finite element method

[gauravsri589]

dear all....
can somebody suggest a book where they have explained finite element method by solving semiconductor equations and not heat equations........i am trying to built a simulator of semiconductor devices and could not understand the application of method in semiconductor equations

 

[bigdogguru]

Came across these papers sometime ago, is this the application of FEM you are looking for?

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Plently of references at the end of the papers!

Hope this helps in your quest.

 

[gauravsri589]

yes.........i have simulated the pn junction by plotting one dimensional poisson's equation by the element method...........problem is that it is a combination of linear elements........the electric field which is derivative of potential comes as a step function even though the shape of the potential is coming correct.......if i use basic fitting the equation is coming correct........number of elements taken is not small.......its 2^10-1 inside elements.........do i have to us sparse matrix technique for getting more elements or these elements are enough.....what am i doing wrong in the simulation?..........