Prof. Dr. Beat Ruhstaller

ZHAW School of Engineering
Forschungsschwerpunkt Organic Electronics & Photovoltaics
Technikumstrasse 71
8400 Winterthur

+41 (0) 58 934 78 36
beat.ruhstaller@zhaw.ch

Work at ZHAW

Position

Head of Organic Electronics and Photovoltaics

Projects

Packaging technology, stability evaluation, and non-destructive testing for commercialization of perovskite solar modules / Deputy project leader / laufend
Rationally Designed Thin Contact Layers enabling Large-Scale Perovskite-on-Silicon Tandem Photovoltaics / Co-project leader / laufend
Advanced Materials and Characterization Tools for Quantum-Dot enhanced Displays / Deputy project leader / laufend
Defect Engineering, Advanced Modelling and Characterization for Next Generation Opto-Electronic-Ionic Devices / Deputy project leader / laufend
Fabrication of single crystal perovskite memristor / Project leader / abgeschlossen
PV2050: Simulation and Characterization / Deputy project leader / abgeschlossen

Publications

Articles in scientific journal, peer-reviewed

Battaglia, Mattia; Comi, Ennio; Stadelmann, Thilo; Hiestand, Roman; Ruhstaller, Beat; Knapp, Evelyne,

2023.

Deep ensemble inverse model for image-based estimation of solar cell parameters.

APL Machine Learning.

1(3), pp. 036108.

Available from: https://doi.org/10.1063/5.0139707
Kissling, Gabriela P.; Ruhstaller, Beat; Pernstich, Kurt P.,

2023.

Measuring frontier orbital energy levels of OLED materials using cyclic voltammetry in solution.

Organic Electronics.

122(106888).

Available from: https://doi.org/10.1016/j.orgel.2023.106888
Sem, Stefano; Jenatsch, Sandra; Stavrou, Kleitos; Danos, Andrew; Monkman, Andrew P.; Ruhstaller, Beat,

2022.

Determining non-radiative decay rates in TADF compounds using coupled transient and steady state optical data.

Journal of Materials Chemistry C.

10(12), pp. 4878-4885.

Available from: https://doi.org/10.1039/D1TC05594A
Zeder, Simon; Ruhstaller, Beat; Aeberhard, Urs,

2022.

Assessment of photon recycling in perovskite solar cells by fully coupled optoelectronic simulation.

Physical Review Applied.

17(1), pp. 014023.

Available from: https://doi.org/10.1103/PhysRevApplied.17.014023
Aeberhard, Urs; Schiller, Andreas; Masson, Yannick; Zeder, Simon J.; Blülle, Balthasar; Ruhstaller, Beat,

2022.

Analysis and optimization of organic tandem solar cells by full opto-electronic simulation.

Frontiers in Photonics.

3(891565).

Available from: https://doi.org/10.3389/fphot.2022.891565
Aeberhard, Urs; Zeder, Simon J.; Ruhstaller, Beat,

2022.

Impact of photon recycling on the light extraction from metal halide perovskite light emitting diodes.

Optical and Quantum Electronics.

54(10), pp. 617.

Available from: https://doi.org/10.1007/s11082-022-03791-9
Regnat, Markus; Moon, Chang-Ki; Jenatsch, Sandra; Ruhstaller, Beat; Pernstich, Kurt P.,

2022.

Pinpointing the origin of the increased driving voltage during prolonged operation in a phosphorescent OLED based on an exciplex host.

Organic Electronics.

108(106570).

Available from: https://doi.org/10.1016/j.orgel.2022.106570
Aeberhard, Urs; Zeder, Simon; Ruhstaller, Beat,

2021.

Reconciliation of dipole emission with detailed balance rates for the simulation of luminescence and photon recycling in perovskite solar cells.

Optics Express.

29(10), pp. 14773-14788.

Available from: https://doi.org/10.1364/OE.424091
Comi, Ennio; Knapp, Evelyne; Weidmann, Stefano; Kirsch, Christoph; Jenatsch, Sandra; Hiestand, Roman; Ruhstaller, Beat,

2021.

Sinusoidal small-signal (AC) and steady-state (DC) analysis of large-area solar cells.

Solar Energy Advances.

1(100003).

Available from: https://doi.org/10.1016/j.seja.2021.100003
Diethelm, Matthias; Penninck, Lieven; Regnat, Markus; Offermans, Ton; Zimmermann, Birger; Kirsch, Christoph; Hiestand, Roman; Altazin, Stéphane; Ruhstaller, Beat,

2020.

Finite element modeling for analysis of electroluminescence and infrared images of thin-film solar cells.

Solar Energy.

209, pp. 186-193.

Available from: https://doi.org/10.1016/j.solener.2020.08.058
Zeder, Simon; Kirsch, Christoph; Aeberhard, Urs; Blülle, Balthasar; Jenatsch, Sandra; Ruhstaller, Beat,

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.

