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Simudo: a device model for intermediate band materials

  • Eduard C. Dumitrescu
  • Matthew M. Wilkins
  • Jacob J. KrichEmail author
Article
  • 38 Downloads

Abstract

We describe Simudo, a free Poisson/drift-diffusion steady state device model for semiconductor and intermediate band materials, including self-consistent optical absorption and generation. Simudo is the first freely available device model that can treat intermediate band materials. Simudo uses the finite element method (FEM) to solve the coupled nonlinear partial differential equations in two dimensions, which is different from the standard choice of the finite volume method in essentially all commercial semiconductor device models. We present the continuous equations that Simudo solves, show the FEM formulations we have developed, and demonstrate how they allow robust convergence with double-precision floating point arithmetic. With a benchmark semiconductor pn junction device, we show that Simudo has a higher rate of convergence than Synopsys Sentaurus, converging to high accuracy with a considerably smaller mesh. Simudo includes many semiconductor phenomena and parameters and is designed for extensibility by the user to include many physical processes.

Keywords

Device model Intermediate band materials Optoelectronics Finite element method Photovoltaics 

Notes

Acknowledgements

We acknowledge funding from US Army Research Laboratory (W911NF-16-2-0167), the Natural Sciences and Engineering Research Council of Canada TOP-SET training program, and computing resources from Compute Canada. We thank Emily Zinnia Zhang for alpha testing Simudo, contributing the first code implementing trapping processes, and valuable conversations.

Supplementary material

10825_2019_1414_MOESM1_ESM.pdf (78 kb)
Supplementary material 1 (PDF 78 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of OttawaOttawaCanada
  2. 2.School of Electrical Engineering and Computer ScienceUniversity of OttawaOttawaCanada

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