Person
Prof. Dr. rer. nat. Stefan Kontermann
Vita
Higher education
2005–2009 University of Konstanz, doctoral studies, Ph.D. (Dr. rer. nat.), under Prof. Dr. G. Willeke.
2003–2004 University of Karlsruhe, Physics, Bachelor’s degree in Physics, under Prof. Dr. H. v. Löhneysen.
2002–2003 University of Adelaide, Australia, Physics (Solid State and Lasers), under Prof. Dr. J. Munch.
1999 – 2002 University of Karlsruhe, Physics, intermediate diploma in Physics, under Prof. Dr. C. Klingshirn.
1998 – 1999 University of Karlsruhe, Mechanical Engineering, intermediate diploma in Materials Science, under Prof. Dr. O. Vöhringer.
Professional and research experience, academic background
2015 – today RheinMain University of Applied Sciences, Professor of Technical Optics and Photonics
Head of the “Photonics” research group at the Institute of Microtechnologies; establishment and operation of a laboratory for ultrashort-pulse laser technology; acquisition of external funding for projects in the field of femtosecond laser material functionalization; supervision of doctoral students; lectures in the “Applied Physics” (Master’s) and “Applied Physics” (Bachelor’s), supervision of doctoral dissertations, master’s theses, and bachelor’s theses, management, further development, and reaccreditation of the “Applied Physics (M.Sc.)” program, laser safety officer, chair of the Public Relations Committee.
2010 – 2014 Fraunhofer Heinrich Hertz Institute (HHI), Fiber Optic Sensor Systems Department, Berlin/Goslar
Head of the “Nanomaterials for Energy Conversion” research group: Development of ultrashort-pulse laser processes for fiber-optic sensors and laser functionalization of nanomaterials. Development of adaptive laser pulse shaping using light modulators in ultrashort-pulse laser material processing, project acquisition, patent applications, organization of trade show appearances and conferences, supervision of doctoral and master’s theses. Responsibility for personnel, budget, and projects.
2009 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA, Visiting Researcher,
Study of the optical properties of silicon defects, under the supervision of Prof. Dr. T. Buonassisi
2008 – 2009 PSE AG, Freiburg, Process Engineer, Transfer of photovoltaic technology to the solar industry.
2008 Lawrence Berkeley National Laboratory, Berkeley, California, USA, visiting researcher, TEM microscopy of silver-silicon nanostructures, under the supervision of Dr. C. Kisielowski (2 months).
2007 University of New South Wales, ARC Photovoltaics Centre of Excellence, Sydney, Australia, Visiting Researcher “Photoluminescence Characterization of High-Efficiency Solar Cells” Research group led by Prof. Dr. rer. nat. T. Trupke (3 months).
2005 – 2009 Fraunhofer Institute for Solar Energy Systems (ISE), “Production Technology” Department, “Laser and PVD Processes” Group, Freiburg. Research Associate, development of contact and laser processes for laser-fired-contact solar cells. SEM analysis and simulation of microstructures at metal-semiconductor interfaces.
2003 – 2004 University of Karlsruhe, Department of Physics, Cryostat Technology and Superconductors.
1999 – 2002 University of Karlsruhe, Institute of Materials Science I, Fatigue Testing Laboratory, Materials Testing.
Involvement in academic self-governance and in the academic community
2024 – present Planning, development, and implementation of the international “Applied Physics M.Sc.” program
2019 – present Program Director of the “Applied Physics M.Sc.” master's program
2019 – present Deputy Head of the Physics Department
2016 – present Head of the “Photonics” Research Group
2019 – 2021 Director of the Institute for Microtechnologies (IMtech)
2016 – 2021 Chair of the Public Relations Committee
2015 – present Head of the Laboratory for Technical Optics
2015 – present Laser Safety Officer
2015 – present Self-governance duties (public relations, program development, field trips, conference attendance, trade show participation) at RheinMain University of Applied Sciences
2014 Organization of the innovation forum “Laser Technology in the LED Lighting Industry,” in collaboration with the Lower Saxony Optical Technologies Competence Network “PhotonicNet.”
