Prof. Dr. Beat Ruhstaller

Arbeit an der ZHAW

Tätigkeit

Leiter Schwerpunkt Organische Elektronik und Photovoltaik

Netzwerk

Mitglied in Netzwerken

• Swiss Research Platform in Photovoltaics
• Swiss National Laboratory for Solid State Lighting
• Google Scholar (Up-to-date Publication List and Citation Index)

Projekte

• Packaging technology, stability evaluation, and non-destructive testing for commercialization of perovskite solar modules / Stellv. Projektleiter:in / laufend
• Rationally Designed Thin Contact Layers enabling Large-Scale Perovskite-on-Silicon Tandem Photovoltaics / Co-Projektleiter:in / laufend
• Modellierung und Charakterisierung von neuartigen optoelektronischen Bauelementen / Stellv. Projektleiter:in / laufend
• Fabrication of single crystal perovskite memristor / Projektleiter:in / abgeschlossen
• Advanced Materials and Characterization Tools for Quantum-Dot enhanced Displays / Stellv. Projektleiter:in / abgeschlossen
• LED-basierte Wasseraufbereitung / Co-Projektleiter:in / abgeschlossen
• In-Mold Electronics-Project for OLED-Integration in plastics / Stellv. Projektleiter:in / abgeschlossen
• PV2050: Simulation and Characterization / Stellv. Projektleiter:in / abgeschlossen