Available from: https://doi.org/10.1002/jsid.903
Jenatsch, Sandra; Züfle, Simon; Blülle, Balthasar; Ruhstaller, Beat,

2020.

Combining steady-state with frequency and time domain data to quantitatively analyze charge transport in organic light-emitting diodes.

Journal of Applied Physics.

127(3).

Available from: https://doi.org/10.1063/1.5132599
Jagielski, Jakub; Solari, Simon F.; Jordan, Lucie; Scullion, Declan; Blülle, Balthasar; Li, Yen-Ting; Krumeich, Frank; Chiu, Yu-Cheng; Ruhstaller, Beat; Santos, Elton J. G.; Shih, Chih-Jen,

2020.

Scalable photonic sources using two-dimensional lead halide perovskite superlattices.

Nature Communications.

11(1).

Available from: https://doi.org/10.1038/s41467-019-14084-3
Hofmann, Alexander J.L.; Züfle, Simon; Shimizu, Kohei; Schmid, Markus; Wessels, Vivien; Jäger, Lars; Altazin, Stéphane; Ikegami, Keitaro; Khan, Motiur Rahman; Neher, Dieter; Ishii, Hisao; Ruhstaller, Beat; Brütting, Wolfgang,

2019.

Dipolar doping of organic semiconductors to enhance carrier injection.

Physical Review Applied.

12(6), pp. 064052.

Available from: https://doi.org/10.1103/PhysRevApplied.12.064052
Regnat, Markus; Pernstich, Kurt P.; Kim, Kwon‐Hyeon; Kim, Jang‐Joo; Nüesch, Frank; Ruhstaller, Beat,

2019.

Routes for efficiency enhancement in fluorescent TADF exciplex host OLEDs gained from an electro‐optical device model.

Advanced Electronic Materials.

6(2), pp. 1900804.

Available from: https://doi.org/10.1002/aelm.201900804
Diethelm, Matthias; Schiller, Andreas; Kawecki, Maciej; Devižis, Andrius; Blülle, Balthasar; Jenatsch, Sandra; Knapp, Evelyne; Grossmann, Quirin; Ruhstaller, Beat; Nüesch, Frank; Hany, Roland,

2019.

The dynamic emission zone in sandwich polymer light‐emitting electrochemical cells.

Advanced Functional Materials.

2019(1906803).

Available from: https://doi.org/10.1002/adfm.201906803
Regnat, Markus; Pernstich, Kurt; Ruhstaller, Beat,

2019.

Influence of the bias-dependent emission zone on exciton quenching and OLED efficiency.

Organic Electronics.

70, pp. 219-226.

Available from: https://doi.org/10.1016/j.orgel.2019.04.027
Neukom, Martin T.; Schiller, Andreas; Züfle, Simon; Knapp, Evelyne; Ávila, Jorge; Pérez-del-Rey, Daniel; Dreessen, Chris; Zanoni, Kassio P.S.; Sessolo, Michele; Bolink, Henk J.; Ruhstaller, Beat,

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.

Available from: https://doi.org/10.1021/acsami.9b04991
Regnat, Markus; Pernstich, Kurt P.; Züfle, Simon; Ruhstaller, Beat,

2018.

Analysis of the bias-dependent split emission zone in phosphorescent OLEDs.

ACS Applied Materials & Interfaces.

10(37), pp. 31552-31559.

Available from: https://doi.org/10.1021/acsami.8b09595
Fluhr, Daniel; Züfle, Simon; Muhsin, Burhan; Öttking, Rolf; Seeland, Marco; Roesch, Roland; Schubert, Ulrich S.; Ruhstaller, Beat; Krischok, Stefan; Hoppe, Harald,

2018.

Aluminum electrode insulation dynamics via interface oxidation by reactant diffusion in organic layers.

Physica status solidi A.

215(23).

Available from: https://doi.org/10.1002/pssa.201800474
Altazin, Stéphane; Stepanova, L.; Werner, J.; Niesen, B.; Ballif, C.; Ruhstaller, B.,

2018.

Design of perovskite/crystalline-silicon monolithic tandem solar cells.

Optics Express.

26(10), pp. A579-A590.

Available from: https://doi.org/10.1364/OE.26.00A579
Neukom, Martin; Züfle, Simon; Jenatsch, Sandra; Ruhstaller, Beat,

2018.

Opto-electronic characterization of third-generation solar cells.

Science and Technology of Advanced Materials.

19(1), pp. 291-316.

Available from: https://doi.org/10.1080/14686996.2018.1442091
Wang, Lei; Jenatsch, Sandra; Ruhstaller, Beat; Hinderling, Christian; Gesevičius, Donatas; Hany, Roland; Nüesch, Frank,

2018.