2013–2014 Contributed to the design, organization, and implementation of the master’s program in “Energy and Materials Physics,” particularly the “Photonics and Energy” module, at Clausthal University of Technology.
2013 – 2014 Preparation of the Fraunhofer spin-off “InfraPV”: technology development of the black silicon solar cell and associated production facility, business plan development, and acquisition of venture capital.
2012 – 2014 German Industry Foundation: Representative of the Clausthal scholarship group.
2012 – 2014 Organization of quality management and annual audits for ISO 9001:2008 certification of the Fraunhofer HHI Department of Fiber Optic Sensor Systems, Goslar.
2011 – present Reviewer for various journals, including Applied Physics Letters, Applied Physics A, Applied Surface Science, Journal of the Electrochemical Society, Journal of Photovoltaics, and Energy Procedia.
2010 – 2014 Co-organizer of the conference for the “Kaiser Friedrich Research Prize.”
2008 – 2010 Conceptualization and execution of the physics event “Do you know? Show!”, Mensabar Freiburg.
2007 – 2010 Juror for Jugend forscht, Freiburg.
Awards, outstanding thesis supervision, and scholarships
2022 Optence Research Award, “Construction and Characterization of a Multi-Wavelength Interferometer for the Visible Spectral Range,” for the supervised master's thesis by Dennis Rosendahl, in collaboration with Ametek GmbH, Luphos Division, Weiterstadt
2021 Young Scientist Award of the 11th High-Level Expert Meeting, “Detection and Compensation of Wavelength Fluctuations Using a Glass Reference Cell,” for the supervised master’s thesis by Sven Thoma, in cooperation with Ametek GmbH, Luphos Division, Weiterstadt.
2020 Optence Sponsorship Award, “Development and Investigation of Process-Optimized Intensity Distributions for Laser Micromachining Using a Diffractive Beam Shaping System,” for the supervised master’s thesis by Patrick McKearney, in cooperation with Pulsar Photonics GmbH, Aachen.
2016 VDI Sponsorship Award “Optimization of the frequency conversion of ultrashort laser pulses in gas-filled hollow-core waveguides,” for the supervised master’s thesis by Mario Hilbig, in cooperation with TU Darmstadt, Prof. T. Halfmann.
2013 “Best Oral Presentation Award” in the “Characterization Methods” category, 39th IEEE PVSC, Tampa, Florida, USA (K.-M. Guenther, T. Gimpel, W. Schade, and S. Kontermann).
2012 Winner of the “Landmark of Ideas” competition, Science category,
Title: “Fraunhofer Project: Tailored Light Pulses.”
2008 “Best Visual Presentation Award,” Advanced Photovoltaics category, 22nd PVSEC, Milan, Italy (E. Pink, T. Trupke, R.A. Bardos, M.D. Abbott, Y. Augarten, and S. Kontermann).
2005 – 2009 Ph.D. fellowship, Foundation of German Industry (sdw), Berlin.
2005 – 2008 Research Fellowship, Freiburg Materials Research Center.
2005 – 2006 Endeavour Europe Award (1-year doctoral fellowship) from the Australian Government (not accepted).
2002 – 2003 Study abroad scholarship (one year) for studies in Australia, Baden-Württemberg Program, International Office, University of Karlsruhe.
2000 – 2004 Scholarship recipient of the Foundation of German Business (sdw), Berlin, study scholarship.
Publikationsliste Prof. Dr. Stefan Kontermann
Bücher und Buchbeiträge
2. S. Kontermann, A. Gabler, A. L. Baumann, and W. Schade,
Tailored Material Functionalization by Shaped Femtosecond Laser Pulses,
in "Laser ablation: Fundamentals, Methods and applications", editors: W. Viöl and S. Wieneke, Nova Science Publishers, Inc., Hauppage, New York. (2015) 63-82, ISBN: 978-1-63482-622-8.