Publikationen

Beiträge in wissenschaftlicher Zeitschrift, peer-reviewed

• Stanzani, E. et al. (2026) 'Enhancing the efficiency of ultrathin-EML OLEDs via a double-emitter configuration', ACS Applied Electronic Materials, 8(13), pp. 5252–5260. doi: 10.1021/acsaelm.6c00271.
• Zeder, S. J. et al. (2025) 'Impact of luminescent coupling on perovskite‐silicon tandem external quantum efficiency quantified by comprehensive opto‐electronic simulation', Solar RRL, 9(24), p. e202500823. doi: 10.1002/solr.202500823.
• Torre Cachafeiro, M. A. et al. (2025) 'Visualising ionic screening in perovskite solar cells : a bumpy ride along the J-V curve', EES Solar, 1(5), pp. 762–774. doi: 10.1039/d5el00133a.
• Zeder, S. J. et al. (2025) 'Optimizing perovskite LEDs and tandem PV cells : the role of photon-recycling and luminescent coupling in presence of strong light scattering', APL Energy, 3(2), p. 026110. doi: 10.1063/5.0268284.
• Kissling, G. P., Ruhstaller, B. and Pernstich, K. P. (2023) 'Measuring frontier orbital energy levels of OLED materials using cyclic voltammetry in solution', Organic Electronics, 122(106888). doi: 10.1016/j.orgel.2023.106888.
• Zeder, S. et al. (2020) 'Coupled 3D master equation and 1D drift‐diffusion approach for advanced OLED modeling', Journal of the Society for Information Display, 28(5), pp. 440–449. doi: 10.1002/jsid.903.
• Jagielski, J. et al. (2020) 'Scalable photonic sources using two-dimensional lead halide perovskite superlattices', Nature Communications, 11(1). doi: 10.1038/s41467-019-14084-3.
• Hofmann, A. J. L. et al. (2019) 'Dipolar doping of organic semiconductors to enhance carrier injection', Physical Review Applied, 12(6), p. 064052. doi: 10.1103/PhysRevApplied.12.064052.
• Diethelm, M. et al. (2019) 'The dynamic emission zone in sandwich polymer light‐emitting electrochemical cells', Advanced Functional Materials, 30(33), p. 1906803. doi: 10.1002/adfm.201906803.
• Regnat, M., Pernstich, K. and Ruhstaller, B. (2019) 'Influence of the bias-dependent emission zone on exciton quenching and OLED efficiency', Organic Electronics, 70, pp. 219–226. doi: 10.1016/j.orgel.2019.04.027.
• Neukom, M. T. et al. (2019) 'Consistent device simulation model describing perovskite solar cells in steady-state, transient, and frequency domain', ACS Applied Materials & Interfaces, 11(26), pp. 23320–23328. doi: 10.1021/acsami.9b04991.
• Jenatsch, S. et al. (2018) 'Quantitative analysis of charge transport in intrinsic and doped organic semiconductors combining steady-state and frequency-domain data', Journal of Applied Physics, 124(105501). doi: 10.1063/1.5044494.
• Diethelm, M. et al. (2018) 'Quantitative analysis of pixel crosstalk in AMOLED displays', Journal of Information Display, 19(2), pp. 61–69. doi: 10.1080/15980316.2018.1428232.
• Wang, L. et al. (2018) 'Organic salt semiconductor with high photoconductivity and long carrier lifetime', Advanced Functional Materials, 28(16), p. 1705724. doi: 10.1002/adfm.201705724.
• Altazin, S. et al. (2018) 'Refined drift-diffusion model for the simulation of charge transport across layer interfaces in organic semiconductor devices', Journal of Applied Physics, 124(13), p. 135501. doi: 10.1063/1.5043245.
• Regnat, M. et al. (2018) 'Analysis of the bias-dependent split emission zone in phosphorescent OLEDs', ACS Applied Materials & Interfaces, 10(37), pp. 31552–31559. doi: 10.1021/acsami.8b09595.
• Neukom, M. et al. (2017) 'Why perovskite solar cells with high efficiency show small IV-curve hysteresis', Solar Energy Materials & Solar Cells, 169, pp. 159–166. doi: 10.1016/j.solmat.2017.05.021.
• Züfle, S. et al. (2015) 'An effective area approach to model lateral degradation in organic solar cells', Advanced Energy Materials, 5(20). doi: 10.1002/aenm.201500835.
• Jenatsch, S. et al. (2015) 'Influence of chemically p-type doped active organic semiconductor on the film thickness versus performance trend in cyanine/C60 bilayer solar cells', Science and Technology of Advanced Materials, 16(3). doi: 10.1088/1468-6996/16/3/035003.
• Jenatsch, S. et al. (2014) 'Influence of molybdenum oxide interface solvent sensitivity on charge trapping in bilayer cyanine solar cells', The Journal of Physical Chemistry C, 118(30), pp. 17036–17045. doi: 10.1021/jp5005314.
• Neukom, M. T., Züfle, S. and Ruhstaller, B. (2012) 'Reliable extraction of organic solar cell parameters by combining steady-state and transient techniques', Organic Electronics, 13(12), pp. 2910–2916. doi: 10.1016/j.orgel.2012.09.008.
• Knapp, E. and Ruhstaller, B. (2012) 'The role of shallow traps in dynamic characterization of organic semiconductor devices', Journal of Applied Physics, 112(2). doi: 10.1063/1.4739303.
• Lanz, T. et al. (2011) 'Extended light scattering model incorporating coherence for thin-film silicon solar cells', Journal of Applied Physics, 110(3). doi: 10.1063/1.3622328.
• Leger, J. M., Carter, S. A. and Ruhstaller, B. (2005) 'Recombination profiles in poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] light-emitting electrochemical cells', Journal of Applied Physics, 98(12). doi: 10.1063/1.2149162.
• Leger, J. M. et al. (2003) 'Thickness-dependent changes in the optical properties of PPV- and PF-based polymer light emitting diodes', Physical Review B, 68(5). doi: 10.1103/PhysRevB.68.054209.
• Ruhstaller, B. et al. (2000) 'Bias-tuned reduction of self-absorption in polymer blend electroluminescence', Chemical Physics Letters, 317(3-5), pp. 238–244. doi: 10.1016/S0009-2614(99)01390-1.
• Bliznyuk, V. N. et al. (1999) 'Self-assembled nanocomposite polymer light-emitting diodes with improved efficiency and luminance', Advanced Materials, 11(15), pp. 1257–1261. doi: 10.1002/(SICI)1521-4095(199910)11:15<1257::AID-ADMA1257>3.0.CO;2-D.

Buchbeiträge, peer-reviewed

Altazin, S., Penninck, L. and Ruhstaller, B. (2018) 'Outcoupling technologies : concepts, simulation, and implementation', in Handbook of organic light-emitting diodes. Tokyo: Springer, pp. 1–22. doi: 10.1007/978-4-431-55761-6_21-1.

