Sesame

Sesame solves the drift–diffusion–Poisson equations to model charge transport and optoelectronic behavior in one- and two-dimensional semiconductor devices.

Key Features:

• Drift-Diffusion-Poisson Solver: Implements a drift–diffusion–Poisson solver for simulating charge transport in optoelectronic devices such as solar cells and LEDs.
• Dimensional Flexibility: Models device architectures in one and two dimensions.
• Extended Defects: Incorporates extended defects including grain boundaries and sample surfaces into simulations.
• Parameter Space Exploration: Enables rapid exploration of system parameter spaces to evaluate parameter effects on device performance.
• Visualization of Local Transport: Produces visualizations of local charge transport properties within devices for analysis of simulation results.

Scientific Applications:

• Optoelectronic device simulation: Modeling performance and charge transport in devices such as solar cells and LEDs.
• Polycrystalline materials and interfaces: Studying the impact of defects and material interfaces in polycrystalline systems, including CdS–CdTe heterojunction thin-film solar cells.

Methodology:

Sesame numerically solves the drift–diffusion–Poisson equations to simulate charge carrier dynamics in 1D and 2D semiconductor devices and has been benchmarked against other packages.