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Dr. Hartmut Nussbaumer

Dr. Hartmut Nussbaumer

Dr. Hartmut Nussbaumer
ZHAW School of Engineering
Forschungsschwerpunkt Photovoltaik Module
Technikumstrasse 9
8400 Winterthur

+41 (0) 58 934 47 99
hartmut.nussbaumer@zhaw.ch

Personal profile

Position at the ZHAW

Senior Lecturer Photovoltaic
Head of PV module Group
Coordinator platform Photvoltaics

https://zhaw.ch/iefe

Expertise and research interests

Photovoltaic module and production Technology
Photovoltaic systems with lowest LCOE
BIPV

Educational background

Diploma in Physics
PhD
Additional courses:

CAS didactics
Mangement of enterprises, head of R&D, head of production
Project management

Research stay abroad:
AT&T Bell Labs, New Jersey
Eurosolare SPA, Itly, postdoc, stipendiary

Professional milestones

CTO RENA GmbH
Managing Director centrotherm Photovoltaics Technology GmbH
Managing Director sunways Production GmbH and head of Technology sunways AG

Membership of networks

Projects

Publications and conference contributions

Publications before appointment at the ZHAW

[1] G. Willeke, H. Nussbaumer, H. Bender and E. Bucher, „A simple effective light trapping technique for polycrystalline silicon solar cells“, Solar Energy Materials and Solar Cells, 26, 1992, p. 345
[2] G. Willeke, H. Nussbaumer, H. Bender and E. Bucher, „Mechanical texturization of multicrystalline silicon using a conventional dicing saw and bevelled blades“, Proceedings of the 11th European Photovoltaic Solar Energy Conference, Montreux, Switzerland, 1992, p. 480
[3] P. T. Landsberg, H. Nussbaumer and G. Willeke, „Band-band impact ionization and solar cell efficiency“, J. Appl. Phys. 74, 1993, p. 1451
[4] H. Bender, J. Szlufcik, H. Nussbaumer, G. Palmers, O. Evrard, J. Nijs, R. Mertens, E. Bucher and G. Willeke, „Polycrystalline silicon solar cells with a mechanically formed texturization“, Appl. Phys. Lett. 62, 1993, p. 2941
[5] D. Brason, L. C. Feldman, M. L. Green, K. Krisch, W. Lennard, W.-C. Liang, L. Manchanda, N. Moriya, H. Nussbaumer, H. Tang, G. Weber and B. Weir, „Determination of nitrogen content in N2O- grown oxinitride films by a nuclear reaction technique“, presented at the 24th IEEE Semiconductor Interface Specialists Conference, 1993
[6] H. Nussbaumer, G. Willeke and E. Bucher, „Optical behavior of textured silicon“, J. Appl. Phys. 75, 1994, p. 2202
[7] H. Bender, H. Nussbaumer, G. Willeke and E. Bucher, „A comparison of SIPOS and diffused emitters in mechanically textured multicrystalline silicon solar cells“, Proceedings of the 12th European Photovoltaic Solar Energy Conference, Amsterdam, Netherlands, 1994, p. 747
[8] H. Nussbaumer, G. Willeke and E. Bucher, „Self-supporting silicon sheet prepared by zone melting of silicon powder on reusable substrates“, Proceedings of the 13th European Photovoltaic Solar Energy Conference, Nice, France, 1995, p. 1554
[9] B. E. Weir, H. Nussbaumer, K. S. Krisch, D. Monroe, M.-T. Tang, K. W. Evans-Lutterodt, M. L. Green, D. Brasen, L. Manchanda, „Barrier height measurements on O2 and N2O gate dielectrics“, presented at the 25th IEEE Semiconductor Interface Specialists Conference, 1995
[10] H. Nussbaumer, V. R. Nacci, G. Freda, G. Ginocchietti, C. Bucci, F. Ferrazza, C. Marckmann, C. Gerhards, R. Tölle, P. Fath and G. Willeke, „Progress in industrial scale produced mechanically V-grooved multicrystalline silicon solar cells“, Proceedings of the 14th European Photovoltaic Solar Energy Conference, Barcelona, Spain, 1997, p. 819
[11] B. Bitnar, R. Glatthaar, S. Keller, M. Spiegel, P. Fath, G. Willeke, E. Bucher, F. Deurinckx, J. Szlufcik, J. Nijs, R. Mertens, H. Nussbaumer, F. Ferrazza, „Investigation of the passivation properties of PECVD-silicon-nitride layers on silicon solar cells“, Proceedings of the 14th European Photovoltaic Solar Energy Conference, Barcelona, Spain, 1997, p. 1491
