OghmaNano
Simulate organic/Perovskite Solar Cells, OFETs, and OLEDs
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Fitting the Model to Experimental Data
Fitting the model to experimental data
to extract recombination and mobility.
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OghmaNano’s fitting tools allow you to connect simulations directly to your measurements — transforming raw experimental data into meaningful physical parameters.
By fitting the model to steady-state or transient measurements, you can extract quantities such as charge carrier mobility, recombination coefficients, trap densities, and energetic disorder parameters.
The optimisation framework supports multi-parameter fitting, allowing several physical parameters to be extracted simultaneously.
These algorithms work with drift–diffusion models, circuit-level models, or any other supported physical model in OghmaNano — giving you a unified fitting workflow across different simulation domains.
Key Features:
- Multi-parameter extraction — fit several physical constants at once, such as mobility, recombination constants, trap density, and more.
- Easy-to-use interface for importing experimental data from
.txt, .csv, or .dat files.
- Fast, robust optimisation using the downhill simplex (Nelder–Mead) algorithm for reliable convergence without needing derivatives.
- Fit to steady-state (e.g., JV curves, Suns–Voc) or time-domain (e.g., TPV, TPC, CELIV) datasets.
- Real-time visualisation — watch simulated curves evolve as the fit progresses, allowing instant feedback on convergence.
- Multi-dataset global fitting — fit multiple measurements from the same device simultaneously to extract a single, self-consistent set of physical parameters.
- Parameter constraints — fix known values or set realistic bounds to guide fitting and avoid unphysical results.
- Export fitted parameters and final simulated curves for reporting or further analysis.
By combining experimental data with physics-based modelling, OghmaNano enables researchers to close the loop between measurement and simulation — leading to deeper insights, more accurate models, and faster device optimisation.
