Setfos 5.3 Released - What's New in 2023
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It has been 16 years since we launched our predictive simulation software Setfos.
In that time we have expanded its use from a simulation tool for modeling light-outcoupling in OLEDs to a comprehensive design and optimization software to predict the performance of LEDs, photodetectors, and solar cells made of organic semiconductors, perovskites, and quantum dots.
Our last major update in 2021 saw the addition of several new modules, including the groundbreaking 3D Master-Equation Model for Excitons and Position- and Time-dependent Sun-Spectrum. Since then our software team has been working hard to deliver our ambitious plans for Setfos 5.3. We are confident you are going to like them, especially if you are a Mac® user.
Setfos 5.3 Slide Deck
A Brand New Drift-Diffusion Module
Setfos 5.3 comes with an entirely new and easy-to-use Drift-Diffusion solver. Furthermore, we have switched to the HDF5 data format for the results and the GUI is now capable of showing plots for sweeps with > 1 sweep parameter.
New automatic solver modes for enhanced stability and convergence efficiency
Fully coupled Newton solver for steady-state
Automatic detection of convergence
Novel easy-to-use transient solver featuring faster computation, adaptive time-stepping, and flexible data-export
New editor for transient signals
Additional recombination models: Auger, Bimolecular, simplified SRH
Explicit output of individual recombination terms in transient
Simulation of polar layers
Small signal mode IMVS (intensity-modulated photovoltage spectroscopy)
IMPS (intensity-modulated photocurrent spectroscopy) with electrical circuit elements
User-defined amplitude for AC, IMPS, and IMVS simulations
Small signal analysis including excitons
Small signal analysis for stacks with multiple EGDM/ECDM layers
Transient AC: small signal analysis during transient simulations
Band diagram output for 2nd generation model (EGDM, ECDM)
Combination of first and second-generation mobility models
Support for electrical interface models in combination with EGDM, ECDM
Support for the combination of different electrical interface models
Simultaneous calculation of SRH and trap-trap recombination
Absorption Module
Cloud model (fraction of cloud cover) extending the time- and position-dependent sun spectrum calculation.
Setfos 5.3 now runs on macOS®
For all you mac lovers out there Setfos 5.3 can now be run on a on macOS 10.9 or newer.
Setfos 5.3 can now be run on the following operating systems:
Windows 11 (64-bit), Windows 10 (64-bit), Windows 7 (64-bit, Service Pack 1), Windows 8 (64-bit), Windows 8.1 (64-bit), Windows Vista (64-bit, Service Pack 2)
Linux (64-bit)
MacOS 10.9 or newer (Intel x86_64 or Apple Silicon)
Graphical user interface (GUI)
Graphical output of results with multiple sweep-dimensions
Sweep the slider to browse multidimensional simulation results
Plot-option to add a user-defined axis offset
Indication of simulation progress in Windows task bar
Setfos 5.3 is ready to be downloaded now.
To get the newest version, start Setfos and click on Help > Check for new version.
For those of you who have yet to experience the predictive power of Setfos,
Setfos in action: New Research Papers
Efficient and stable one-micrometer-thick organic light-emitting diodes
Guanhao Liu, Zhiyi Li, Xiaoxiao Hu, Yuanyuan Qin, Chun-Sing Lee, Dongqi Chen, Lingxue Wang, Jianjun Liu, Pengfei Wang, Yong-Jin Pu & Ying Wang
Nature Photonics., 16, 876, (2022).
https://doi.org/10.1038/s41566-022-01084-x
Organic light-emitting diodes (OLEDs) with thick carrier transport layers are desirable for high production yields of OLED-based displays and lighting. However, high operating voltages are inevitable. The research team of Professor Ying Wang of the Chinese Academy of Sciences demonstrates highly efficient and stable OLEDs with thicknesses of over 1 μm and low operating voltages.
The OLEDs use MoO3/SimCP2 as a hole-injection layer and a thick layer of 4,4′-(cyclohexane-1,1-diyl)bis(N,N-di-p-tolylaniline) (TAPC) as a hole-transporting layer. They found that Ohmic hole injection can only be formed for TAPC layers with thicknesses of over 900 nm. In this configuration, they achieve external quantum efficiencies of 23.09%, 22.19%, and 7.39%, and operating voltages of 5.11 V, 3.55 V, and 6.88 V at 1,000 cd cm–2 for red, green, and blue OLEDs, respectively. The red, green, and blue OLEDs maintained the above-mentioned performances while also featuring excellent extrapolated LT95 operational lifetimes of around 55,000 h, 18,000 h, and 1,600 h, respectively, at an initial luminance of 1,000 cd cm–2. This work paves the way for large-area OLED-based displays and lighting with high production yields.
The p-polarized emitted light fittings were performed with Setfos.
Charge-Carrier Dynamics and Exciton-Polaron Quenching Studied Using Simultaneous Observations of Displacement Current and Photoluminescence Intensity
Yutaka Noguchi, Kaito Ninomiya, and Katsuya Sato
The Journal of Physical Chemistry C, 126, 18520 (2022)
https://pubs.acs.org/doi/10.1021/acs.jpcc.2c05871
This work proposes a simple but powerful technique to investigate the correlations between the dynamics of charge carriers and excitons in an OLED. This technique (DCM-PL) is based on displacement current measurement (DCM) with the simultaneous observation of the photoluminescence (PL) intensity.
By applying this technique to metal−insulator−semiconductor (MIS) structures with a partial stack of an OLED based on tris(2-phenylpyridine)iridium(III) [Ir(ppy)3], the authors were able to investigate the hole accumulation behavior in the device and the corresponding PL losses due to exciton-polaron quenching (EPQ). Remarkably, the DCM-PL characteristics revealed that the polarity of the host material in the emission layer modifies the charge carrier dynamics and EPQ properties. Since EPQ is a key process involved in efficiency roll-off and device degradation, these results contribute to the optimization of the OLED performances.
The DCM curves for the CBP and TPBi host devices were calculated using Setfos.
Tailoring the Nature of Interface States in Efficient and Stable Bilayer Organic Solar Cells by a Transfer-Printing Technique
Rong Wang, Youyu Jiang, Wolfgang Gruber, Yakun He, Mingjian Wu, Paul Weitz, Kaicheng Zhang et al.
Adv. Mat. Interf. 9, 2200342, (2022)
https://onlinelibrary.wiley.com/doi/full/10.1002/admi.202200342
Now, there are bilayer organic solar cells (BL-OSCs) that perform like bulk-heterojunctions (BHJ-OSCs), but with longer stability. This is possible by orienting the polymer donor (PM6) with DIO-additive.
This was a recent finding from the group of Prof. Christoph Brabec at the i-MEET. The researchers developed an innovative dry-transfer deposition method called spreading transfer printing (STP). The ordering of PM6 on the BL-OSC resulted in a higher Voc, higher Jsc, and reduced charge recombination compared to the BHJ.
A drift-diffusion simulation with the software setfos combined with the experiments, allowed them to determine the impact of the charge orientation on charge generation and device efficiency.
Setfos Tutorial Videos
If you are new to Setfos the tutorial videos below by Dr. Urs Aeberhard should be of interest to you:
