for i in nl:

    print(tuple([int(ci[x]) for x in i]))

shows that the coordinate indexes match up in both regions of an interface.

region r0:

(6, 19)

(19, 32)

(32, 45)

(45, 58)

(58, 71)

(71, 84)

(84, 97)

(97, 110)

(110, 123)

(123, 136)

region r1:

(6, 19)

(19, 32)

(32, 45)

(45, 58)

(58, 71)

(71, 84)

(84, 97)

(97, 110)

(110, 123)

(123, 136)

Alternatively, you can create 2 interface models.  One which returns Potential@r0 and Potential@r1 for each node on the interface.

Regards,

Juan

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[chenq...@gmail.com]

Hi Juan:

Thanks for your exquisite reply. I will try it immediately.

Regards,

QS.C