1. S. Kontermann, Characterization and Modeling of Contacting Crystalline Silicon Solar Cells,
Dissertation, Universität Konstanz, 2009, Verlag Dr. Hut, München, ISBN: 978-3-86853-170-1.
Patente
2. W. Schade, A. Gabler, und S. Kontermann, Wärmeübertrager und Verfahren zu dessen Herstellung und Verwendung, Deutsche Patentanmeldung, 25. Juli 2013. Epoline Nr. 800270304, Amtliches Aktenzeichen: 102013214518.7
1. S. Kontermann, W. Schade, C. Winter, Ein System umfassend einen Lichtverteiler und zumindest eine LED-Leuchte sowie ein Verfahren zur Herstellung eines Lichtverteilers, Deutsche Patentanmeldung vom 6.Oktober 2014, Aktenzeichen DE102014220141.1
Artikel in referierten Zeitschriften
28. X. Liu, P. Mc Kearney, S. Schäfer, B. Radfar, Y. Berencén, U. Kentsch, V. Vähänissi, S. Zhou, S. Kontermann, and H. Savin,
Impact of post-ion implantation annealing on Se-hyperdoped Ge,
Applied Physics Letters 125 (2024) 042102. doi: 10.1063/5.0213637
27. S. Schäfer, X. Liu, P. Mc Kearney, S. Paulus, B. Radfar, V. Vähänissi, H. Savin and S. Kontermann,
Effective carrier lifetime in ultrashort pulse laser hyperdoped silicon: Sulfur concentration dependence and practical limitations,
Physica Status Solidi A, 2400132 (2024), doi: 10.1002/pssa.202400132.
26. S. Paulus, S. Schäfer, P. Mc Kearney, T. Niemeyer, M. Seibt, S. Kontermann,
Defect engineering for improved thermal stability of sulfur hyperdoped silicon,
Materials Science in Semiconductor Processing 176 (2024) 108297.
25. P. Mc Kearney, S. Schäfer, X. Liu, S. Paulus, I. Lebershausen, B. Radfar, V. Vähänissi, H. Savin, and S. Kontermann,
Impact of Pulse Duration on the Properties of Laser Hyperdoped Black Silicon,
Advanced Photonics Research (2024) 2300281, 10.1002/adpr.202300281
24. P. Mc Kearney, I. Lebershausen, S. Schäfer, S. Paulus, and S. Kontermann,
Improving the Processing Efficiency of Femtosecond Laser Sulfur Hyperdoping of Silicon by Diffractive Beam Shaping, JLMN-Journal of Laser Micro/Nanoengineering 1 (2023), doi: 10.2961/jlmn.2023.02.2003
23. P. Mc Kearney, S. Schäfer, S. Paulus, M. Roser, F. Piermaier, I. Lebershausen, and S. Kontermann,
Ultrafast laser heating for controlling the optoelectronic properties of sulfur hyperdoped black silicon, Journal of Applied Physics 133 (2023) 013102, doi: 10.1063/5.0130743
22. S. Paulus, M. Roser, P. Mc Kearney, M. Will, S. Schäfer and S. Kontermann,
Classification of different post-hyperdoping treatments for enhanced crystallinity of IR-sensitive femtosecond-laser processed silicon, Semiconductor Science and Technology 38 (2023) 024002, doi: 10.1088/1361-6641/acad93
21. S. Schäfer, P. Mc Kearney, S. Paulus, and S. Kontermann
Analytical model for extracting optical properties from absorptance of femtosecond-laser structured hyperdoped silicon,
Journal of Applied Physics 131 (2022) 243102, doi: 10.1063/5.0094177
20. David Müllers, Jonas Kuhl, and Stefan Kontermann, Nonparaxial optical transfer function for arbitrary illumination in partially coherent imaging systems and the oblique source application,
Journal of the Optical Society A, 39 (2022) 744-758; doi: 10.1364/JOSAA.452462
19. S. Paulus, P. Mc Kearney, F. Völklein, and S. Kontermann, Obtaining simultaneously high crystallinity and sub-bandgap absorption in femtosecond laser hyperdoped black silicon using ion beam etching, AIP Advances 11 (2021) 075014; doi: /10.1063/5.0044678
18. J. Sickel, A. Ahrens, A. L. Baumann, W. Schade, S. Kontermann, and M. Seibt,
Microscopic electronic and structural analysis of femtosecond laser sulfur hyperdoped silicon, Physica Status Solidi A, 1700264 (2017), doi: 10.1002/pssa.201700264.