Schriftliche Konferenzbeiträge, peer-reviewed

• Krucker, T. et al. (2025) 'The influence of SAMs on the performance and stability of perovskite solar cells'.
• Georgakopoulos-Paltidis, V. et al. (2025) 'Numerical analysis of trap‐induced negative capacitance in organic light‐emitting diodes', in SID Symposium Digest of Technical Papers. Wiley, pp. 638–641. doi: 10.1002/sdtp.18889.
• Stanzani, E. et al. (2024) 'Comprehensive exploration of exciton quenching in OLEDs through combined characterization and computational simulation', in SID Symposium Digest of Technical Papers. Wiley, pp. 401–404. doi: 10.1002/sdtp.17093.
• Zeder, S. J., Ruhstaller, B. and Aeberhard, U. (2023) 'Modeling the impact of light scattering on photon recycling in solar cells and LEDs', in 2023 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD). IEEE, pp. 17–18. doi: 10.1109/nusod59562.2023.10273450.
• Sem, S. et al. (2022) 'Estimating non‐radiative decay rates in TADF emitters using steady‐state and transient optical data', in SID Symposium Digest of Technical Papers. Wiley, pp. 1495–1498. doi: 10.1002/sdtp.15802.
• Aeberhard, U. et al. (2022) 'Effects of self‐absorption and photon recycling in metal‐halide Perovskite LEDs assessed by full opto‐electronic device simulation', in SID Symposium Digest of Technical Papers. Wiley, pp. 1365–1368. doi: 10.1002/sdtp.15766.
• Aeberhard, U., Zeder, S. and Ruhstaller, B. (2021) 'Rigorous simulation of photon recycling effects in perovskite solar cells and LEDs', in 2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD). IEEE, pp. 63–64. doi: 10.1109/NUSOD52207.2021.9541505.
• Aeberhard, U., Zeder, S. J. and Ruhstaller, B. (2021) 'Photon recycling in perovskite solar cells assessed by a detailed-balance compatible dipole emission model', in 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC). IEEE, pp. 0278–0282. doi: 10.1109/PVSC43889.2021.9518720.
• Regnat, M. et al. (2021) 'Detailed explanation of the increased driving voltage in a TADF exciplex host OLED during prolonged operation via a quantitative device model', in 13th Asian Conference on Organic Electronics (A-COE 2021), Online, 2-4 September 2021.
• Knapp, E. et al. (2021) 'XGBoost trained on synthetic data to extract material parameters of organic semiconductors', in Proceedings of the 8th SDS. IEEE, pp. 46–51. doi: 10.1109/SDS51136.2021.00015.
• Häusermann, R. et al. (2021) 'Optimizing charge transport and reducing excitonic loss channels in fluorescent doped TADF OLEDs', in SID International Symposium : Digest of Technical Papers. Wiley, pp. 341–344. doi: 10.1002/sdtp.14686.
• Jenatsch, S. et al. (2021) 'Combining steady‐state, frequency, and time domain data for a comprehensive analysis of multilayer TADF OLEDs', in SID International Symposium : Digest of Technical Papers. Wiley, pp. 299–302. doi: 10.1002/sdtp.14470.
• Aeberhard, U. et al. (2020) 'Computational device optimization and parameter extraction for perovskite-based solar cells', in Freundlich, A., Sugiyama, M., and Collin, S. (eds) Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX. SPIE, p. 112750B. doi: 10.1117/12.2545507.
• Aeberhard, U. et al. (2019) 'Numerical optimization of organic and hybrid multijunction solar cells', in 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC). IEEE, pp. 0105–0111. doi: 10.1109/PVSC40753.2019.8980824.
• Blülle, B. et al. (2019) 'Light conversion and scattering properties of QD films for display applications : angle‐resolved optical spectroscopy and numerical simulation', in SID International Symposium : Digest of Technical Papers. Wiley. doi: 10.1002/sdtp.13512.
• Altazin, S. et al. (2015) 'Simulations, measurements and optimization of OLEDs with scattering layer', in SID international symposium : digest of technical papers. Wiley, pp. 564–567. doi: 10.1002/sdtp.10478.
• Altazin, S. et al. (2014) 'Design tool for light scattering enhancement in OLEDs', in Digest of Technical Papers. Wiley, pp. 576–579. doi: 10.1002/j.2168-0159.2014.tb00151.x.
• Lanz, T. et al. (2014) 'Failure modes in all-plastic encapsulated flexible organic solar modules : experimental and computational analysis', in Graetzel, M. and Nazeeruddin, M. (eds) Proceedings of the 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14). nanoGe.
• Altazin, S. et al. (2013) 'Multi-scale modeling of organic light-emitting devices', in SID International Symposium: Digest of Technical Papers. Wiley, pp. 1486–1489. doi: 10.1002/j.2168-0159.2013.tb06529.x.