[12] G. Martinelli, M. Carotta, A. L. Endrös, H. Nussbaumer and L. Modica, „A study of the mechanical strength on large grain and three-grain thin silicon wafers“, Proceeding of the 14th European Photovoltaic Solar Energy Conference, Barcelona, Spain, 1997, p. 778
[13] M. Acciarri, V. Longoni, S. Pizzini, H. Nussbaumer and F. Ferrazza, „Determination of the compensation ratio and its effect on the electrical properties in multicrystalline silicon for solar cells production“, Proceedings of the 14th European Photovoltaic Solar Energy Conference, Barcelona, Spain, 1997, p. 754
[14] H. Nussbaumer, F. P. Baumgartner, G. Willeke and E. Bucher, „Hall mobility minimum in polycrystalline silicon“, J. of Appl. Physics, 1997
[15] M. Spiegel, R. Tölle, C. Gerhards, H. Nussbaumer, C. Marckmann, P. Fath, G. Willeke, E. Bucher, „Successful Implementation of hydrogen-passivation into an industrial low-cost mc-silicon solar cell process“, presented at the 26th IEEE Photovoltaic Specialists Conference, 1997, Anaheim, California, USA
[16] M. Spiegel, H. Nussbaumer, M. Roy, F. Ferrazza, S. Narayanan,P. Fath, G. Willeke, E. Bucher, „Successful implementation of microwave induced remote hydrogen-plasma passivation into a standard industrial solar cells production line“, Proceedings to the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, Vienna, Austria, 1998, p. 1543
[17] H. Nussbaumer, R. Burkhardt, „Die POWER Solarzelle: Neuester Stand, Eigenschaften und Anwendbarkeit“, Konferenzband zum 14. Symposium Photovoltaische Solarenergie, 1999, S. 275
[18] H. Nussbaumer, R. Burkhardt, „New possibilities for PV integration in buildungs using the new POWER solar cell“, Proceedings to the 16th European Solar Energy Conference, 2000, Glasgow, Scotland
[19] P. Fath, H. Nussbaumer, R. Burkhardt, „Review of the production of semitransparent crystalline silicon POWER solar cells” presented at the PV conference in Korea 2001
[20] H. Nussbaumer, „New Possibilities for the creation of solar facades”, 6th European Solar Energy in Architecture and Urban Planning, Bonn, 2001, S. 266
[21] H. Nussbaumer, P. Fath, U. Rosentreter, „Die transparente Solarzelle: eine neue Technologie“, Gestalten mit Solarzellen : Photovoltaik in der Gebäudehülle / Susanne Rexrodth (Hrsg.).- Heidelberg : Müller, 2002, ISBN 3-7880-7700-X, S. 219
[22] M. Klenk, S. Keller, L. Weber, C. Marckmann, A. Boueke, H. Nussbaumer, P. Fath, R. Burkhardt, „Investigation of the Hot Spot Behaviour and Formation in Crystalline Silicon POWER Solar Cells” ; PV Konferenz in Rom 2002
[23] Gestalten mit Solarzellen : Photovoltaik in der Gebäudehülle / Susanne Rexroth.- Heidelberg : Müller, 2002, ISBN 3-7880-7700-X, „Die transparente Solarzelle- eine neue Technologie“, H. Nussbaumer, P. Fath, U. Rosentreter, S. 219
[24] W. Jooss, M. Klenk, J. Isenbart, S. Keller, C. Marckmann, L. Weber, P. Fath, A. Boueke, H. Nussbaumer, R. Burkhardt, „Recent Results on semitransparent POWER cells”; PV World conference, Osaka, Japan, 2003

[25] H. Haverkamp, H. Knauss, E. Rueland, P. Fath,W. Jooss, M. Klenk, C. Marckmann, L. Weber, H. Nussbaumer, H. Burkhardt, „ Advancements in the Development of Back Contact Cell Manufacturing”; Proceedings to the 19th European Photovoltaic Solar Energy Conference, 2004, Paris, France, p. 967
[26] H. Knauss, H. Haverkamp, W. Jooss, S. Steckemetz, H. Nussbaumer, „ Industrially Applicable Metallisation Wrap Through Solar Cell Process Resultin in Efficiencies Exceeding 16%”; 21st European Photovoltaic Solar Energy Conference, 2006, p. 967
[27] López E.; Beese H.; Mäder G.; Dani I.; Hopfe V.; Heintze M.; Möller R.; Wanka H.; Kirschmann M.; Frenck J.; Poruba A.; Barinka R.; Nussbaumer H.; Dahl R. ”New Developments in Plasma Enhanced Chemical Etching at Atmospheric Pressure for Crystalline Silicon Wafer Processing”, 22nd European Photovoltaic Solar Energy Conference, 3-7 September 2007, Milan, Italy, p. 1484

