Dr. Evelyne Knapp

Projects

• The only certainty is uncertainty: Uncertainty quantification in ML Prediction / Project leader / completed
• Advanced Imaging and Machine Learning for PV Quality Assurance / Project leader / completed
• Detailed building energy evaluation from large-area 3D thermography supporting a profitable energy future / Team member / completed
• Enhanced blood flow and pressure measurements with PhysioCath-microcatheter for reliable diagnosis of 'Ischemia with Non-Obstructive Coronary Artery' (INOCA) / Deputy project leader / completed

Publications

Articles in scientific journal, peer-reviewed

• Zbinden, O., Comi, E. L., Knapp, E., & Tress, W. (2025). Autoencoder for parameter estimation and current-voltage curve simulation of perovskite solar cells. Npj Computational Materials. https://doi.org/10.1038/s41524-025-01875-0
• Zbinden, O., Knapp, E., & Tress, W. (2024). Identifying performance limiting parameters in perovskite solar cells using machine learning. Solar RRL, 8(6), 2300999. https://doi.org/10.1002/solr.202300999
• Torre Cachafeiro, M. A., Comi, E., Parayil Shaji, S., Narbey, S., Jenatsch, S., Knapp, E., & Tress, W. (2024). Ion migration in mesoscopic perovskite solar cells : effects on electroluminescence, open circuit voltage, and photovoltaic quantum efficiency. Advanced Energy Materials, 15(5), 2403850. https://doi.org/10.1002/aenm.202403850
• Battaglia, M., Comi, E., Stadelmann, T., Hiestand, R., Ruhstaller, B., & Knapp, E. (2023). Deep ensemble inverse model for image-based estimation of solar cell parameters. APL Machine Learning, 1(3), 36108. https://doi.org/10.1063/5.0139707
• Comi, E., Knapp, E., Weidmann, S., Kirsch, C., Jenatsch, S., Hiestand, R., & Ruhstaller, B. (2021). Sinusoidal small-signal (AC) and steady-state (DC) analysis of large-area solar cells. Solar Energy Advances, 1(100003). https://doi.org/10.1016/j.seja.2021.100003
• Diethelm, M., Schiller, A., Kawecki, M., Devižis, A., Blülle, B., Jenatsch, S., Knapp, E., Grossmann, Q., Ruhstaller, B., Nüesch, F., & Hany, R. (2019). The dynamic emission zone in sandwich polymer light‐emitting electrochemical cells. Advanced Functional Materials, 2019(1906803). https://doi.org/10.1002/adfm.201906803
• Neukom, M. T., Schiller, A., Züfle, S., Knapp, E., Ávila, J., Pérez-del-Rey, D., Dreessen, C., Zanoni, K. P. S., Sessolo, M., Bolink, H. J., & Ruhstaller, B. (2019). Consistent device simulation model describing perovskite solar cells in steady-state, transient, and frequency domain. ACS Applied Materials & Interfaces, 11(26), 23320–23328. https://doi.org/10.1021/acsami.9b04991
• Altazin, S., Kirsch, C., Knapp, E., Stous, A., & Ruhstaller, B. (2018). Refined drift-diffusion model for the simulation of charge transport across layer interfaces in organic semiconductor devices. Journal of Applied Physics, 124(13), 135501. https://doi.org/10.1063/1.5043245
• Jenatsch, S., Altazin, S., Will, P. A., Neukom, M. T., Knapp, E., Züfle, S., Lenk, S., Reineke, S., & Ruhstaller, B. (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). https://doi.org/10.1063/1.5044494
• Monnier, C. A., Crippa, F., Geers, C., Knapp, E., Rothen-Rutishauser, B., Bonmarin, M., Lattuada, M., & Petri-Fink, A. (2017). Lock-In thermography as an analytical tool for magnetic nanoparticles: measuring heating power and magnetic fields. The Journal of Physical Chemistry C, 121(48), 27164–27175. https://doi.org/10.1021/acs.jpcc.7b09094
• Neukom, M., Züfle, S., Knapp, E., Makha, M., Hany, R., & Ruhstaller, B. (2017). Why perovskite solar cells with high efficiency show small IV-curve hysteresis. Solar Energy Materials & Solar Cells, 169, 159–166. https://doi.org/10.1016/j.solmat.2017.05.021
• Altazin, S., Züfle, S., Knapp, E., Kirsch, C., Schmidt, T. D., Jäger, L., Noguchi, Y., Brütting, W., & Ruhstaller, B. (2016). Simulation of OLEDs with a polar electron transport layer. Organic Electronics, 39, 244–249. https://doi.org/10.1016/j.orgel.2016.10.014
• Knapp, E., & Ruhstaller, B. (2015). Analysis of negative capacitance and self-heating in organic semiconductor devices. Journal of Applied Physics, 117(13). https://doi.org/10.1063/1.4916981
• Knapp, E., & Ruhstaller, B. (2012). The role of shallow traps in dynamic characterization of organic semiconductor devices. Journal of Applied Physics, 112(2). https://doi.org/10.1063/1.4739303
• Knapp, E., & Ruhstaller, B. (2011). Numerical impedance analysis for organic semiconductors with exponential distribution of localized states. Applied Physics Letters, 99(9). https://doi.org/10.1063/1.3633109
• Knapp, E., & Ruhstaller, B. (2011). Numerical analysis of steady-state and transient charge transport in organic semiconductor devices. Optical and Quantum Electronics, 42(11–13), 667–677. https://doi.org/10.1007/s11082-011-9443-1
• Knapp, E., Häusermann, R., Schwarzenbach, H., & Ruhstaller, B. (2010). Numerical simulation of charge transport in disordered organic semiconductor devices. Journal of Applied Physics, 108(5), 054504–054501. https://doi.org/10.1063/1.3475505
• Häusermann, R., Knapp, E., Moos, M., Reinke, N. A., Flatz, T., & Ruhstaller, B. (2009). Coupled opto-electronic simulation of organic bulk-heterojunction solar cells : parameter extraction and sensitivity analysis. Journal of Applied Physics, 106(10), 104507. https://doi.org/10.1063/1.3259367

