Andreas A. Brand

Head of Team Laser Process Development & Metrology, Division PV Production Technology and Quality Assurance

Research focus

  • Development of laser material processes of semiconductors, dielectrics and metals
  • Optical Metrology
  • Optimization of crystalline silicon solar cell
  • Ultrafast laser regeneration of boron oxygen defects
  • High throughput industrial laser processes for solar cell manufacturing
  • Data analysis and modelling 

Short biography

since 2017 Head of Team Laser Process Development & Metrology, Fraunhofer ISE
since 2011 PhD Student "laser structuring processes for crystalline silicon solar cells", Fraunhofer ISE
2008-2011 Tribology Research, Fraunhofer Institute for Mechanics of Materials IWM
2004/2005 Honours in Physics, UWA Perth
Research Assistant, Fraunhofer Institute for Laser Technology ILT

Awards & outstanding achievements

2002-2008 Scholarship Dr. Berg & Zangerle
2001 Awards from the German Secretary of Economy & VDI for innovative work in the field of Hydrogen Fuel Cells


YearTitle/AuthorDocument Type
2020Evaluating a Procedure to Align Local Laser Doping and Metallization
Weber, J.; Lohmüller, E.; Gutscher, S.; Brand, A.A.
Journal Article
2020Laser Ablation and Ni/Cu Plating Approach for Tunnel Oxide Passivated Contacts Solar Cells with Variate Polysilicon Layer Thickness: Gains and Possibilities in Comparison to Screen Printing
Arya, V.; Steinhauser, B.; Grübel, B.; Schmiga, C.; Bay, N.; Brunner, D.; Passig, M.; Brand, A.A.; Kluska, S.; Nekarda, J.
Journal Article
2020Laser Metal Bonding (LMB) - low impact joining of thin aluminum foil to silicon and silicon nitride surfaces
John, O.; Paschen, J.; Rose, Angela de; Steinhauser, B.; Emanuel, G.; Brand, A.A.; Nekarda, J.
Journal Article
2020Plating for Passivated-Contact Solar Cells
Kluska, S.; Hatt, T.; Grübel, B.; Cimiotti, G.; Schmiga, C.; Arya, V.; Steinhauser, B.; Feldmann, F.; Bartsch, J.; Goraya, B.S.; Nold, S.; Brand, A.A.; Nekarda, J.; Glatthaar, M.; Glunz, S.W.
Journal Article
2020Plating on TOPCon as a Way to Reduce the Fabrication Costs of i-TOPCon Solar Cells
Steinhauser, B.; Grübel, B.; Nold, S.; Arya, V.; Schmiga, C.; Kluska, S.; Brand, A.A.; Feldmann, F.; Bay, N.; Gay, X.; Passig, M.; Glatthaar, M.
Conference Paper
2020Review and Recent Development in Combining Photoluminescence- and Electroluminescence-Imaging with Carrier Lifetime Measurements via Modulated Photoluminescence at Variable Temperatures
Höffler, H.; Schindler, F.; Brand, A.; Herrmann, D.; Eberle, R.; Post, R.; Kessel, A.; Greulich, J.; Schubert, M.C.
Conference Paper
2020A Scanning Spreading Resistance Microscopy Study on a Laser-Doped Selective Phosphorous Emitters
Weber, J.; Brand, A.A.
Journal Article
2019Automated Pump-Probe Microscope to Observe Laser Ablation on a Picosecond Scale
Meyer, F.; Böhler, M.; Brand, A.A.; Nekarda, J.F.
Conference Paper
2019Contactless determination of base resistivity on silicon wafers with highly doped surfaces
Höffler, H.; Brand, A.A.; Wirtz, W.; Greulich, J.
Journal Article