[28] P.J. Rostan, S. Keller, A. Hauser, H. Nussbaumer, I. Melnyk, P. Fath, J. Haase, A. Eder, A. Pollak, R. Hendel, “New Generation Production Technology For Cystalline Silicon Solar Cells”, 22nd European Photovoltaic Solar Energy Conference, 2007, Milan, Italy, p. 1539

[29] H. Nussbaumer, D. Biro, H. Haverkamp, K. Bothe „Forschung für neue Technologien und ihre Wechselwirkung mit der Industrie- vom Mittelständler zum Global Player“, FVS BVS Themen 2007, p. 108
[30] Lopez, E.; Dresler, B.; Mäder, G.; Dani, I.; Hopfe, V.; Kaskel, S.; Heintze, M.; Möller, R.; Wanka, H.; Kirschmann, M.; Frenck, J.; Poruba, A.; Barinka, R.; Dahl, R.; Nussbaumer, H., „Plasma enhanced CVD and plasma chemical etching at atmospheric pressure for continuous processing of crystallien silicon solar wafers“, Society of Vacuum Coaters -SVC-, Albuquerque/NM:Society of Vacuum Coaters. Proceedings of the 51st Annual Technical Conference, Chicago, IL, USA, 2008, p.622
[31] W. Saule, F. Delahaye, S. Queisser,E. Wefringhaus, J. Schweckendiek, H. Nussbaumer, “High Efficiency Inline Diffusion Process with Wet-Chemical Emitter Etch-Back”, Proceedings to the 24th European Solar Energy Conference, , 2009, Hamburg, Germany, p. 1855
[32] J. Krümberg, I. Melnyk, M. Schmidt, M. Michel, T. Fidler, M. Kagerer, P. Fath, L. Heiliger and H. Nussbaumer, “New Innovative Alkaline Texturing Process for CZ Silicon Wafers”, Proceedings to the 24th European Solar Energy Conference, , 21-25 September 2009, Hamburg, Germany, p. 1748
[33] H.H. Kuehnlein, N. Koesterke, G. Cimiotti, N. Bay, H. Nussbaumer, A. Pauchard, B. Richerzhagen, F. Granek, C. Fleischmann, S. Hopman, K. Mayer, M. Mesec, “Next Generation of Front Grid Metallization: LCP Selective Emitter Combined with Ni-Cu-Sn Direct Plating on Silicon”, Proceedings to the 24th European Solar Energy Conference, 2009, Hamburg, Germany, p. 1712
[34] H. Nussbaumer, F. Delahaye, W. Saule, D. Nagel, S. Queisser, B. U. Sander, H. Kühnlein, N. Kösterke, N. Bay, G. Cimiotti, A. Eljaouhari, J. Schweckendiek, R. Dechant-Wagner, I. Sen, S. Kleinschmidt, “Wet Chemical Processing in Crystalline Silicon Wafer and Cell Production Today and Tomorrow”, Proceedings to the 24th European Solar Energy Conference, 2009, Hamburg, Germany, p. 1356
[35] H.H. Kuehnlein, N. Koesterke1, G. Cimiotti, E. Hartmannsgruber, N. Buerger, H. Nussbaumer, D. Luetke-Notarp, M. Becker, “>0.4% Absolut Efficiency Gain by Fast Ni-Cu-Sn Electroplating of Solar Cells with Fine Line Printed Contacts by a Single Side Wet Treatment Technology”, Proceedings to the 24th European Solar Energy Conference, , 2009, Hamburg, Germany, p. 282
[36] E.M. Sachs, A.M. Gabor, P. Madden, S. Olibet, H. Gates, A. Ersen, V. Tarasov, D. Harris, K. Passino, F. van Mierlo, S. Queisser, A. Heeren, H. Kühnlein, F. Delahaye, H. Nussbaumer, “1366-Texture and 1366-Metallization: Superior Light Trapping and 30-Micron Fingers for Any Silicon Wafer Type at Low Cost” Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 2010, Valencia, Spain, p. 1475
[37] D. Kray, N. Bay, G. Cimiotti, S. Kleinschmidt, N. Kösterke, A. Lösel, O. Lühn, M. Sailer, A. Träger, H. Kühnlein, H. Nussbaumer, A. Fell, C. Fleischmann, S. Hopman, K. Mayer, M. Mesec, A. Rodofili, F. Granek, S.W. Glunz, E. Müller, P. Sempere, A. Pauchard, B. Richerzhagen, “High-Efficiency Large Area Industrial LCP Selective Emitter Solar Cells Ready for Production”, Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 2010, Valencia, Spain, p. 1896