17. M. Otto, M. Algasinger, H. Branz, B. Gesemann, T. Gimpel, K. Füchsel, T. Käsebier, S. Kontermann, S. Koynov, X. Li, V. Naumann, J. Oh, A. N. Sprafke, J. Ziegler, M. Zilk, and R. B. Wehrspohn,
Black Silicon Photovoltaics,
Advanced Optical Materials 3 (2015) 147-164, doi: 10.1002/adom.201400395.
16. T. Gimpel, K. M. Guenther, S. Kontermann, and W. Schade,
Current-voltage characteristic and sheet resistances after annealing of femtosecond laser processed sulfur emitters for silicon solar cells,
Applied Physics Letters 105 (2014) 053504, doi: 10.1063/1.4892474.
15. K. M. Guenther, T. Gimpel, J. W. Tomm, S. Winter, A. Ruibys, S. Kontermann, and W. Schade,
Excess carrier generation in femtosecond-laser processed sulfur doped silicon by means of sub-bandgap illumination,
Applied Physics Letters 104 (2014) 042107; doi: 10.1063/1.4863439.
14. F. Fattahi Comjani, U. Willer, S.Kontermann, and Wolfgang Schade,
Influence of the metal-semiconductor contact by energy harvesting from vertically aligned ZnO nanowires,
Applied Physics Letters 104 (2014) 143113, doi: 10.1063/1.4871376.
13. P. Saring, A. L. Baumann, B. Schlieper-Ludewig, S.Kontermann, W. Schade, and M. Seibt,
Electronic and structural properties of femtosecond laser sulfur hyperdoped silicon pn-junctions,
Applied Physics Letters 103 (2013) 061904, doi: 10.1063/1.4817726.
12. K. M. Guenther, T. Gimpel, S. Kontermann, and W. Schade,
Investigation of the sulfur doping profile in femtosecond-laser processed silicon,
Applied Physics Letters 102, 202104 (2013); doi: 10.1063/1.4807679.
11. F. Fattahi Comjani, U. Willer, S.Kontermann, and Wolfgang Schade,
Modelling the growth of ZnO nanocombs based on the piezoelectric effect,
AIP Advances 3 (2013) 102102, doi: 10.1063/1.4824616.
10. F. Fattahi Comjani, U. Willer, S.Kontermann, and Wolfgang Schade,
Synthesis of ZnO nanowalls and nanocombs by vapor-liquid-solid method,
Physica Status Solidi A, doi: 10.1002/pssa.201329242 (2013).
9. T. Gimpel, I. Höger, F. Falk, W. Schade, and S. Kontermann,
Electron backscatter diffraction on femtosecond laser sulfur hyperdoped silicon,
Applied Physics Letters 101 (2012) 111911, doi: 10.1063/1.4752454.
8. S. Kontermann, A. Ruf, R. Preu, and G. Willeke,
Simulating the interface morphology of silver thick film contacts on n-type Si-(100) and Si-(111),
Applied Physics Letters 101 (2012) 121907, doi: 10.1063/1.4752228.
7. K. M. Guenther, H. Witte, A. Krost, S. Kontermann, and W. Schade,
Extracting accurate capacitance voltage curves from impedance spectroscopy,
Applied Physics Letters 100 (2012) 042101, doi10.1063/1.3679380.
6. S. Kontermann, R. Preu, and G. Willeke,
Calculating the specific contact resistance from the nanostructure at the interface of silver thick film contacts on n-type silicon,
Applied Physics Letters 99 (2011) 111905, doi :10.1063/1.36353831.