2019FoilMet® - Connect: A New Rear Metallization Upgrade for PERC and other Cell Concepts
Paschen, Jan Tobias; Emanuel, Gernot; Brand, Andreas; Fellmeth, Tobias; Rose, Angela de; John, Oliver; Nekarda, Jan
Conference Paper
2019New Approach for a Combined Process of an Ultrafast Boron-Oxygen Defect Regeneration and Thermal Contact Treatment of Ni/Cu/Ag Plated Solar Cells
Roder, S.; Arya, V.; Mir, H.; Grübel, B.; Kluska, S.; Bay, N.; Pysch, D.; Krauß, K.; Brand, A.; Nekarda, J.
Conference Paper
2019Non-Destructive Approach for Measuring Base Resistivity of Emitter-Diffused, Partially-Processed Wafers Using Temperature-Stage QSSPC
Kuruganti, V.; Haunschild, J.; Brand, A.; Al-Hajjawi, S.; Rein, S.; Glunz, S.W.
Conference Paper
2019A Novel TLM Analysis for Solar Cells
Mir, H.; Arya, V.; Höffler, H.; Brand, A.
Journal Article
2019Numerical Simulations of Photoluminescence for the Precise Determination of Emitter Contact Recombination Parameters
Herrmann, D.; Lohmüller, S.; Höffler, H.; Fell, A.; Brand, A.A.; Wolf, A.
Journal Article
2019Precise Selective Doping and Metallization for Next-Generation PERC Technology: Presentation held at 13th International Photovoltaic Power Generation and Smart Energy Exhibition & Conference, SNEC 2019, Shanghai, China (R.O.), June 4 - June 6, 2019
Keding, R.; Efinger, R.; Lohmüller, E.; Jahn, M.; Fellmeth, T.; Messmer, M.; Meier-Meybrunn, S.; Horzel, J.; Lohmüller, S.; Weber, J.; Demant, M.; Lorenz, A.; Saint-Cast, P.; Brand, A.A.; Nekarda, J.; Clement, F.; Greulich, J.; Preu, R.; Pickrell, M.; Hermans, J.
2018All Copper NICE Modules
Reinwand, D.; Pysch, D.; Bay, N.; Burschik, J.; Kuehnlein, H.H.; Madon, F.; Einhaus, R.; Brand, A.; Arya, V.; Smith, B.; Richter, D.; Kray, D.
Conference Paper
2018Challenges for the Quantification of Metal Induced Recombination Losses
Herrmann, D.; Lohmüller, S.; Höffler, H.; Fell, A.; Brand, A.A.; Wolf, A.
Conference Paper
2018Impact of solidification dynamics on crystal properties of silicon molten by a nanosecond laser pulse
Meyer, F.; Büchler, A.; Brand, A.A.; Dasa, M.K.; Nekarda, J.F.; Preu, R.
Journal Article
2018Improvement of Solar Cell Efficiencies for Ultrashort-Pulse Laser Contact Opening with Ni-Cu Plated Contacts by Optimized LCO-FFO Processing Order
Arya, V.; Gutscher, S.; Kluska, S.; Meyer, F.; Cimiotti, G.; Nekarda, J.; Brand, A.A.
Conference Paper
2018Large Area TOPCon Technology Achieving 23.4% Efficiency
Steinhauser, B.; Feldmann, F.; Polzin, J.-I.; Tutsch, L.; Arya, V.; Grübel, B.; Fischer, A.; Moldovan, A.; Benick, J.; Richter, A.; Brand, A.A.; Kluska, S.; Hermle, M.
Conference Paper
2018Laser-Doped Selective Emitter - Process Development and Speed-Up
Weber, J.; Gutscher, S.; Lohmüller, S.; Lohmüller, E.; Brand, A.A.
Conference Paper
2018Optimized adhesion of plated silicon solar cell contacts by F2-based dry atmospheric pressure nano-roughening
Büchler, A.; Kafle, B.; Weber, J.; Meyer, F.; Brand, A.A.; Maier, A.; Hofmann, M.; Kluska, S.; Bartsch, J.; Glatthaar, M.
Journal Article
2018Simulations on Laser-Phosphorous-Doped Selective Emitters
