Dr. Johannes Greulich

Head of Group Inline Solar Cell Analytics and Simulation, Division Photovoltaic

Short biography

Johannes Greulich received the Diploma degree in physics from the University of Freiburg, Germany, in 2010. He received a Ph.D. Fellowship from the German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt) and the Ph.D. degree in physics in 2014 from the University of Freiburg, Germany for his work on electrical and optical simulation and characterization of crystalline silicon solar cells. Since 2015, he is Head of the Team for Inline Solar Cell Analysis and Image Processing at the Fraunhofer Institute for Solar Energy Systems. His research interests include the development of optical and electrical simulation and characterization methods focusing on crystalline silicon solar cells. 

Publications

Publication list on Google Scholar

Publication list from the Fraunhofer-Publica database:

YearTitle/AuthorDocument Type
2019Contactless determination of base resistivity on silicon wafers with highly doped surfaces
Höffler, H.; Brand, A.A.; Wirtz, W.; Greulich, J.
Journal Article
2019Influence of Fundamental Model Uncertainties on Silicon Solar Cell Efficiency Simulations
Wasmer, S.; Fell, A.; Greulich, J.M.
Journal Article
2019Suns-ILIT: Contact-Less Determination of Local solar Cell Current-Voltage Characteristics
Kwapil, W.; Wasmer, S.; Fell, A.; Greulich, J.G.; Schubert, M.C.
Journal Article
2018Analytical modeling of the temporal evolution of hot spot temperatures in silicon solar cells
Wasmer, S.; Rajsrima, N.; Geisemeyer, I.; Fertig, F.; Greulich, J.; Rein, S.
Journal Article
2018Efficiency Gain Analysis of Silicon Passivated Emitter and Rear Solar Cells Solely Based on Measurements
Wasmer, S.; Horst, A. van der; Saint-Cast, P.; Greulich, J.M.
Conference Paper
2018Efficiency Potential of P-Type PERT vs. PERC Solar Cells
Meier, S.; Wasmer, S.; Fell, A.; Wöhrle, N.; Greulich, J.; Wolf, A.
Conference Paper
2018Impact of Bifacial Illumination and Sorting Criteria of Bifacial Solar Cells on Module Power
Alapont Sabater, A.; Greulich, J.; Wöhrle, N.; Rein, S.; Ramspeck, K.
Conference Paper
2018Impact of Uncertainties of Fundamental Models on Simulated Silicon Solar Cell Efficiencies
Wasmer, S.; Fell, A.; Greulich, J.M.
Conference Paper
2018Industrial biPERC Solar Cells with Varied Rear Side Characteristics under Bifacial Illumination
Wöhrle, N.; Fellmeth, T.; Krieg, A.; Palinginis, P.; Weber, T.; Steckemetz, S.; Ramspeck, K.; Greulich, J.; Rein, S.
Conference Paper
2018IV-Measurements of Bifacial Solar Cells in an Inline Solar Simulator with Double-Sided Illumination
Krieg, A.; Greulich, J.; Ramspeck, K.; Dzafic, D.; Wöhrle, N.; Rauer, M.; Rein, S.
Conference Paper
2018Modeling-Free Efficiency Gain Analysis of Passivated Emitter and Rear Silicon Solar Cells
Wasmer, S.; Horst, A. van der; Saint-Cast, P.; Greulich, J.
Journal Article
2018Suns-ILIT: Accurate method for non-contacted local IV measurements
Kwapil, W.; Wasmer, S.; Fell, A.; Greulich, J.M.; Schubert, M.C.
Conference Paper
2017Analysis of the losses of industrial-type PERC solar cells
Saint-Cast, P.; Werner, S.; Greulich, J.; Jäger, U.; Lohmüller, E.; Höffler, H.; Preu, R.
Journal Article
2017Angle-dependent reflectance of isotextured silicon
Alapont Sabater, A.; Greulich, J.; Tucher, N.; Bläsi, B.; Glunz, S.W.
Conference Paper
2017Comparison of inline hot spot detection and evaluation algorithms for crystalline silicon solar cells
Wasmer, S.; Geisemeyer, I.; Pfengler, D.; Greulich, J.; Rein, S.
Conference Paper
2017Impact of material and process variations on the distribution of multicrystalline silicon PERC cell efficiencies
Wasmer, S.; Greulich, J.; Höffler, H.; Wöhrle, N.; Demant, M.; Fertig, F.; Rein, S.
Journal Article
2017Increasing the efficiency of multicrystalline silicon PERC solar cells from currently 19% to 20%
Greulich, J.; Lohmüller, E.; Saint-Cast, P.; Werner, S.; Wasmer, S.; Horst, A.J. van der; Preu, R.
Conference Paper
2017Internal resistance of rear totally diffused solar cells with line shaped contacts