5. S. Kontermann, J. Bauer, and G. Willeke,
Electronic properties of nanoscale silver crystals at the interface of silver thick film contacts on n-type silicon,
Applied Physics Letters 97 (2010) 191910, doi: 10.1063/1.3508950.
4. S. Kontermann, M. Hörteis, A. Ruf, S. Feo, and R. Preu,
Spatially resolved contact resistance measurements on crystalline silicon solar cells,
Physica Status Solidi A 206 (2009) 2866-2871, doi:10.1002/pssa.200925077.
3. S. Kontermann, A.Wolf, D. Reinwand, A. Grohe, D. Biro, and R. Preu,
Optimizing annealing steps for crystalline silicon solar cells with screen printed front side metallization and an oxide passivated rear side with local contacts,
Progress in Potovoltaics 17 (2009) 554-566, doi: 10.1002/pip.919.
2. S. Kontermann, M. Hörteis, M. Kasemann, A. Grohe, R. Preu, E. Pink, and T. Trupke,
Physical understanding of the behavior of silver thick film contacts under annealing conditions,
Solar Energy Materials and Solar Cells 93 (2009) 1630-1635, doi:10.1016/j.solmat.2009.04.019.
1. G. Goll, T. Brugger, M. Marz, S. Kontermann, H.v. Löhneysen, T. Sayles, and M.B. Maple,
Point Contact spectroscopy on heavy-fermion superconductors,
Physica B 378-380 (2006) 665-668.
Konferenzbeiträge mit referiertem und veröffentlichtem Artikel
19. J. Kuhl, D. Müllers, I. Lebershausen, S. Kontermann, Quantitative phase measurement of direct laser written waveguides using differential phase contrast, Proceedings 2021 der 122. Jahrestagung der Deutschen Gesellschaft für Angewandte Optik, Bremen, Germany (2021), ISSN: 1614-8436
18. C. Warneke, J. Kuhl, I. Lebershausen, F. Völklein, and S. Kontermann
Herstellung von Mikrogittern in optischen Gläsern mittels Ultrakurzpulslaserablation,
Proceedings 2019 der 120. Jahrestagung der Deutschen Gesellschaft für Angewandte Optik, Darmstadt, Germany (2019), ISSN: 1614-8436
17. T. Gimpel, K.-M. Guenther, S. Kontermann, and W. Schade,
Experimental Implementation of a silicon wafer tandem solar cell,
Proceedings of the 4th Silicon PV, 's Hertogenbosch, Netherlands (2014).
Energy Procedia 55 (2014 ) 186-189, doi: 10.1016/j.egypro.2014.08.114
16. K.-M. Guenther, T. Gimpel, W. Schade, and S. Kontermann,
Using Impedance Spectroscopy for Enhanced Capacitance-Voltage Measurements on Solar Cells with Multiple Space Charge Regions and a Structured Surface,
Proceedings of the 39th IEEE PVSC, Tampa, Florida, USA, p. in print (2013).
[Best Oral Presentation Award winner]
15. P. Saring, A. L. Baumann, S. Kontermann, W. Schade, and M. Seibt,
Characterization of electrical contacts on silicon (100) after ablation and sulfur doping by femtosecond laser pulses,
Proceedings of Gettering and Defect Engineering in Semiconductor Technology (GaDEST), Oxford, UK, (2013), published in Solid State Phenomena Vols. 205-206 (2014) pp 358-363, doi:10.4028/www.scientific.net/SSP.205-206.358
14. S. Kontermann, A. L. Baumann, T. Gimpel, K.M. Guenther, A. Ruibys, Ulrike Willer, and W. Schade,
Structural and optical property tailoring of black silicon with fs-laser pulses,
MRS Proceedings of the MRS Fall Meeting, Boston, Massachusetts, USA 1405, mrsf11-1405-y03-03, doi:10.1557/opl.2012.20 (2012). [Invited Talk]
13. S. Kontermann, T. Gimpel, A. L. Baumann, K.-M. Guenther, and W. Schade,
Laser Processed Black Silicon for Photovoltaic Applications,
Energy Procedia 27 (2012) 390-395, doi: 10.1016/j.egypro.2012.07.082.
