Finite element solution of the fundamental equations of semiconductor devices. I
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- by Miloš Zlámal PDF
- Math. Comp. 46 (1986), 27-43 Request permission
Abstract:
We investigate the nonstationary equations of the semiconductor device theory consisting of a Poisson equation for the electric potential $\psi$ and of two highly nonlinear continuity equations for carrier densities n and p. We use simplicial elements with linear polynomials and four-node two-dimensional and eight-node three-dimensional isoparametric elements. There are constructed finite element solutions such that the current densities ${{\mathbf {J}}_n}$, ${{\mathbf {J}}_p}$ and the electric field strength $\left \| {\nabla \psi } \right \|$ are constant on each element. Two schemes are proposed: one is nonlinear, the other is partly linear. The schemes preserve the property of the exact solution (corresponding to the physical meaning) that the carrier densities n and p are positive. Existence of the solution is proved in both cases, unicity in the second case. A subsequent paper II will be devoted to problems of stability and convergence.References
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E. M. Buturla, P. E. Cottrell, B. M. Grossman & K. A. Salsburg, "Finite-element analysis of semiconductor devices: The FIELDAY PROGRAM," IBM J. Res. Develop., v. 25, 1981, pp. 218-231.
- H. Gajewski, On existence, uniqueness and asymptotic behavior of solutions of the basic equations for carrier transport in semiconductors, Z. Angew. Math. Mech. 65 (1985), no. 2, 101–108 (English, with German and Russian summaries). MR 841263, DOI 10.1002/zamm.19850650210
- V. Girault and P.-A. Raviart, Finite element approximation of the Navier-Stokes equations, Lecture Notes in Mathematics, vol. 749, Springer-Verlag, Berlin-New York, 1979. MR 548867, DOI 10.1007/BFb0063453
- Peter A. Markowich, A singular perturbation analysis of the fundamental semiconductor device equations, SIAM J. Appl. Math. 44 (1984), no. 5, 896–928. MR 759704, DOI 10.1137/0144064
- M. S. Mock, An initial value problem from semiconductor device theory, SIAM J. Math. Anal. 5 (1974), 597–612. MR 417573, DOI 10.1137/0505061
- Michael S. Mock, Analysis of mathematical models of semiconductor devices, Advances in Numerical Computation Series, vol. 3, Boole Press, Dún Laoghaire, 1983. MR 697094
- J. M. Ortega and W. C. Rheinboldt, Iterative solution of nonlinear equations in several variables, Academic Press, New York-London, 1970. MR 0273810 D. L. Scharfetter & H. K. Gummel, "Large signal analysis of a silicon Read diode oscillator," IEEE Trans. Electron. Devices, v. ED-16, 1969, pp. 64-77. O. C. Zienkiewicz, The Finite Element Method, McGraw-Hill, London, 1977.
- Miloš Zlámal, A finite element solution of the nonlinear heat equation, RAIRO Anal. Numér. 14 (1980), no. 2, 203–216 (English, with French summary). MR 571315, DOI 10.1051/m2an/1980140202031
Additional Information
- © Copyright 1986 American Mathematical Society
- Journal: Math. Comp. 46 (1986), 27-43
- MSC: Primary 65N30
- DOI: https://doi.org/10.1090/S0025-5718-1986-0815829-6
- MathSciNet review: 815829