Written conference contributions, peer-reviewed

• Comi, E., Knapp, E., Battaglia, M., Kirsch, C., Weidmann, S., Jenatsch, S., Hiestand, R., Bonmarin, M., & Ruhstaller, B. (2022). Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells [Conference paper]. EU PVSEC Proceedings, 241–246. https://doi.org/10.4229/WCPEC-82022-2BO.8.3
• Knapp, E., Battaglia, M., Stadelmann, T., Jenatsch, S., & Ruhstaller, B. (2021). XGBoost trained on synthetic data to extract material parameters of organic semiconductors [Conference paper]. Proceedings of the 8th SDS, 46–51. https://doi.org/10.1109/SDS51136.2021.00015
• Aeberhard, U., Neukom, M. T., Schiller, A., Zuefle, S., Jenatsch, S., Blülle, B., Altazin, S., Stepanova, L., Knapp, E., Kirsch, C., & Ruhstaller, B. (2020). Computational device optimization and parameter extraction for perovskite-based solar cells [Conference paper]. In A. Freundlich, M. Sugiyama, & S. Collin (Eds.), Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX (p. 112750B). SPIE. https://doi.org/10.1117/12.2545507
• Aeberhard, U., Altazin, S., Stepanova, L., Stous, A., Blulle, B., Kirsch, C., Knapp, E., & Ruhstaller, B. (2019). Numerical optimization of organic and hybrid multijunction solar cells [Conference paper]. 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 0105–0111. https://doi.org/10.1109/PVSC40753.2019.8980824
• Knapp, E., & Ruhstaller, B. (2015). Analysis of self-heating and negative capacitance in organic semiconductors devices [Conference paper]. International Symposium of the Society for Information Display (SID), San Jose, USA, 21 May - 5 June 2015, 46, 778–781. https://doi.org/10.1002/sdtp.10224
• Altazin, S., Perucco, B., Pagan, N., Lapagna, K., Lanz, T., Knaack, R., Knapp, E., & Ruhstaller, B. (2013). Multi-scale modeling of organic light-emitting devices [Conference paper]. SID International Symposium: Digest of Technical Papers, 44, 1486–1489. https://doi.org/10.1002/j.2168-0159.2013.tb06529.x