Organic salt semiconductor with high photoconductivity and long carrier lifetime.

Advanced Functional Materials.

28(16), pp. 1705724.

Available from: https://doi.org/10.1002/adfm.201705724
Jenatsch, Sandra; Altazin, Stéphane; Will, Paul Anton; Neukom, Martin T.; Knapp, Evelyne; Züfle, Simon; Lenk, Simone; Reineke, Sebastian; Ruhstaller, Beat,

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).

Available from: https://doi.org/10.1063/1.5044494
Diethelm, Matthias; Penninck, Lieven; Altazin, Stéphane; Hiestand, Roman; Kirsch, Christoph; Ruhstaller, Beat,

2018.

Quantitative analysis of pixel crosstalk in AMOLED displays.

Journal of Information Display.

19(2), pp. 61-69.

Available from: https://doi.org/10.1080/15980316.2018.1428232
Altazin, Stéphane; Kirsch, Christoph; Knapp, Evelyne; Stous, Alexandre; Ruhstaller, Beat,

2018.

Refined drift-diffusion model for the simulation of charge transport across layer interfaces in organic semiconductor devices.

Journal of Applied Physics.

124(13), pp. 135501.

Available from: https://doi.org/10.1063/1.5043245
Züfle, Simon; Altazin, Stéphane; Hofmann, Alexander; Jäger, Lars; Neukom, Martin T.; Brütting, Wolfgang; Ruhstaller, Beat,

2017.

Determination of charge transport activation energy and injection barrier in organic semiconductor devices.

Journal of Applied Physics.

122(115502).

Available from: https://doi.org/10.1063/1.4992041
Züfle, Simon; Altazin, Stéphane; Hofmann, Alexander; Jäger, Lars; Neukom, Martin; Schmidt, Tobias D.; Brütting, Wolfgang; Ruhstaller, Beat,

2017.

The use of charge extraction by linearly increasing voltage in polar organic light-emitting diodes.

Journal of Applied Physics.

121(175501).

Available from: https://doi.org/10.1063/1.4982903
Kirsch, Christoph; Altazin, Stéphane; Hiestand, Roman; Beierlein, Tilman; Ferrini, Rolando; Offermans, Ton; Pennick, L.; Ruhstaller, Beat,

2017.

Electrothermal simulation of large-area semiconductor devices.

The International Journal of Multiphysics.

11(2), pp. 127-136.

Available from: https://doi.org/10.21152/1750-9548.11.2.127
Neukom, Martin; Züfle, Simon; Knapp, Evelyne; Makha, Mohammed; Hany, Roland; Ruhstaller, Beat,

2017.

Why perovskite solar cells with high efficiency show small IV-curve hysteresis.

Solar Energy Materials & Solar Cells.

169, pp. 159-166.

Available from: https://doi.org/10.1016/j.solmat.2017.05.021
Altazin, Stéphane; Züfle, Simon; Knapp, Evelyne; Kirsch, Christoph; Schmidt, T.D.; Jäger, L.; Noguchi, Y.; Brütting, W.; Ruhstaller, Beat,

2016.

Simulation of OLEDs with a polar electron transport layer.

Organic Electronics.

39, pp. 244-249.

Available from: https://doi.org/10.1016/j.orgel.2016.10.014
Züfle, Simon; Neukom, Martin T.; Altazin, Stéphane; Zinggeler, Marc; Chrapa, Marek; Offermans, Ton; Ruhstaller, Beat,

2015.

An effective area approach to model lateral degradation in organic solar cells.

Advanced Energy Materials.

5(20).

Available from: https://doi.org/10.1002/aenm.201500835
Jenatsch, Sandra; Geiger, Thomas; Heier, Jakob; Kirsch, Christoph; Nüesch, Frank; Paracchino, Adriana; Rentsch, Daniel; Ruhstaller, Beat; Véron, Anna C.; Hany, Roland,

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).

Available from: https://doi.org/10.1088/1468-6996/16/3/035003
Knapp, Evelyne; Ruhstaller, Beat,

2015.

Analysis of negative capacitance and self-heating in organic semiconductor devices.

Journal of Applied Physics.

117(13).

Available from: https://doi.org/10.1063/1.4916981
Eck, Michael; Van Pham, Chuyen; Züfle, Simon; Neukom, Martin; Sessler, Martin; Scheunemann, Dorothea; Erdem, Emre; Weber, Stefan; Borchert, Holger; Ruhstaller, Beat; Krüger, Michael,

2014.

Improved efficiency of bulk heterojunction hybrid solar cells by utilizing CdSe quantum dot–graphene nanocomposites.

Physical Chemistry Chemical Physics.

16(24), pp. 12251-12260.