12. K.-M. Guenther, A. L. Baumann, T. Gimpel, S. Kontermann, and W. Schade, Tandem solar cell concept using black silicon for enhanced Infrared absorption, Energy Procedia 27 (2012) 555-560, doi: 10.1016/j.egypro.2012.07.109.
11. A. L. Baumann, T. Gimpel, K.-M. Guenther, P. Saring, M. Seibt, S. Kontermann, and W. Schade, Tailoring the absorption properties of Black Silicon, Energy Procedia 27 (2012) 480-484, doi: 10.1016/j.egypro.2012.07.097.
10. S. Kontermann, A. Ruf, and R. Preu, Atomistic Simulations of the Silicon Surface Structure at the Interface of Silver Thick Film Contacts on n-Type Silicon, MRS Proceedings of the MRS Spring Meeting, San Francisco, California, USA, 1323, mrss11-1323-c03-17 doi:10.1557/opl.2011.821 (2011).
9. T. Gimpel, K.-M. Günther, S. Kontermann, and W. Schade, Study on contact materials for sulfur hyperdoped black silicon, Proceedings of the 37th IEEE PVSC, Seattle, Washington, USA, 002061-002065, doi: 10.1109/PVSC.2011.6186358 (2011).
8. J. Waltermann, K.-M. Günther, S. Kontermann, S.R. Waldvogel, and W. Schade, Electrical and photoelectrical measurements on ZnO-Nanowires coated with PEDOT:PSS for Dye-Sensitized Solar Cells, MRS Proceedings, 1303, mrsf10-1303-y06-21, doi:10.1557/opl.2011.499 (2011).
7. S. Kontermann, A. Ruf, and R. Preu,Quantitative comparison of simulated and experimental silver crystal formation at the interface of silver thick film contacts on n-type silicon, Energy Procedia 8 (2011) 455-460, doi: 10.1016/j.egypro.2011.06.165.
6. S. Kontermann, A. Grohe, and R. Preu, Detailed analysis of annealing silver front side contacts on silicon solar cells, in Proceedings of the 33rd IEEE Photovoltaic Specialist Conference, San Diego, California, USA (2008).
5. M. Kasemann, W. Kwapil, M.C. Schubert, H. Habenicht, B. Walter, M. The, S. Kontermann, et al., Spatially resolved silicon solar cell characterization using infrared imaging methods, in Proceedings of the 33rd IEEE Photovoltaic Specialist Conference, San Diego, California, USA (2008). [Invited Talk]
4. S. Kontermann, A. Grohe, D. Erath, R. Preu, and G. Willeke, Investigations on the influence of different annealing steps on silicon solar cells with silver thick filmcontacts, in Proceedings of the 22nd European Photovoltaic Solar Energy Conference, Milan, Italy (2007), 1556-1559.
3. E. Pink, T. Trupke, R.A. Bardos, M.D. Abbott, Y. Augarten, and S. Kontermann, Fast series resistance imaging using photoluminescence, in Proceedings of the 22ndEuropean Photovoltaic Solar Energy Conference, Milan, Italy (2007), 381-385. [Best Visual Presentation Award]
2. T. Trupke, R.A. Bardos, M.D. Abbott, P. Würfel, E. Pink, Y. Augarten, F.W. Chen, K. Fisher, J.E. Cotter, M. Kasemann, M. Rüdiger, S. Kontermann, et al., Progress withluminescence imaging for the characterisation of silicon wafers and solar cells, in Proceedings of the 22nd European Photovoltaic Solar Energy Conference, Milan, Italy (2007), 22-31. [Invited Talk]
1. S. Kontermann, G. Emanuel, J. Benick, R. Preu, and G. Willeke, Characterisation of silver thick film contact formation on textured monocrystalline silicon solar cells, in Proceedings of the 21st European Photovoltaic Solar Energy Conference, Dresden,Germany (2006), 613-616.