Weber, J.; Lohmüller, S.; Lohmüller, E.; Wasmer, S.; Nekarda, J.; Brand, A.A.
Conference Paper
2017Benefits of different process routes for industrial direct front side plating
Bay, N.; Brand, A.A.; Büchler, A.; Burschik, J.; Kluska, S.; Kuehnlein, H.H.; Passig, M.; Pysch, D.; Sieber, M.
Conference Paper
2017Comparison of line-wise pl-imaging and area-wise pl-imaging
Höffler, H.; Dost, G.; Brand, A.; Haunschild, J.; Schremmer, H.; Bergmann, A.
Journal Article
2017Easy plating - a simple approach to suppress parasitically metallized areas in front side Ni/Cu plated crystalline Si solar cells
Kluska, S.; Büchler, A.; Bartsch, J.; Grübel, B.; Brand, A.A.; Gutscher, S.; Cimiotti, G.; Nekarda, J.; Glatthaar, M.
Journal Article
2017Easy plating - study on contact interface properties of parasitic plating-free Ni/Cu solar cells
Grübel, B.; Büchler, A.; Kluska, S.; Bartsch, J.; Cimiotti, G.; Brand, A.A.; Glatthaar, M.
Conference Paper
2017Evaluation of TOPCon technology on large area solar cells
Feldmann, F.; Steinhauser, B.; Arya, V.; Büchler, A.; Brand, A.A.; Kluska, S.; Hermle, M.; Glunz, S.W.
Conference Paper
2017Experimental verification of internal resistance moldels for PERT-type solar cells
Meier, S.; Unmüßig, S.; Brand, A.; Saint-Cast, P.; Fellmeth, T.; Wolf, A.; Glunz, S.
Journal Article
2017How to Realize Solar Cells with Laser Structured Plated Ni-Cu-Contacts with Excellent Adhesion and High Fill-Factors without Parasitic Plating
Büchler, A.; Kluska, S.; Bartsch, J.; Grübel, B.; Brand, A.A.; Gutscher, S.; Glatthaar, M.
Conference Paper
2017Interface oxides in femtosecond laser structured plated Ni-Cu-Ag contacts for silicon solar cells
Büchler, A.; Kluska, S.; Meyer, F.; Brand, A.A.; Cimiotti, G.; Bartsch, J.; Glatthaar, M.
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
2017Mesa Separation of GaInP Solar Cells by Picosecond Laser Ablation
Weber, J.; Klinger, V.; Brand, A.; Gutscher, S.; Wekkeli, A.; Mondon, A.; Oliva, E.; Dimroth, F.
Journal Article
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
2017Ultrafast in-line capable regeneration process for preventing light induced degradation of boron-doped p-type Cz-silicon PERC solar cells
Brand, A.; Krauß, K.; Wild, P.; Schörner, S.; Gutscher, S.; Roder, S.; Rein, S.; Nekarda, J.
Conference Paper
2017Verfahren und Vorrichtung zum Stabilisieren einer photovoltaischen Silizium-Solarzelle
Nekarda, Jan; Brand, Andreas; Rein, Stefan; Krauß, Karin; Fertig, Fabian
2017Vorrichtung und Verfahren zur Bearbeitung eines Halbleitersubstrats mittels Laserstrahlung
Nekarda, Jan; Brand, Andreas; Graf, Martin
201620% efficient n-type Cz-Si MWT solar cells with adjustable reverse behavior
Lohmüller, E.; Werner, S.; Maus, S.; Brand, A.; Jäger, U.; Clement, F.
Journal Article
2016Fast Regeneration Process to Avoid Light-Induced Degradation in Multicrystalline Silicon Solar Cells
Krauß, K.; Brand, A.; Fertig, F.; Rein, S.; Nekarda, J.
Journal Article
2016High-efficiency n-type silicon solar cells: Advances in PassDop technology and NiCu plating on boron emitter
