From device geometry to JV-curve in seconds.
PERC, TOPCon, HJT, xBC, perovskite, 2T/3T tandem, space cells — with your choice of physics detail vs simplicity.
Trusted by most Tier-1 silicon cell manufacturers — and by leading research institutes and universities worldwide.
Built for full-cell, full-physics simulation.
3D solver
Solves large geometries in 3D — not just small unit cells. Capture geometric detail and edge effects without falling back on lumped approximations.
Skin concept
Decouples thin, electrically and optically active layers from the bulk solver. The reason Quokka3 is faster than generic drift-diffusion solvers.
Tandem cells
c-Si based tandems: perovskite-on-silicon, III-V on Si, two- and three-terminal configurations.
Edge recombination
Accounts for edge effects out of the box — critical for cut and shingled cells, and increasingly relevant for high-eta cells.
Bifacial cells
Front and rear illumination treated simultaneously. Suits modern bifacial cell architectures and rear-side optimisations.
Luminescence
EL and PL modelling built into the core. Compare simulations against luminescence measurements at the same fidelity.
PV-specific
JV, quantum efficiency, suns-Voc etc. — all extracted with automatic algos from the same cell definition.
Flexible detail
Trade physical detail for speed where it matters. Use a lumped skin for easy cell definition; use detailed physics when required.
Real cases, fully documented.
IBC syntax
Demonstrates Quokka3's simplified IBC syntax across four domain types, from a minimal 2D geometry to a full-cell model with edge and perimeter effects.
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3T tandem
Sets up a three-terminal tandem device with Quokka3's simplified IBC syntax and simulates top- and bottom-cell JV curves across voltage-match ratios.
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Bifacial TOPCon cell
Defines an industrial-style bifacial n-type TOPCon cell with poly-Si on lumped skins, calibrated against measured front and rear reflection/transmission.
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Longi 26.8% HJT
Models Longi's ~26.8% nanocrystalline-silicon HJT cell, calibrating the optical model to digitized figures and using the Niewelt Auger model.
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Single-junction perovskite cell
Simulates a single-junction perovskite cell with the 1D coupled ionic-electronic drift-diffusion solver, demonstrating hysteresis, ion pre-bias, and transient PL.
Read the case studyBuilt with the world's leading photovoltaic research labs.
Main scientific partner for testing and applying new functionalities.
Origin of the predecessor 'Quokka'; ongoing scientific partnership.
Hosts the free predecessor; long-term collaborator on physics models.
Download Quokka3 and start simulating today.
The standalone app is free for academic use. A license unlocks user credentials for cloud-accelerated solving — at a reduced price for academia, with commercial licensing for industry.