Available from: https://doi.org/10.1039/c4cp01566e
Jenatsch, Sandra; Hany, Roland; Véron, Anna C.; Neukom, Martin; Züfle, Simon; Borgschulte, Andreas; Ruhstaller, Beat; Nüesch, Frank,

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.

Available from: https://doi.org/10.1021/jp5005314
Lanz, Thomas; Bonmarin, Mathias; Stuckelberger, Michael; Schlumpf, Christian; Ballif, Christophe; Ruhstaller, Beat,

2013.

Electrothermal finite-element modeling for defect characterization in thin-film silicon solar modules.

IEEE Journal of Selected Topics in Quantum Electronics.

19(5), pp. 1-8.

Available from: https://doi.org/10.1109/JSTQE.2013.2250259
Lanz, Thomas; Fang, Liang; Baik, Seung Jae; Lim, Kong Su; Ruhstaller, Beat,

2012.

Photocurrent increase in amorphous Si solar cells by increased reflectivity of LiF/Al electrodes.

Solar Energy Materials & Solar Cells.

107, pp. 259-262.

Available from: https://doi.org/10.1016/j.solmat.2012.06.044
Neukom, M. T.; Züfle, Simon; Ruhstaller, Beat,

2012.

Reliable extraction of organic solar cell parameters by combining steady-state and transient techniques.

Organic Electronics.

13(12), pp. 2910-2916.

Available from: https://doi.org/10.1016/j.orgel.2012.09.008
Knapp, Evelyne; Ruhstaller, Beat,

2012.

The role of shallow traps in dynamic characterization of organic semiconductor devices.

Journal of Applied Physics.

112(2).

Available from: https://doi.org/10.1063/1.4739303
Knapp, Evelyne; Ruhstaller, Beat,

2011.

Numerical analysis of steady-state and transient charge transport in organic semiconductor devices.

Optical and Quantum Electronics.

42(11–13), pp. 667-677.

Available from: https://doi.org/10.1007/s11082-011-9443-1
Lanz, Thomas; Ruhstaller, Beat; Battaglia, Corsin; Ballif, Christophe,

2011.

Extended light scattering model incorporating coherence for thin-film silicon solar cells.

Journal of Applied Physics.

110(3).

Available from: https://doi.org/10.1063/1.3622328
Knapp, Evelyne; Ruhstaller, Beat,

2011.

Numerical impedance analysis for organic semiconductors with exponential distribution of localized states.

Applied Physics Letters.

99(9).

Available from: https://doi.org/10.1063/1.3633109
Knapp, Evelyne; Häusermann, Roger; Schwarzenbach, Hansueli; Ruhstaller, Beat,

2010.

Numerical simulation of charge transport in disordered organic semiconductor devices.

Journal of Applied Physics.

108(5), pp. 054504-1-054504-8.

Available from: https://doi.org/10.1063/1.3475505
Häusermann, R.; Knapp, Evelyne; Moos, M.; Reinke, N. A.; Flatz, T.; Ruhstaller, Beat,

2009.

Coupled opto-electronic simulation of organic bulk-heterojunction solar cells : parameter extraction and sensitivity analysis.

Journal of Applied Physics.

106(10), pp. 104507.

Available from: https://doi.org/10.1063/1.3259367
Leger, J.M.; Carter, S.A.; Ruhstaller, Beat,

2005.

Recombination profiles in poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] light-emitting electrochemical cells.

Journal of Applied Physics.

98(12).

Available from: https://doi.org/10.1063/1.2149162
Leger, J. M.; Carter, S. A.; Ruhstaller, Beat; Nothofer, H.-G.; Scherf, Ullrich; Tillmann, H.; Hörhold, H.-H.,

2003.

Thickness-dependent changes in the optical properties of PPV- and PF-based polymer light emitting diodes.

Physical Review B.

68(5).

Available from: https://doi.org/10.1103/PhysRevB.68.054209
Beierlein, T. A.; Ruhstaller, Beat; Gundlach, D. J.; Riel, H.; Karg, S.; Rost, C.; Riess, W.,

2003.

Investigation of internal processes in organic light-emitting devices using thin sensing layers.

Synthetic Metals.

138(1–2), pp. 213-221.

Available from: https://doi.org/10.1016/S0379-6779(02)01269-9
Riel, H.; Karg, S.; Beierlein, T.; Ruhstaller, Beat; Riess, W.,

2003.

Phosphorescent top-emitting organic light-emitting devices with improved light outcoupling.

Applied Physics Letters.

82(3).

Available from: https://doi.org/10.1063/1.1537052
Ruhstaller, Beat; Carter, S.; Barth, S.; Riel, H.; Riess, W.; Scott, J.C.,

2001.

Transient and steady-state behavior of space charges in multilayer organic light-emitting diodes.

Journal of Applied Physics.

89(8), pp. 4575.

