NNSE618-L21a-SimWind

NNSE618-L21a-SimWind - From Sze, 1981 NNSE 618 Lecture #21a...

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NNSE 618 Lecture #21a 1 Lecture contents SimWindows Electrostatics Currents
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NNSE 618 Lecture #21a 2 1D device simulator developed Dave Winston at the University of Colorado, Boulder Usually three variables and three equations and boundary conditions are needed to solve self- consistently carrier densities and potentials It also considers the density of states in quantum wells and 1D optics (for VCSELs) Variables chosen here are: Equations are: SimWindows 2
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NNSE 618 Lecture #21a 3 Steady state rate (continuity) equations (time derivatives are zero) : Drift-diffusion currents SimWindows: currents From Sze, 1981
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NNSE 618 Lecture #21a 4 General equation for current With transmission coefficient SimWindows: thermionic and tunneling currents
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Unformatted text preview: From Sze, 1981 NNSE 618 Lecture #21a 5 Generation-recombination rates Spontaneous radiative recombination SHR (deep level) recombination Contact boundary conditions with infinite recombination rate at the contacts: the electron and hole Planck potentials retain their equilibrium values. SimWindows: current NNSE 618 Lecture #21a 6 Device file: Meshing Generation of band structure (flat bands) Simulation: state file, convergence Output: plot, info, write Applying the bias: contacts Macros Environment: Material file, iteration setup Device: Electrical models: Statistics Recombination Current: thermionic and tunneling, SimWindows: items to discuss...
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This note was uploaded on 11/08/2011 for the course NNSE 618 taught by Professor Sergeoktyabrsky during the Spring '11 term at SUNY Albany.

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NNSE618-L21a-SimWind - From Sze, 1981 NNSE 618 Lecture #21a...

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