Steinhauser, B.; Kamp, M.; Brand, A.A.; Jäger, U.; Bartsch, J.; Benick, J.; Hermle, M.
Journal Article
2016Optimizing Adhesion of Laser Structured Plated Ni-Cu Contacts with Insights from Micro Characterization
Büchler, A.; Kluska, S.; Bartsch, J.; Cimiotti, G.; Brand, A.A.; Schubert, M.C.; Glatthaar, M.
Conference Paper
2016Simplified fabrication of n-type Cz-Si HIP-MWT+ solar cells with 20% efficiency using laser structuring
Lohmüller, E.; Werner, S.; Maus, S.; Brand, A.; Jäger, U.; Nekarda, J.; Clement, F.
Journal Article
2015Analysis and performance of dispensed and screen printed front side contacts at cell and module level
Rodriguez, C.; Pospischil, M.; Padilla, A.; Kuchler, M.; Klawitter, M.; Geipel, T.; Padilla, M.; Fellmeth, T.; Brand, A.; Efinger, R.; Linse, M.; Gentischer, H.; König, M.; Hörteis, M.; Wende, L.; Doll, O.; Clement, F.; Biro, D.
Conference Paper
2015Electrical and Mechanical Properties of Plated Ni/Cu Contacts for Si Solar Cells
Kluska, S.; Bartsch, J.; Büchler, A.; Cimiotti, G.; Brand, A.A.; Hopman, S.; Glatthaar, M.
Conference Paper
2014Laserbasiertes Verfahren und Bearbeitungstisch zur lokalen Kontaktierung eines Halbleiterbauelements
Nekarda, Jan; Rodofili, Andreas; Brand, Andreas; Graf, Martin; Preu, Ralf
2014Micro characterization and imaging of spikes in nickel plated solar cells
Büchler, A.; Kluska, S.; Brand, A.; Geisler, C.; Hopman, S.; Glatthaar, M.
Journal Article
2014Optimizing Fine Line Dispensed Contact Grids
Pospischil, M.; Fellmeth, T.; Brand, A.; Nold, S.; Kuchler, M.; Klawitter, M.; Gentischer, H.; Clement, F.; Biro, D.; König, M.; Hörteis, M.; Wende, L.; Doll, O.; Zengerle, R.
Journal Article
2014Plated Nickel-Copper contacts on c-Si. From microelectronic processing to cost effective silicon solar cell production
Mondon, A.; Bartsch, J.; Kamp, M.; Brand, A.; Steinhauser, B.; Bay, N.; Horzel, J.; Glatthaar, M.; Glunz, S.W.
Conference Paper
2014Reduction of Picosecond Laser Ablation Threshold and Damage Via Nanosecond Pre-Pulse for Removal of Dielectric Layers on Silicon Solar Cells
Brand, A.; Meyer, F.; Nekarda, J.-F.; Preu, R.
Journal Article
2014Verfahren zur Ablation einer Schicht
Brand, Andreas; Nekarda, Jan
2013Laser assisted honeycomb-texturing on multicrystalline silicon for industrial applications
Volk, A.-K.; Gutscher, S.; Brand, A.; Wolke, W.; Zimmer, M.; Reinecke, H.
Conference Paper
2013Multifunctional PECVD layers: Dopant source, passivation, and optics
Seiffe, J.; Pillath, F.; Trogus, D.; Brand, A.; Savio, C.; Hofmann, M.; Rentsch, J.; Preu, R.
Journal Article
2012Multifunctional PECVD layers: Dopant source, passivation, and optics
Seiffe, J.; Pillath, F.; Trogus, D.; Brand, A.A.; Savio, C.; Hofmann, M.; Rentsch, J.
Conference Paper
2012Nanosecond laser annealing to decrease the damage of picosecond laser ablation of anti-reflection layers on textured silicon surfaces
Brand, A.; Knorz, A.; Zeidler, R.; Nekarda, J.-F.; Preu, R.
Conference Paper
This publication list has been generated from the publication database Fraunhofer-Publica.