[38] N. Bay, J. Burschik, G. Cimiotti, N. Fritz, N. Kösterke, D. Kray, A. Lösel, O. Lühn, M. Sieber, A. Träger, H. H. Kühnlein, H. Nussbaumer, “Adhesive One Step Ni/Ag and Ni/Cu/Ag Inline Direct Plating on Laser Processed Selective Emitter Structures”, Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 2010, Valencia, Spain, p. 2183
[39] D. Kray, N. Bay, G. Cimiotti, S. Kleinschmidt, N. Kösterke, A. Lösel, M. Sailer, A. Träger, H. Kühnlein,H. Nussbaumer, C. Fleischmann, F. Granek, “Industrial LCP Selective Emitter Solar Cells With Plated Contacts”, Proceedings to the 35th World Solar Energy Conference, 2010, Honolulu, USA
[40] H. Nussbaumer „Innovator des Jahres“ am Innovationsstandort Nr. 1, 2011, innovation.mfg.de/de/standort/bildung-forschung/forschung-wissenschaft/innovator-des-jahres-am-innovationsstandort-nr-1-1.2214
[41] D. Kray, H. Kühnlein, N. Bay, G. Cimiotti, S. Kleinschmidt, N. Kösterke, A. Lösel, M. Sailer, A. Träger, O. Lühn, H. Nussbaumer, “Self-aligned selective emitter and metallization by RENA”, published by Photovoltaics International 2011, Manufacturing the Solar Future, ISBN 978-0-9565331-1-1, p. 210
[42] M. Glatthaar, D. Kray, N. Bay, J. Burschik, G. Cimiotti, N. Fritz, S. Kleinschmidt, H. Kühnlein, A. Lösel, O. Lühn, H. Nussbaumer, A. Rodofili, R. Sastrawan, M. Sieber, J. Schramm-Moura, A. Träger, “Application of SunsPL for fast laser chemical process development”, Conference Record of the IEEE Photovoltaic Specialists Conference 2011
[43] N. Bay, J. Burschik, G.Cimiotti, N. Fritz, S. Kleinschmidt, M. Sieber, D. Kray,O. Lühn, H. H. Kühnlein, H. Nussbaumer, “Influence of Pretreatment Chemistry on the Performance of Direct Plated Silicon Solar Cells”, Proceedings to the 26th European Solar Energy Conference, 2011, p. 1659
[44] D. Kray, N. Bay, G.Cimiotti, N. Fritz, M. Glatthaar, S. Kleinschmidt, A. Lösel, O. Lühn, J. Schramm-Moura, A. Rodofili, A. Träger, H. Kühnlein, H. Nussbaumer, “Reducing Ag Cost and Increasing Efficiency. Multicrystalline Silicon Solar Cells with Direct Plated Contacts Exceeding 17% Efficiency”, Proceedings to the 26th European Solar Energy Conference, 2011, p. 1199
[45] E. Cornagliotti, A Uruena, J. Horzel, J. John, L. Tous, D. Hendrickx, V. Prajapati, S. Singh, R. Hoyer, F. Delahaye, K. Weise, D. Queisser, H. Nussbaumer and J. Poortmans, “How Much Rear Side Polishing Is Required? A Study on the Impact of Rear Side Polishing in PERC Solar Cells”, Proceedings to the 27th European Solar Energy Conference, 2012, p. 561
[46] R. Sastrawan, F. Aigner, A. Becker, R. Böhme, F. Delahaye, A. Hoffmann, A. Heeren, D. Kray, B. Latzel, D. Pysch, J. Rentsch, W. Saule, C. Schmitt, B. Straub, A. Träger, S. Queisser, Volk. A., L. Zanger, M. Zimmer and H. Nussbaumer, “Combing Laser Doping and Wet Chemical Etch Back for Industrial Selective Emitter Solar Cells”, Proceedings to the 27th European Solar Energy Conference, 2012, p.1563
[47] S. Patzig-Klein, E. Wefringhaus, C. Klein, W. Benko, F. Delahaye, S. Queißer, J. Schweckendiek 1, H. Nussbaumer, “ Overview of wet chemical texturing processes for “cast-mono” silicon materials”, Proceedings to the 27th European Solar Energy Conference, 2012, p.766
