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Sesame: A Numerical Simulation Tool for Polycrystalline Photovoltaics



Benoit H. Gaury, Yubo Sun, Peter Bermel, Paul M. Haney


We present a new software simulation tool "Sesame", which solves the drift-diffusion-Poisson equations in 1 and 2-dimensions. Sesame is distributed both as an open source Python package and as a standalone executable for Windows. The software is designed to enable easy construction of systems with extended defects such as grain boundaries and sample surfaces. In this paper, we present an overview of Sesame's capabilities along with results benchmarking Sesame against commercial software packages. The source code, executable, and full documentation with tutorials is available at
Proceedings Title
45th IEEE Photovoltaic Specialists Conference
Conference Dates
June 11-15, 2018
Conference Location
Waikoloa, HI, US
Conference Title
45th IEEE Photovoltaic Specialists Conference (7th World Conference on Photovoltaic Energy


photovoltaics, simulation, software


Gaury, B. , Sun, Y. , Bermel, P. and Haney, P. (2018), Sesame: A Numerical Simulation Tool for Polycrystalline Photovoltaics, 45th IEEE Photovoltaic Specialists Conference, Waikoloa, HI, US, [online],, (Accessed June 15, 2024)


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Created June 10, 2018, Updated October 12, 2021