Artikel in nicht referierten Zeitschriften
3. S. Kontermann, Solarzellen auf Schwarzem Silizium – Wirkungsgrad durch neue Technik verdoppelt, Laser Magazin 02/2012 (2012) 12.
2. S. Kontermann, Record Results for Solar Cells on Femtosecond Laser Pulse Processed Black Silicon, Inter PV 04/2012 (2012) 82-84.
- S. Kontermann, Solarzellen aus Schwarzem Silizium, EP Photovoltaik 3/4 2012 (2012) 39-42.
Eingeladene Vorträge
19. S. Kontermann, Photonische Mikrosysteme, FH Aachen, Jülich (März 2019).
18. S. Kontermann, Photonic Microsystems, Laserzentrum FH Münster, Münster (November 2018).
17. S. Kontermann, Femtosekundenlaser-hyperdotiertes Schwarzes Silizium für photonische Infrarotanwendungen, Optence Netzwerktag, Wetzlar (November 2018).
16. S. Kontermann, Femtosecond laser hyperdoped Black Silicon for infrared optics, 8. Wetzlarer Herbsttagung, Wetzlar (September 2018).
15. S. Kontermann, Femtosekundenlaser und deren Bedeutung für die Photonikbranche in Deutschland,
Optatek Messe, Eröffnungspressekonferenz, Frankfurt (Juni 2018).
14. S. Kontermann, Femtosekunden-Laseranwendungen in der Materialbearbeitung,
Optence e.V., Arbeitskreis Optiken für Laser, Rüsselsheim (April 2018).
13. S. Kontermann, Lasertechnik in Forschung und Lehre an der Hochschule RheinMain,
Hobit Messe, Darmstadt (Januar 2016).
12. S. Kontermann, Innovative LED Beleuchtung,
Hannover Messe, ICLEI Metropolitian Solutions, (2014).
11. S. Kontermann, Siliziumfunktionalisierung mit Femtosekunden Laserpulsen,
Laser Laboratorium Göttingen, 14. PhotonicNet Symposium: Funktionalisierte Oberflächen, Laser-Oberflächenbearbeitung in der Mikroelektronik (2014).
10. S. Kontermann, Adaptive Laserpulsformung zur Materialfunktionalisierung mit Femtosekunden Laserpulsen, Laser Zentrum Hannover, 13. PhotonicNet Symposium: Funktionalisierte Oberflächen,(2013).
9. S. Kontermann, Femtosecond Laser Processing of functional nanostructures and photonic devices, Universität Kassel, Institut für Nanostrukturtechnologie und Analytik (INA), Prof. H. Hillmer (2013).
8. S. Kontermann, Maßgeschneiderte Materialien mit maßgeschneiderten Lichtpulsen,
BMBF Symposium zur Nachwuchsförderung NanoMatFutur im BMBF Rahmenprogramm „Werkstoffinnovationen für Industrie und Gesellschaft - WING“, Bonn (2013).
7. S. Kontermann, Femtosekunden-Laserprozesse für die Photovoltaik,
Institut für Solarenergieforschung Hameln (ISFH), Emmerthal, Prof. J. Schmidt (2013).
6. S. Kontermann, Hybridsolarzellen basierend auf Zinkoxid-Nanodrähten,
Universität Bayreuth, Prof. H.W. Schmidt (2012).
5. S. Kontermann, Femtosekunden Laser prozessiertes Schwarzes Silizium,
International Solar Energy Research Center (ISC) Konstanz (2012).
4. S. Kontermann, Photolumineszens- und REM-Charakterisierung von Silber-Silizium Grenzflächen auf Solarzellen,
Universität Göttingen, Prof. C. Ropers (2010).
3. S. Kontermann, Einfluss von mikrostrukturellen Phänomenen auf die elektrische Leitfähigkeit der Grenzfläche von Silber-Dickfilm-Kontakten auf Silizium,
Universität Konstanz, Prof. E. Scheer (2010).