Weitere Publikationen

• Zeder, S. et al. (2023) 'Photon recycling in metal halide perovskites : its modeling and relevance to optoelectronic devices', in Martínez-Pastor, J. P., Boix, P. P., and Xing, G. (eds) Metal Halide Perovskites for Generation, Manipulation and Detection of Light. Amsterdam: Elsevier, pp. 507–545. doi: 10.1016/B978-0-323-91661-5.00001-5.
• Aeberhard, U., Hiestand, R. and Ruhstaller, B. (2020) 'Simulation of beam shaping by micro‐textures for curved displays', in SID International Symposium : Digest of Technical Papers. Wiley, pp. 957–959. doi: 10.1002/sdtp.14030.
• Losio, P. A. et al. (2016) 'Evolutionary optimization of TCO/mesh electrical contacts in CIGS solar cells', in Proceedings of the EU PVSEC 2016 (Munich). WIP Wirtschaft und Infrastruktur, pp. 1237–1240. doi: 10.21256/zhaw-1987.
• Altazin, S. et al. (2013) 'Impact of light scattering for efficiency enhancement in organic solar cells', in 28th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), Paris, France, 30 September - 4 October 2013. WIP. doi: 10.21256/zhaw-1994.
• Ruhstaller, B. et al. (2006) 'Optoelectronic OLED modeling for characterization and optimization', in Organic Electronics Conference and Exhibition, Frankfurt, Germany, 25-27 September 2006.
• Ruhstaller, B. and Schwarzenbach, H. U. (2004) 'Virtuelle Experimente für die Ingenieurausbildung', ZHWInfo, 19, p. 45.
• Hocker, T. et al. (2003) 'Mikro- und Nanotechnologie am Center for Computational Physics', ZHWInfo, 17.
• Ruhstaller, B. et al. (2003) 'Simulating electronic and optical processes in multilayer organic light-emitting devices', IEEE Journal of Selected Topics in Quantum Electronics, 9(3), pp. 723–731. doi: 10.1109/JSTQE.2003.818852.

Mündliche Konferenzbeiträge und Abstracts

• Jenatsch, S. et al. (2025) 'Assessing the origins and impacts of inhomogeneities in perovskite solar cells by imaging techniques and device simulations', in Proceedings of the MATSUS Fall 2025 Conference. Fundació de la comunitat valenciana SCITO. doi: 10.29363/nanoge.matsusfall.2025.213.
• Torre Cachafeiro, M. et al. (2025) 'Ionic screening and its impact on J-V curves in carbon-based perovskite solar cells', in Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO25). Fundació de la comunitat valenciana SCITO. doi: 10.29363/nanoge.nipho.2025.004.
• Braga, D. et al. (2025) 'Investigating inhomogeneities and turn-on dynamics in carbon-based perovskite solar cells using advanced imaging and simulation techniques', in Proceedings of the International Conference on Hybrid and Organic Photovoltaics. Fundació de la comunitat valenciana SCITO. doi: 10.29363/nanoge.hopv.2025.025.
• Schiller, A. et al. (2024) 'Assessing the influence of illumination on ion conductivity in perovskite solar cells', in Proceedings of the MATSUS Spring 2025 Conference. Fundació de la comunitat valenciana SCITO. doi: 10.29363/nanoge.matsusspring.2025.418.
• Knapp, E. et al. (2023) 'Spatial mapping of transient electroluminescence in perovskite solar cells', in Proceedings of Device Physics Characterization and Interpretation in Perovskite and Organic Materials (DEPERO). València: Fundació de la comunitat valenciana SCITO. doi: 10.29363/nanoge.depero.2023.031.
• Jenatsch, S. et al. (2023) 'Electro-optical characterization and device simulations of perovskite solar cells', in Proceedings of Device Physics Characterization and Interpretation in Perovskite and Organic Materials (DEPERO). València: Fundació de la comunitat valenciana SCITO. doi: 10.29363/nanoge.depero.2023.003.
• Lanz, T. et al. (2013) 'Light harvesting analysis of novel thin-film electrode architectures in microcrystalline silicon solar cells with hybrid Fourier and geometrical optics simulator', in European Materials Research Society (E-MRS) 2013 Spring Meeting, Strasbourg, France, 27-31 May 2013.

Zurück