Setfos 5.5 - Here's what's new
Setfos is celebrating 20 years since it was first developed, and we’re happy to still be at the cutting edge of simulation. We are also celebrating our latest release, version 5.5, which was released on July 2nd, 2024.
Setfos 5.5 - What’s New
We have assembled a slide deck to unveil all the new features. But for those who prefer a quick glance, we have created a convenient bullet list below detailing our latest implementations.
Jump Straight to the Slide Deck
What’s new?
General
Hotfix update wizard
Support for installation without admin permissions (Windows)
User-Interface
Interactive curve selection in plots
Plot options to invert and normalize curves
Export of sweep plots as video or series of images
Optics
Quenching speedup
Effective medium approximation for > 2 materials
Output of refractive index profiles
Output of Mie scattering cross section
Output of the Purcell factor in Mode-Analysis simulations
Support for individual files for n and k dispersion
User-defined column assignment for nk-files
Drift-Diffusion
New trapping model: distributed traps with full dynamics, amphoteric trap states
Field and temperature dependent default capture rate for traps
Large signal analysis, Fourier postprocessing
Improved MPP approximation
Current or voltage source in steady-state precalc for Impedance
Output of individual contributions to Impedance figures
Layer specific transport type (electron-/hole-only layers)
Optimization
Normalized optimization targets
Periodic optimization targets
Individual lin/log weighting of residuum per target group
Tutorial Examples
I-V Curve Characteristics of an Amorphous-Silicon-Based Solar Cell, sec. 3.4.3, p. 142
Large signal analysis with traps, sec. 7.2.9.1, p. 315
Capacitance-voltage with large amplitude, sec. 7.2.9.2, p. 317
Modulated Electroluminescence Spectroscopy, sec. 8.6, p. 368
For a detailed overview, please refer to the new tutorial sections in the user guide.
Latest Research Enabled by Setfos
It would be remiss of us not to highlight the enabling power Setfos gives researchers, and what better way to do this than to show it in action:
Effects of Photon Recycling and Luminescent Coupling in All-Perovskite Tandem Solar Cells Assessed by Full Opto-electronic Simulation
Aeberhard, U., Zeder, S.J. and Ruhstaller, B., Sol. RRL 2400264, (2024). https://doi.org/10.1002/solr.202400264
Our team at FLUXiM investigated the performance enhancements in all-perovskite tandem solar cells resulting from photon recycling (PR) and luminescent coupling (LC).
The study employs a comprehensive computational approach, combining both optical and full opto-electronic simulations using Setfos. Optical processes are modeled using a Green function formalism to account for wave optical effects. At the same time, the full opto-electronic simulations integrate a drift-diffusion model to reflect realistic charge transport, including losses due to mobile ions and non-radiative recombination.
Key findings indicate that PR substantially impacts device performance more than LC, particularly when the tandem cells are close to current matching. LC becomes more relevant in bottom-limited configurations, and its effect is amplified by the voltage increase in the top cell due to PR. The research also identifies significant parasitic absorption in charge transport and electrode layers, which detracts from the benefits of PR and LC. Despite these losses, the overall performance improvement remains finite, suggesting that further optimization of these devices is possible.
This detailed analysis, which incorporates electrical loss channels, provides insights that enable the full opto-electronic optimization of all-perovskite tandem solar cells, enhancing their efficiency and practical applicability in the field of photovoltaics.
Ultrabright and stable top-emitting quantum-dot light-emitting diodes with negligible angular color shift
JLi, M., Li, R., Wu, L. et al., Nat Commun 15, 5161 (2024). https://doi.org/10.1038/s41467-024-49574-6
Researchers from Soochow University present the development of ultrabright, stable top-emitting quantum-dot light-emitting diodes (QLEDs) with minimal angular color shift. By optimizing the reflection penetration depths and refractive indices of the nanocrystal films, the researchers achieved devices with over 1.6 million nits luminance, 204.2 cd/A current efficiency, and a T95 operational lifetime of 15,600 hours at 1000 nits. Notable performance includes an external quantum efficiency of 29.2% without light extraction methods and a minimal color shift of Δu’v’ = 0.0052 from 0° to 60°.
How Setfos Enabled the Research:
Setfos was used for optical simulations to refine the device structure and increase its performance.
Efficient and stable hybrid perovskite-organic light-emitting diodes with external quantum efficiency exceeding 40%
Kong, L., Luo, Y., Wu, Q. et al. Light Sci Appl 13, 138 (2024). https://doi.org/10.1038/s41377-024-01500-7
Researchers from Shanghai University developed a stable, efficient, and high-color purity hybrid LED by combining perovskite LED and commercial organic LED technologies in a tandem structure. They selected LEDs with close photoluminescence peaks to maximize photon emission and minimize photon reabsorption. An efficient interconnecting layer with p-type interface doping was designed to provide good optoelectric coupling and reduce Joule heating. This resulted in a green-emitting hybrid LED with a narrow linewidth of around 30 nm, a peak luminance of over 176,000 cd/m², a maximum external quantum efficiency of over 40%, and an operational half-lifetime of over 42,000 hours. This hybrid LED demonstrates significant improvements in color purity, device performance, and stability.
SETFOS was used to simulate and quantitatively investigate the charge density, electric field, and recombination rate of the proposed devices, utilizing a drift-diffusion model.
20 Years of Research with Setfos
Setfos has significantly advanced LEDs, photovoltaics, photodetectors, and battery technology over the past 20 years. We are immensely proud that our software has enabled over 600 research papers and have driven numerous technological innovations.
Not Yet A Setfos User?
Request a free 1-month evaluation license here.
Get Hands on with Setfos and all our R&D Tools at SimOEP’24
SimOEP'24 is fast approaching, and there are still some places available.
The conference will take place from September 2- 4, 2024, at the ZHAW in Winterthur, Switzerland. The conference will bring together experts in organic electronics and photovoltaics, featuring workshops, presentations, and prototype demonstrations. If you wish to participate and haven't registered yet, be sure to secure your spot soon. For more details, visit the event page.
Setfos 5.5 Slide Deck
Setfos 5.5 is Ready to be Downloaded Now. (Existing Users)
Are you still using an older version of Setfos?
We recommend upgrading to the latest version so you can benefit from the latest features and enhanced simulation capabilities. To update to version 5.5, start Setfos and click on Help > Check for new version.
If you want to upgrade but have some concerns before doing (data loss, extra cost etc.) let us know and we will help you.