Available from: https://doi.org/10.1063/1.1352027
Ruhstaller, Beat; Scott, J.C.; Brock, P.J.; Scherf, Ullrich; Carter, S.A.,

2000.

Bias-tuned reduction of self-absorption in polymer blend electroluminescence.

Chemical Physics Letters.

317(3-5), pp. 238-244.

Available from: https://doi.org/10.1016/S0009-2614(99)01390-1
Bliznyuk, Valery N.; Ruhstaller, Beat; Brock, P.J.; Scherf, Ullrich; Carter, S.A.,

1999.

Self-assembled nanocomposite polymer light-emitting diodes with improved efficiency and luminance.

Advanced Materials.

11(15), pp. 1257-1261.

Available from: https://doi.org/10.1002/(SICI)1521-4095(199910)11:15<1257::AID-ADMA1257>3.0.CO;2-D
Salis, G.; Ruhstaller, Beat; Ensslin, K.; Campman, K.; Maranowski, K.; Gossard, A. C.,

1998.

Subband densities in quantum wells under in-plane magnetic fields.

Physical Review B.

58(3), pp. 1436-1441.

Available from: https://doi.org/10.1103/PhysRevB.58.1436

Book parts, peer-reviewed

Altazin, Stéphane; Penninck, Lieven; Ruhstaller, Beat,

2018.

Outcoupling technologies : concepts, simulation, and implementation

.

In:

Handbook of organic light-emitting diodes.

Tokyo:

Springer.

pp. 1-22.

Available from: https://doi.org/10.1007/978-4-431-55761-6_21-1

Conference contributions, peer-reviewed

Regnat, Markus; Pernstich, Kurt; Blülle, Balthasar; Jenatsch, Sandra; Heo, Moon K.; Ruhstaller, Beat, eds.,

2024.

Modeling the impact of the illumination geometry on the light conversion efficiency in quantum dot down-conversion films.

International Conference on Display Technology ICDT, Hefei, China, 31 March - 3 April 2024.

.
Comi, Ennio; Knapp, Evelyne; Battaglia, Mattia; Kirsch, Christoph; Weidmann, Stefano; Jenatsch, Sandra; Hiestand, Roman; Bonmarin, Mathias; Ruhstaller, Beat; et al.,

2022.

Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells [paper].

In:

EU PVSEC Proceedings.

8th World Conference on Photovoltaic Energy Conversion, Milan, Italy, 26-30 September 2022.

WIP.

pp. 241-246.

Available from: https://doi.org/10.4229/WCPEC-82022-2BO.8.3
Regnat, M.; Pernstich, K. P.; Jenatsch, S.; Ruhstaller, B.,

2021.

Detailed explanation of the increased driving voltage in a TADF exciplex host OLED during prolonged operation via a quantitative device model [poster].

In:

13th Asian Conference on Organic Electronics (A-COE 2021), Online, 2-4 September 2021.
Knapp, Evelyne; Battaglia, Mattia; Stadelmann, Thilo; Jenatsch, Sandra; Ruhstaller, Beat,

2021.

XGBoost trained on synthetic data to extract material parameters of organic semiconductors [paper].

In:

Proceedings of the 8th SDS.

8th Swiss Conference on Data Science, Lucerne, Switzerland, 9 June 2021.

IEEE.

pp. 46-51.

Available from: https://doi.org/10.1109/SDS51136.2021.00015
Häusermann, Roger; Jenatsch, Sandra; Leganés Carballo, Jaime; Sharifidehsari, Hamed; Blülle, Balthasar; Züfle, Simon; Liaptsis, Georgios; Ruhstaller, Beat,

2021.

Optimizing charge transport and reducing excitonic loss channels in fluorescent doped TADF OLEDs [paper].

In:

SID International Symposium : Digest of Technical Papers.

International Conference on Display Technology (ICDT), Wuhan, China, 11-14 October 2020.

Wiley.

pp. 341-344.

Available from: https://doi.org/10.1002/sdtp.14686
Jenatsch, Sandra; Züfle, Simon; Blülle, Balthasar; Ruhstaller, Beat,

2021.

Combining steady‐state, frequency, and time domain data for a comprehensive analysis of multilayer TADF OLEDs [paper].

In:

SID International Symposium : Digest of Technical Papers.

International Conference on Display Technology (ICDT), Wuhan, China, 11-14 October 2020.

Wiley.

pp. 299-302.

Available from: https://doi.org/10.1002/sdtp.14470
Aeberhard, Urs; Zeder, Simon J.; Ruhstaller, Beat,

2021.

Photon recycling in perovskite solar cells assessed by a detailed-balance compatible dipole emission model [paper].

In:

2021 IEEE 48th Photovoltaic Specialists Conference (PVSC).

48th IEEE Photovoltaic Specialists Conference (PVSC), Virtual Conference, 20-25 June 2021.