[48] Spribille, A.; Hendrichs, M.-S.; Thaidigsmann, B.; Clement, F.; Hädrich, I.; Wiese, M.; Kaufmann, S.; Morf, P.; Gretler, A.; Rueedy, A.; Nussbaumer, H.; Träger, A, „HIP-MWT: Our approach for high performance ribbon based back contact MWT modules with Low CTM losses”, 7th International Photovoltaic Power Generation Conference and Exhibition, SNEC 2013, 2013, Shanghai, China, p.12
[49] H. Nussbaumer, „ Diamond wire sawing, cleaning and texturing”, SNEC 2013, 7th International Photovoltaic Power Generation Conference and Exhibition, SNEC 2013, 2013, Shanghai, China
[50] R. Sastrawan, D. Pysch, M. Bijker, F. Delahaye, B. Dielissen, W. Eipert, X. Gay, R. Görtzen, A. Hoffmann, B. Latzel, M. Lenes, X. Mao, S. Patzig-Klein, X. Qu, B.-U. Sander, C. Schmitt, F.M.M. Souren, A. Träger, K. Weise, S. Yang, H. Nussbaumer, “Implementation of a Multicrystalline ALD-Al2O3-PERC Technology into an Industrial Pilot Production”, Proceedings to the 28th European Solar Energy Conference 2013, Paris, p. 1861
[51] A. Spribille, E. Lohmüller, B. Thaidigsmann, R. Hamid, H. Nussbaumer, F. Clement, R. Preu , “Wet Chemical Single-Side Emitter Etch Back for MWT Solar Cells with Al-BSF and Challenges for via Paste Selection”, Proceedings to the 28th European Solar Energy Conference 2013, Paris, p. 1080
[52] J. Horzel, N. Bay, T. Knarozovski, A. Träger, M. Passig, J. Burschik, M. Sieber, A. Hoffmann, B. Latzel, D. Pysch, C. Schmitt, R. Sastrawan, H.H. Kuehnlein, K. Vosteen, H. Nussbaumer, R. Boehme, H. Schillinger, A. Letize, B. Lee, T. Soederstroem, “Different Concepts of Implementing a Directly Plated Front Side Metallization into Industrial Solar Cell Mass Production” Proceedings to the 28th European Solar Energy Conference 2013, Paris, p. 1374
[53] S. Patzig-Klein, S. Xu ,L. Zanger, J. Wu, B. Zhou, M. Schumann, F. Delahaye, J. Schweckendiek, R. Dechant-Wagner, R. Sastrawan, A. Heeren and H. Nussbaumer, “Advanced processing sequences for diamond wire sawn silicon substrates”, Proceedings to the 28th European Solar Energy Conference 2013, Paris, p. 1761
[54] Juergen Schweckendiek, Ronald Hoyer, Sebastian Patzig-Klein, Franck Delahaye, Gerry Knoch, Hartmut Nussbaumer, "Cleaning in Crystalline Si Solar Cell Manufacturing", Solid State Phenomena, Vol. 195, pp. 283-288, 2013
[55] R. Sastrawan, D. Pysch, C. Schmitt, B. Sander, J. Horzel, O. Voigt, A. Heeren, H. Nussbaumer, S. Keller, P. Fath, X. Mao, X. Qu, S. Yang, I. Melnyk, X. Gay, R. Görtzen, H. Heezen, “Industrial production of multicrystalline silicon solar cells with efficiencies above 18%”,
Proceedings of the SNEC 2014, China
[56] J. Horzel, N. Bay,T. Knarozovski, M. Passig, M. Sieber, J. Burschik, H. Kühnlein, R. Sastrawan, K. Vosteen, H. Nussbaumer, S. Keller, P. Fath, A.Letize, B. Lee, D. Weber, R. Böhme, “Low cost high efficiency metallisation using Ni/Cu based contacts for next generation industrial solar cells”, Proceedings of the SNEC 2014, China
[57] D. Pysch, B. Latzel, C. Schmitt, B.-U. Sander, S. Patzig-Klein, R. Sastrawan, J. Horzel, O. Voigt, A. Heeren & H. Nussbaumer,”Route to 19% Efficient Industrial Production Multi-Crystalline PERC Solar Cells Including a Fast ALD Al2O3 for Rear Side Passivation”, Proceedings to the 29th EU PVSEC 2014, Amsterdam