Meier, S.; Saint-Cast, P.; Wöhrle, N.; Fell, A.; Greulich, J.; Wolf, A.; Glunz, S.W.
Journal Article
2017Key aspects for fabrication of p-type Cz-Si PERC solar cells exceeding 22% conversion efficiency
Werner, S.; Lohmüller, E.; Saint-Cast, P.; Greulich, J.M.; Weber, J.; Schmidt, S.; Moldovan, A.; Brand, A.A.; Dannenberg, T.; Mack, S.; Wasmer, S.; Demant, M.; Linse, M.; Ackermann, R.; Wolf, A.; Preu, R.
Conference Paper
2017Metamodeling of numerical device simulations to rapidly create efficiency optimization roadmaps of monocrystalline silicon PERC cells
Wasmer, S.; Brand, A.A.; Greulich, J.M.
Conference Paper
2017Modelling and analysis of solar cell efficiency distributions
Wasmer, S.; Greulich, J.
Journal Article
2017Rapid vapor-phase direct diffused emitter for solar cell applications
Kühnhold-Pospischil, S.; Gust, E.; Amiri, D.; Richter, A.; Steinhauser, B.; Drießen, M.; Michl, B.; Greulich, J.; Benick, J.; Lindekugel, S.; Janz, S.
Conference Paper
2017Review of tools and approaches for inline quality control in high efficiency silicon solar cell production
Haunschild, J.; Greulich, J.; Höffler, H.; Wasmer, S.; Emanuel, G.; Krieg, A.; Friedrich, L.; Rein, S.
Conference Paper
2017Selective boron emitters using laser-induced forward transfer versus laser doping from borosilicate glass
Fernandez-Robledo, S.; Kluska, S.; Greulich, J.; Nekarda, J.
Journal Article
2017Understanding the rear-side layout of p-doped bifacial PERC solar cells with simulation driven experiments
Wöhrle, N.; Fellmeth, T.; Greulich, J.; Bitnar, B.; Neuhaus, H.; Palinginis, P.; Köhler, R.; Rein, S.
Conference Paper
2017Validation of analytic modelling of local rear contacts in PERC/PERL solar cells
Saint-Cast, P.; Wöhrle, N.; Greulich, J.M.
Conference Paper
2016All-diffused back-contact back-junction solar cell with aluminum-alloyed emitter - experiment and simulation
Wöhrle, N.; Kimmerle, A.; Greulich, J.; Wolf, A.
Journal Article
2016Application and comparison of band gap narrowing models for passivated phosphorus doped silicon surfaces
Kimmerle, A.; Greulich, J.; Haug, H.; Wolf, A.
Journal Article
2016Bifacial potential of single- and double-sided collecting silicon solar cells
Fertig, F.; Wöhrle, N.; Greulich, J.; Krauß, K.; Lohmüller, E.; Meier, S.; Wolf, A.; Rein, S.
Journal Article
2016biPERC silicon solar cells enabling bifacial applications for industrial solar cells with passivated rear sides
Krauss, K.; Fertig, F.; Greulich, J.; Rein, S.; Preu, R.
Journal Article
2016Economic feasibility of bifacial silicon solar cells
Fertig, F.; Nold, S.; Wöhrle, N.; Greulich, J.; Hädrich, I.; Krauß, K.; Mittag, M.; Biro, D.; Rein, S.; Preu, R.
Journal Article
2016Modelling and analysis of solar cell efficiency distributions: Presentation held at 26th International Photovoltaic Science and Engineering Conference, PVSEC 2016, Singapore, 24 - 28 October 2016
Wasmer, S.; Greulich, J.; Höffler, H.; Wöhrle, N.; Rein, S.
Presentation
2016PC1Dmod 6.2 - improved simulation of c-Si devices with updates on device physics and user interface
Haug, H.; Greulich, J.
Journal Article
2016Towards understanding the characteristics of Ag-Al spiking on boron-doped silicon for solar cells
Wöhrle, N.; Lohmüller, E.; Greulich, J.; Werner, S.; Mack, S.
Journal Article
2016Understanding process-related efficiency variations of mc-Si PERC cells
Wasmer, S.; Greulich, J.; Höffler, H.; Wöhrle, N.; Rein, S.
Journal Article
2015Carrier-diffusion corrected J0-analysis of charge carrier lifetime measurements for increased consistency
Kimmerle, A.; Greulich, J.; Wolf, A.
Journal Article
2015Development, characterization and modelling of doping profile, contact resistance, and metal spiking in diffused and screen-printed boron emitters
Wöhrle, N.; Lohmüller, E.; Werner, S.; Greulich, J.
Conference Paper
2015Impact of boron doping profiles on the specific contact resistance of screen printed Ag-Al contacts on silicon
Lohmüller, E.; Werner, S.; Hoenig, R.; Greulich, J.; Clement, F.
Journal Article
2015Input parameters for the simulation of silicon solar cells in 2014