IEEE.

pp. 0278-0282.

Available from: https://doi.org/10.1109/PVSC43889.2021.9518720
Aeberhard, Urs; Zeder, Simon; Ruhstaller, Beat,

2021.

Rigorous simulation of photon recycling effects in perovskite solar cells and LEDs [paper].

In:

2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD).

21st International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Turin (online), 13-17 September 2021.

IEEE.

pp. 63-64.

Available from: https://doi.org/10.1109/NUSOD52207.2021.9541505
Aeberhard, Urs; Häusermann, Roger; Schiller, Andreas; Blülle, Balthasar; Ruhstaller, Beat,

2020.

Analysis and optimization of perovskite-silicon tandem solar cells by full opto-electronic simulation [paper].

In:

2020 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD).

20th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Turin (online), 14-18 September 2020.

IEEE.

pp. 37-38.

Available from: https://doi.org/10.1109/NUSOD49422.2020.9217773
Jenatsch, Sandra; Züfle, Simon; Blülle, Balthasar; Ruhstaller, Beat,

2020.

Combining steady‐state, frequency, and time domain data for a comprehensive analysis of multilayer TADF OLEDs [paper].

In:

SID International Symposium : Digest of Technical Papers.

Display Week 2020, online, 3-7 August 2020.

Wiley.

pp. 634-637.

Available from: https://doi.org/10.1002/sdtp.13947
Aeberhard, Urs; Neukom, Martin T.; Schiller, Andreas; Zuefle, Simon; Jenatsch, Sandra; Blülle, Balthasar; Altazin, Stéphane; Stepanova, Lidia; Knapp, Evelyne; Kirsch, Christoph; Ruhstaller, Beat,

2020.

Computational device optimization and parameter extraction for perovskite-based solar cells [paper].

In:

Freundlich, Alexandre; Sugiyama, Masakazu; Collin, Stéphane, eds.,

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX.

SPIE Photonics West, San Francisco, USA, 1-6 February 2020.

SPIE.

pp. 112750B.

Proceedings of SPIE ; 11275.

Available from: https://doi.org/10.1117/12.2545507
Blülle, Balthasar; Altazin, Stéphane; Frouin, Bérengère; Stepanova, Lidia; Jenatsch, Sandra; Ruhstaller, Beat,

2019.

Light conversion and scattering properties of QD films for display applications : angle‐resolved optical spectroscopy and numerical simulation [paper].

In:

SID International Symposium : Digest of Technical Papers.

International Conference on Display Technology (ICDT), Kunshan, China, 26-29 March 2019.

Wiley.

Available from: https://doi.org/10.1002/sdtp.13512
Braga, Daniele; Jenatsch, Sandra; Penninck, Lieven; Hiestand, Roman; Diethelm, Matthias; Altazin, Stéphane; Kirsch, Christoph; Ruhstaller, Beat,

2019.

Modeling electrical and optical cross‐talk between adjacent pixels in organic light‐emitting diode displays [paper].

In:

SID International Symposium : Digest of Technical Papers.

International Conference on Display Technology (ICDT), Kunshan, China, 26-29 March 2019.

Wiley.

pp. 953-956.

Available from: https://doi.org/10.1002/sdtp.13083
Aeberhard, Urs; Altazin, Stéphane; Stepanova, Lidia; Stous, Alexandre; Blulle, Balthasar; Kirsch, Christoph; Knapp, Evelyne; Ruhstaller, Beat,

2019.

Numerical optimization of organic and hybrid multijunction solar cells [paper].

In:

2019 IEEE 46th Photovoltaic Specialists Conference (PVSC).

2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), Chicago, USA, 16-21 June 2019.

IEEE.

pp. 0105-0111.

Available from: https://doi.org/10.1109/PVSC40753.2019.8980824
Knapp, Evelyne; Ruhstaller, Beat,

2015.

Analysis of self-heating and negative capacitance in organic semiconductors devices [paper].

In:

International Symposium of the Society for Information display (SID), San Jose, USA, 21 May - 5 June 2015.

Wiley.

pp. 778-781.

Available from: https://doi.org/10.1002/sdtp.10224
Altazin, Stéphane; Reynaud, Clément; Mayer, Ursula Maria; Lanz, Thomas; Lapagna, Kevin; Knaack, Reto; Penninck, Lieven; Kirsch, Christoph; Pernstich, Kurt P.; Harkema, Stephan; Hermes, Dorothee; Ruhstaller, Beat,

2015.

Simulations, measurements and optimization of OLEDs with scattering layer [paper].

In:

SID international symposium : digest of technical papers.

International Symposium of the Society for Information display (SID), San Jose, USA, 21 May - 5 June 2015.

Wiley.

pp. 564-567.

