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Semiconductor diode example

Posted 03.08.2012, 10:43 GMT-4 Low-Frequency Electromagnetics, Materials, Parameters, Variables, & Functions Version 4.3 0 Replies

Martin Hediger
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Dear Comsol Users
I'm trying to redo the semiconductor diode example. The model defines a piecewise Gaussian distribution function for the doping concentration, depending on the x- and y-coordinates.
I was thinking the most reasonable thing to do is to implement this function using the "Piecewise Function" node from the "Global Definitions" node.
I have two questions:
- How do I implement the x- and y- interval condition, e.g. x>x1 y>y1? To me this kind of requires a logical && evaluation.
- How is the expression x>x1 implemented in terms of an interval? Should it be something like "Start=x1, End=Inf"?

Thanks for any comments or hints.
0 Replies Last Post 03.08.2012, 10:43 GMT-4
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