This work introduces a new software package `Sesame for the numerical computation of classical semiconductor equations. It supports 1 and 2-dimensional systems and provides tools to easily implement extended defects such as grain boundaries or sample surfaces. Sesame has been designed to facilitate fast exploration of the system parameter space and to visualize local charge transport properties. Sesame is distributed as a Python package or as a standalone GUI application, and is available at https://pages.nist.gov/sesame/ .
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