Available from: https://doi.org/10.1002/sdtp.10478
Lanz, Thomas; Bonmarin, Mathias; Ruhstaller, Beat; Offermans, Ton,

2014.

Failure modes in all-plastic encapsulated flexible organic solar modules : experimental and computational analysis [poster].

In:

Graetzel, Michael; Nazeeruddin, Mohammad, eds.,

Proceedings of the 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14).

6th International Conference on Hybrid and Organic Photovoltaics (HOPV14), Ecublens, 11-14 May 2014.

nanoGe.
Altazin, Stéphane; Lapagna, Kevin; Lanz, Thomas; Kirsch, Christoph; Knaack, Reto; Ruhstaller, Beat,

2014.

Design tool for light scattering enhancement in OLEDs [paper].

In:

SID symposium : digest of technical papers.

Organic Light-Emitting Diodes in Society of Information Display, San Diego, USA, 1-6 June 2014.

Wiley.

pp. 576-579.

Available from: https://doi.org/10.1002/j.2168-0159.2014.tb00151.x
Altazin, Stéphane; Perucco, Benjamin; Pagan, Nicolò; Lapagna, Kevin; Lanz, Thomas; Knaack, Reto; Knapp, Evelyne; Ruhstaller, Beat,

2013.

Multi-scale modeling of organic light-emitting devices [paper].

In:

SID International Symposium: Digest of Technical Papers.

International Symposium of the Society for Information display (SID), San Jose, USA, 19-24 May 2013.

Wiley.

pp. 1486-1489.

Available from: https://doi.org/10.1002/j.2168-0159.2013.tb06529.x

Other publications

Zeder, Simon; Aeberhard, Urs; Ruhstaller, Beat; Tress, Wolfgang,

2023.

Photon recycling in metal halide perovskites : its modeling and relevance to optoelectronic devices

.

In:

Martínez-Pastor, Juan P.; Boix, Pablo P.; Xing, Guichuan, eds.,

Metal Halide Perovskites for Generation, Manipulation and Detection of Light.

Amsterdam:

Elsevier.

pp. 507-545.

Photonic Materials and Applications.

Available from: https://doi.org/10.1016/B978-0-323-91661-5.00001-5
Aeberhard, Urs; Hiestand, Roman; Ruhstaller, Beat,

2020.

Simulation of beam shaping by micro‐textures for curved displays [paper].

In:

SID International Symposium : Digest of Technical Papers.

Display Week 2020, online, 3-7 August 2020.

Wiley.

pp. 957-959.

Available from: https://doi.org/10.1002/sdtp.14030
Jenatsch, Sandra; Züfle, Simon; Will, Paul Anton; Bülle, Balthasar; Neukom, Martin; Lenk, Simone; Reineke, Sebastian; Braga, Daniele; Domanski, Konrad; Ruhstaller, Beat,

2019.

Quantitative analysis of charge transport in single‐carrier devices and OLEDs combining DC and AC data [paper].

In:

SID International Symposium : Digest of Technical Papers.

International Conference on Display Technology (ICDT), Kunshan, China, 26-29 March 2019.

pp. 1895-1898.

Available from: https://doi.org/10.1002/sdtp.13333
Penninck, Lieven; Diethelm, Matthias; Altazin, Stéphane; Hiestand, Roman; Kirsch, Christoph; Ruhstaller, Beat,

2018.

Modelling crosstalk through common semiconductor layers in AMOLED displays.

Journal of the Society for Information Display.

26(9), pp. 546-554.

Available from: https://doi.org/10.1002/jsid.671
Jenatsch, Sandra; Regnat, Markus; Hany, Roland; Diethelm, Matthias; Nüesch, Frank; Ruhstaller, Beat,

2018.

Time-dependent p–i–n structure and emission zone in sandwich-type light-emitting electrochemical cells.

ACS Photonics.

5(4), pp. 1591-1598.

Available from: https://doi.org/10.1021/acsphotonics.8b00047
Altazin, Stéphane; Züfle, Simon; Knapp, Evelyne; Kirsch, Christoph; Schmidt, Tobias D.; Jäger, Lars; Brütting, Wolfgang; Ruhstaller, Beat,

2016.

Combining simulators and experiments to study the impact of polar OLED materials [paper].

In:

SID Symposium Digest of Technical Papers.

SID International Symposium, San Francisco, USA, 22-27 May 2016.

Wiley.

pp. 1750-1753.

Available from: https://doi.org/10.1002/sdtp.11059
Losio, Paolo Antonio; Feurer, Thomas; Buecheler, Stephan; Ruhstaller, Beat,

2016.

Evolutionary optimization of TCO/mesh electrical contacts in CIGS solar cells [paper].

In:

Proceedings of the EU PVSEC 2016 (Munich).

32nd European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2016), Munich, Germany, 20-24 June 2016.

