Title :
The solution of a numerical problem encountered when adding a mobility model to a finite-element device simulator
Author_Institution :
Harris Semicond., Melbourne, FL, USA
fDate :
8/1/1988 12:00:00 AM
Abstract :
The addition of a mobility model to a finite-element simulator was found to create a convergence problem identified with the addition of positive terms to the off-diagonal elements in the solution matrix. Fast convergence rates were recovered by carefully adjusting the solution matrix such that the off-diagonal elements in question were all nonpositive
Keywords :
carrier mobility; semiconductor device models; convergence problem; finite-element device simulator; mobility model; numerical problem; off-diagonal elements; positive terms; solution matrix; Convergence of numerical methods; Design automation; Finite difference methods; Finite element methods; Iterative methods; Jacobian matrices; MOSFET circuits; Poisson equations; Voltage;
Journal_Title :
Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