Fell, A.; McIntosh, K.R.; Altermatt, P.P.; Janssen, G.J.M.; Stangl, R.; Ho-Baillie, A.; Steinkemper, H.; Greulich, J.; Müller, M.; Min, B.; Fong, K.C.; Hermle, M.; Romijn, I.G.; Abbott, M.D.
Journal Article
2015Investigating the impact of parameter and process variations on multicrystalline PERC cell efficiency
Wasmer, S.; Greulich, J.; Höffler, H.; Haunschild, J.; Demant, M.; Rein, S.
Conference Paper
2015Optical simulation and analysis of iso-textured silicon solar cells and modules including light trapping
Greulich, J.; Volk, A.-K.; Wöhrle, N.; Hädrich, I.; Wiese, M.; Hermle, M.; Rein, S.
Journal Article
2015Overcoming systematic photocurrent calculation errors in ray tracing simulations
Wöhrle, N.; Greulich, J.
Journal Article
2015PC1Dmod 6.1 - state-of-the-art models in a well-known interface for improved simulation of Si solar cells
Haug, H.; Greulich, J.; Kimmerle, A.; Stensrud Marstein, E.
Journal Article
2014Analysing the lateral series resistance of high-performance metal wrap through solar cells
Greulich, J.; Thaidigsmann, B.; Rein, S.
Journal Article
2014The BOSCO cell concept: Bifacial operation with double-sided collection
Fertig, F.; Krauß, K.; Greulich, J.; Clement, F.; Biro, D.; Preu, R.; Rein, S.
Conference Paper
2014The BOSCO solar cell - a both sides collecting and contacted structure
Fertig, F.; Krauß, K.; Greulich, J.; Clement, F.; Biro, D.; Preu, R.; Rein, S.
Journal Article
2014The BOSCO Solar Cell: Double-sided Collection and Bifacial Operation
Fertig, F.; Krauß, K.; Greulich, J.; Clement, F.; Biro, D.; Preu, R.; Rein, S.
Journal Article
2014The BOSCO solar cell: Simulation and experiment
Fertig, F.; Greulich, J.; Krauss, K.; Clement, F.; Biro, D.; Preu, R.; Rein, S.
Journal Article
2014Efficiency potential simulation for an industrially feasible LFC-PERC concept with sensitivity analysis on crucial cell parameters
Wöhrle, N.; Greulich, J.; Graf, M.; Hermle, M.; Rein, S.
Conference Paper
2014Implementation of Fermi-Dirac statistics and advanced models in PC1D for precise simulations of silicon solar cells
Haug, H.; Kimmerle, A.; Greulich, J.; Wolf, A.; Stensrud Marstein, E.
Journal Article
2014Influence of rear-side passivation on solar cell performance of bosco solar cells
Krauß, K.; Fertig, F.; Greulich, J.; Clement, F.; Biro, D.; Preu, R.; Rein, S.
Conference Paper
2014Inline quality control of passivation stacks in high-efficiency silicon solar cell concepts: Thickness determination from spectro-photometry
Greulich, J.; Wöhrle, N.; Krieg, A.; Rein, S.
Conference Paper
2014Optical modelling of the front surface for honeycomb-textured silicon solar cells
Volk, A.-K.; Glover, W.; Greulich, J.; Gutscher, S.; Wolke, W.; Zimmer, M.; Rentsch, J.; Reinecke, H.
Conference Paper
2014Short-circuit current density imaging of crystalline silicon solar cells via lock-in thermography: Robustness and simplifications
Fertig, F.; Greulich, J.; Rein, S.
Journal Article
2014Simulation and characterization of novel large-area silicon solar cells for industrial production
Greulich, Johannes Michael
Dissertation
2014Simulation of luminescence intensity combining PC1D electrical simulation with analytical optical models
Höffler, H.; Greulich, J.; Haunschild, J.; Rein, S.
Conference Paper
2014Spatially resolved determination of the short-circuit current density of silicon solar cells via lock-in thermography
Fertig, F.; Greulich, J.; Rein, S.
Journal Article
2014Surface recombination parameters of interdigitated-back-contact silicon solar cells obtained by modeling luminescence images
Padilla, M.; Höffler, H.; Reichel, C.; Chu, H.; Greulich, J.; Rein, S.; Warta, W.; Hermle, M.; Schubert, M.C.
Journal Article
2013Anti-reflection-coating thickness measurements on textured silicon surfaces: Evaluation and accuracy of different measurement techniques
Krieg, A.; Greulich, J.; Tondorf, M.; Rein, S.
Conference Paper
2013Numerical power balance and free energy loss analysis for solar cells including optical, thermodynamic, and electrical aspects
Greulich, J.; Höffler, H.; Würfel, U.; Rein, S.
Journal Article