WIP Wirtschaft und Infrastruktur.

pp. 1237-1240.

Available from: https://doi.org/10.21256/zhaw-1987
Altazin, Stéphane; Züfle, Simon; Knapp, Evelyne; Kirsch, Christoph; Schmidt, Tobias D.; Jäger, Lars; Brütting, Wolfgang; Ruhstaller, Beat,

2016.

On the role of polar molecules and the barrier for charge injection in OLEDs [paper].

In:

So, Franky; Adachi, Chihaya; Kim, Jang-Joo, eds.,

Proceedings of SPIE, Organic Light Emitting Materials and Devices XX.

SPIE Organic Photonics + Electronics, San Diego, USA, 28 August - 1 September 2016.

Available from: https://doi.org/10.1117/12.2238620
Knapp, Evelyne; Ruhstaller, Beat,

2015.

Analysis of self-heating and trapping in organic semiconductor devices [paper].

In:

So, Franky; Adachi, Chihaya; Kim, Jang-Joo, eds.,

Organic Light Emitting Materials and Devices XIX.

Organic Light Emitting Materials and Devices XIX, San Diego, USA, 9-11 August 2015.

SPIE.

Available from: https://doi.org/10.1117/12.2185712
Altazin, Stéphane; Lanz, Thomas; Lapagna, Kevin; Ruhstaller, Beat,

2013.

Impact of light scattering for efficiency enhancement in organic solar cells [paper].

In:

28th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), Paris, France, 30 September - 4 October 2013.

WIP.

Available from: https://doi.org/10.21256/zhaw-1994
Ruhstaller, Beat; Flatz, T.; Sartoris, Guido; Kiy, M.; Beierlein, Tilman; Winnewisser, C.; Pretot, R.; Chebotareva, N.; v.d. Schaaf, P.,

2006.

Optoelectronic OLED modeling for characterization and optimization [paper].

In:

Organic Electronics Conference and Exhibition, Frankfurt, Germany, 25-27 September 2006.
Ruhstaller, Beat; Beierlein, Tilman A.; Gmür, Roman; Karg, Siegfried; Riel, Heike; Sartoris, Guido; Schwarzenbach, Hansueli; Riess, Walter,

2004.

Parameter extraction and validation of an electronic and optical model for organic light-emitting devices [paper].

In:

Wachutka, Gerhard; Schrag, Gabriele, eds.,

Simulation of Semiconductor Processes and Devices 2004.

10th International Conference on Simulation of Semiconductor Processes and Devices (SISPAD), Munich, 2-4 September 2004.

Springer.

pp. 157-161.

Available from: https://doi.org/10.21256/zhaw-1995
Ruhstaller, Beat; Schwarzenbach, H. U.,

2004.

Virtuelle Experimente für die Ingenieurausbildung.

ZHWInfo.

19, pp. 45.
Ruhstaller, Beat; Beierlein, T. A.; Riel, H.; Karg, S.; Scott, J. C.; Riess, W.,

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.

Available from: https://doi.org/10.1109/JSTQE.2003.818852
Hocker, Thomas; Sartoris, Guido; Ruhstaller, Beat; Haller, Thomas; Schwarzenbach, Hansueli,

2003.

Mikro- und Nanotechnologie am Center for Computational Physics.

ZHWInfo.

17.
Beierlein, T. A.; Riel, H.; Ruhstaller, Beat; Hofmann, H.; Crone, B. K.; Karg, S.; Riess, W.,

2002.

Tuning of electrical and optical properties of organic LEDs using combinatorial device fabrication.

Journal of the Society for Information Display.

10(4), pp. 311-315.

Available from: https://doi.org/10.1889/1.1827883

Oral conference contributions and abstracts

Comi, Ennio; Jenatsch, Sandra; Blülle, Balthasar; Battaglia, Mattia; Torre Cachafeiro, Miguel Angel; Kirsch, Christoph; Hiestand, Roman; Aeberhard, Urs; Ruhstaller, Beat; Knapp, Evelyne,

2023.

Investigation of time and location dependent variations in electroluminescence images of perovskite solar cells.

In:

Proceedings of the 40th European Photovoltaic Solar Energy Conference and Exhibition.

40th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), Lisbon, Portugal, 18-22 September 2023.

München:

WIP.

pp. 020077-001-020077-022.
Regnat, M.; Jenatsch, S.; Züfle, S.; Pernstich, K. P.; Ruhstaller, B.,

2021.

Advanced characterization and device simulation towards better understanding of OLED degradation mechanisms.

In:

21st International Meeting on Information Display (IMID 2021), Seoul, Korea, 25-27 August 2021.
Lanz, Thomas; Boccard, Mathieu; Despeisse, Matthieu; Battaglia, Corsin; Haug, Franz-Josef; Ballif, Christophe; Ruhstaller, Beat,

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.

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