A self consistent Monte Carlo method for the transient response of laser excited photoconductors

R. P. Joshi; R. O. Grondin

doi:10.1016/0038-1101(89)90317-1

A self consistent Monte Carlo method for the transient response of laser excited photoconductors

R. P. Joshi, R. O. Grondin

Research output: Contribution to journal › Article › peer-review

Abstract

We use a bipolar Ensemble Monte Carlo embedded within a circuit solver to include the nonlinear transport of photogenerated electron-hole plasmas. All the usual carrier-carrier and carrier-phonon scattering mechanisms are included within a static screening model to incorporate non-ohmic behaviour. A one dimensional Poisson solver combines nonuniform field effects brought about by charge redistribution. Unlike previous EMC simulations for photoconductive circuits, we allow for transient changes in the net mobile charge within the photoexcitation region, by appropriately modifying the supercharge associated with each particle. Using this time varying supercharge scheme, we test an N⁺-N-N⁺ structure under both dc and transient conditions.

Original language	English (US)
Pages (from-to)	1813-1817
Number of pages	5
Journal	Solid State Electronics
Volume	32
Issue number	12
DOIs	https://doi.org/10.1016/0038-1101(89)90317-1
State	Published - Dec 1989

Keywords

Transient transport
nonideal contacts
photoconductive switching
self-consistent Monte Carlo approach
time varying supercharge

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/0038-1101(89)90317-1

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abstract = "We use a bipolar Ensemble Monte Carlo embedded within a circuit solver to include the nonlinear transport of photogenerated electron-hole plasmas. All the usual carrier-carrier and carrier-phonon scattering mechanisms are included within a static screening model to incorporate non-ohmic behaviour. A one dimensional Poisson solver combines nonuniform field effects brought about by charge redistribution. Unlike previous EMC simulations for photoconductive circuits, we allow for transient changes in the net mobile charge within the photoexcitation region, by appropriately modifying the supercharge associated with each particle. Using this time varying supercharge scheme, we test an N+-N-N+ structure under both dc and transient conditions.",

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AB - We use a bipolar Ensemble Monte Carlo embedded within a circuit solver to include the nonlinear transport of photogenerated electron-hole plasmas. All the usual carrier-carrier and carrier-phonon scattering mechanisms are included within a static screening model to incorporate non-ohmic behaviour. A one dimensional Poisson solver combines nonuniform field effects brought about by charge redistribution. Unlike previous EMC simulations for photoconductive circuits, we allow for transient changes in the net mobile charge within the photoexcitation region, by appropriately modifying the supercharge associated with each particle. Using this time varying supercharge scheme, we test an N+-N-N+ structure under both dc and transient conditions.

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KW - photoconductive switching

KW - self-consistent Monte Carlo approach

KW - time varying supercharge

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A self consistent Monte Carlo method for the transient response of laser excited photoconductors

Abstract

Keywords

ASJC Scopus subject areas

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