2013Parameterization of free carrier absorption in highly doped silicon for solar cells
Rüdiger, M.; Greulich, J.; Richter, A.; Hermle, M.
Journal Article
2013A predictive optical simulation model for the rear surface roughness of passivated silicon solar cells
Wöhrle, M.; Greulich, J.; Schwab, C.; Glatthaar, M.; Rein, S.
Journal Article
2013Recombination and optical properties of wet chemically polished thermal oxide passivated Si surfaces
Schwab, C.; Wolf, A.; Graf, M.; Wöhrle, N.; Greulich, J.; Kühnhold, S.; Kästner, G.; Biro, D.; Preu, R.
Journal Article
2013Stability of the regeneration of the boron-oxygen complex in silicon solar cells during module integration
Fertig, F.; Greulich, J.; Broisch, J.; Biro, D.; Rein, S.
Journal Article
2012Aerosol jet printed grid for ITO-free inverted organic solar cells
Kopola, P.; Zimmermann, B.; Filipovic, A.; Schleiermacher, H.F.; Greulich, J.; Rousu, S.; Hast, J.; Myllylä, R.; Würfel, U.
Journal Article
2012Comparison of analytical and numerical models for the optimization of c-Si solar cells' front Metallization
Greulich, J.; Fellmeth, T.; Glatthaar, M.; Biro, D.; Rein, S.
Journal Article
2012Loss analysis and efficiency potential of p-type MWT-PERC solar cells
Thaidigsmann, Benjamin; Greulich, Johannes; Lohmüller, Elmar; Schmeißer, Simon; Clement, Florian; Wolf, Andreas; Biro, Daniel; Preu, Ralf
Journal Article
2012Modelling of physically relevant features in photoluminescence images
Demant, M.; Greulich, J.; Glatthaar, M.; Haunschild, J.; Rein, S.
Journal Article
2012Modelling of silicon solar cells by using an extended two-diode-model approach
Fellmeth, T.; Greulich, J.; Clement, F.; Biro, D.
Conference Paper
2012MWT solar cell processing by use of isishape® solar etch® SiD for rear contact and edge isolation
Spribille, A.; Greulich, J.; Lohmüller, E.; Clement, F.; Specht, J.; Biro, D.; Preu, R.; Doll, O.; Tüshaus, C.; Stockum, W.; Köhler, I.
Conference Paper
2012Optical modeling of the rear surface roughness of passivated silicon solar cells
Greulich, J.; Wöhrle, N.; Glatthaar, M.; Rein, S.
Journal Article
2012Quantifying the effect of minority carrier diffusion and free carrier absorption on photoluminescence bulk lifetime imaging of silicon bricks
Mitchell, B.; Greulich, J.; Trupke, T.
Journal Article
2012A review and comparison of one-and two-dimensional simulations of solar cells featuring selective emitters
Greulich, J.; Jäger, U.; Rein, S.; Preu, R.
Journal Article
2012Separation of series resistance and space charge region recombination in crystalline silicon solar cells from dark and illuminated current-voltage characteristics
Greulich, J.; Glatthaar, M.; Rein, S.
Journal Article
2011Intrinsic effects of double side collecting silicon solar cells
Greulich, J.; Glatthaar, M.; Fertig, F.; Clement, F.; Thaidigsmann, B.; Fallisch, A.; Biro, D.; Rüdiger, M.; Hermle, M.; Rein, S.
Conference Paper
2011New measurement method for the investigation of space charge region recombination losses induced by the metallization of silicon solar cells
Hoenig, R.; Glatthaar, M.; Clement, F.; Greulich, J.; Wilde, J.; Biro, D.
Conference Paper
2010Characterization and optimization of laser edge isolation
Gutscher, S.; Knorz, A.; Gundel, P.; Greulich, J.; Preu, R.
Conference Paper
2010Development and modelling of crystalline silicon based metal wrap through (MWT) solar cells
Fellmeth, T.; Meyer, K.; Greulich, J.; Clement, F.; Biro, D.; Preu, R.; Menkoe, M.; Lahmer, D.; Krokoszinski, H.-J.
Conference Paper
2010Evaluating luminescence based voltage images of silicon solar cells
Glatthaar, M.; Haunschild, J.; Zeidler, R.; Demant, M.; Greulich, J.; Michl, B.; Warta, W.; Rein, S.; Preu, R.
Journal Article
2010Fill factor analysis of solar cells' current-voltage curves
Greulich, J.; Glatthaar, M.; Rein, S.
Journal Article
2009JV characteristics of industrial silicon solar cells: Influence of distributed series resistance and shockley read hall recombination
Greulich, J.; Glatthaar, M.; Krieg, A.; Emanuel, G.; Rein, S.
Conference Paper
This publication list has been generated from the publication database Fraunhofer-Publica.