Other publications

• Diethelm, M., Grossmann, Q., Schiller, A., Knapp, E., Jenatsch, S., Kawecki, M., Nüesch, F., & Hany, R. (2018). Optimized electrolyte loading and active film thickness for sandwich polymer light-emitting electrochemical cells. Advanced Optical Materials, 7(3). https://doi.org/10.1002/adom.201801278
• Altazin, S., Züfle, S., Knapp, E., Kirsch, C., Schmidt, T. D., Jäger, L., Brütting, W., & Ruhstaller, B. (2016). On the role of polar molecules and the barrier for charge injection in OLEDs [Conference paper]. In F. So, C. Adachi, & J.-J. Kim (Eds.), Proceedings of SPIE (Vol. 9941). https://doi.org/10.1117/12.2238620
• Altazin, S., Züfle, S., Knapp, E., Kirsch, C., Schmidt, T. D., Jäger, L., Brütting, W., & Ruhstaller, B. (2016). Combining simulators and experiments to study the impact of polar OLED materials [Conference paper]. SID Symposium Digest of Technical Papers, 47, 1750–1753. https://doi.org/10.1002/sdtp.11059
• Knapp, E., & Ruhstaller, B. (2015). Analysis of self-heating and trapping in organic semiconductor devices [Conference paper]. In F. So, C. Adachi, & J.-J. Kim (Eds.), Organic Light Emitting Materials and Devices XIX (Vol. 9566). SPIE. https://doi.org/10.1117/12.2185712

Oral conference contributions and abstracts

• Jenatsch, S., Aeberhard, U., Comi, E. L., Moia, D., Diethelm, M., van den Heuvel, R., Mossig, N., Knapp, E., & Ruhstaller, B. (2025, July 21). Assessing the origins and impacts of inhomogeneities in perovskite solar cells by imaging techniques and device simulations. Proceedings of the MATSUS Fall 2025 Conference. https://doi.org/10.29363/nanoge.matsusfall.2025.213
• Braga, D., Comi, E. L., Knapp, E., Jenatsch, S., Battaglia, M., Torre, M., Kirsch, C., & Ruhstaller, B. (2025, February 17). Investigating inhomogeneities and turn-on dynamics in carbon-based perovskite solar cells using advanced imaging and simulation techniques. Proceedings of the International Conference on Hybrid and Organic Photovoltaics. https://doi.org/10.29363/nanoge.hopv.2025.025
• Zbinden, O., Knapp, E., & Tress, W. (2024). Machine learning for surpassing limits in perovskite solar cells [Conference presentation]. International Conference on Simulation of Organic Electronics and Photovoltaics 2024, 34. https://www.zhaw.ch/storage/engineering/institute-zentren/icp/veranstaltungen/simoep-2024/boa-simoep-24-v-august30.pdf
• Comi, E., Jenatsch, S., Blülle, B., Battaglia, M., Torre Cachafeiro, M. A., Kirsch, C., Hiestand, R., Aeberhard, U., Ruhstaller, B., & Knapp, E. (2023). Investigation of time and location dependent variations in electroluminescence images of perovskite solar cells [Conference presentation]. Proceedings of the 40th European Photovoltaic Solar Energy Conference and Exhibition, 020077–020001.

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