2. S. Kontermann, Grenzflächeneffekte an Silber-Dickfilm-Kontakten auf Silizium Solarzellen,
Technische Universität Clausthal Prof. W. Schade (2010).
1. S. Kontermann, Characterization and Modeling of Contacting Crystalline Silicon Solar Cells, Massachusetts Institute of Technology (MIT), Prof. T. Buonassisi (2009).
Konferenzbeiträge ohne Artikel (Vortrag oder Poster)
29. X. Liu, K. Chen, B. Radfar, P. Mc Kearney, S. Paulus, S. Schäfer, M. Serué, D. Mutschall, V. Koskinen, T. Pasanen, V. Vähänissi, M. Juntunen, S. Kontermann, H. Savin, Contact formation via femtosecond-laser hyperdoping in silicon optoelectronic devices, Optics & Photonics Days - University of Eastern Finland (UEF), Joensuu, Finland, 30.05.2023 – 01.06.2023 (2023)
28. S. Schäfer, X. Liu, P. Mc Kearney, S. Paulus, B. Radfar, V. Vähänissi, H. Savin and S. Kontermann, Effective carrier lifetime in ultrashort pulse laser hyperdoped silicon: dopant concentration dependence and practical upper limits, EMRS Fall Meeting, Warschau 18.09-21.09.2023 (2023).
27. S. Paulus, P. McKearney, S. Schäfer, T. Niemeyer, M. Roser, F. Piermaier, I. Lebershausen, M. Seibt, S. Kontermann, Evolution of carrier mobility and carrier density of femtosecond laser sulfur hyperdoped silicon after different post-processing treatments, European MRS Spring Meeting, Strasbourg 29.05-02.06.2023 (2023).
26. S. Schäfer, P. McKearney, S. Paulus, and S. Kontermann, Unravelling the optical properties of femtosecond laser hyperdoped silicon by analytical modeling of absorptance, European MRS Spring Meeting, Virtual conference 30.05.-03.06.2022 (2022).
25. P. Mc Kearney, S. Paulus, S. Kontermann, Obtaining high crystallinity and sub-bandgap absorption in femtosecond laser hyperdoped black silicon using femtosecond laser annealing, European MRS Spring Meeting, Virtual conference 17.-23.04.2021 (2021).
24. A. Ahrens, B. Jürgens, A.L. Baumann, S. Kontermann, W.Schade, and M. Seibt,
Deep levels in sulphur hyperdoped silicon probed by Deep Level Transient Spectroscopy,
18th Conference on Gettering and Defect Engineering in Semiconductor Technology, Zeuthen, Germany (2019).
23. S. Hitzel, O. Stilz, M. Will, I. Lebershausen, S. Kontermann,
Diffraktive optische Elemente mit großer Stufenhöhe,
120. Jahrestagung der Deutschen Gesellschaft für Angewandte Optik, Darmstadt, Germany (2019).
22. E. Juhl, D. Rosendahl, S. Paulus, I. Lebershausen, H.-D. Bauer, S. Kontermann
Charakterisierung von mikrostrukturiertem Silizium, hergestellt durch Femtosekundenlaserpulse, mittels Ulbrichtkugel und Rasterelektronenmikroskop,
120. Jahrestagung der Deutschen Gesellschaft für Angewandte Optik, Darmstadt, Germany (2019).
21. S. Kontermann, W. Schippers, A. L. Baumann, and W.Schade,
Experimental realization of adaptive femtosecond laser pulse shaping for optimized laser microstructuring of materials,
European MRS Spring Meeting, Lille, France (2014).
20. K.-M. Guenther, H. Witte, J. Bläsing, A. Krost, T. Gimpel, W. Schade, and S. Kontermann, Silicon surface properties after irradiation with single femtosecond laser pulses under SF6 atmosphere, Deutsche Physikalische Gesellschaft (DPG) Spring Meeting, Regensburg, Germany (2013).
19. K.-M. Guenther, S. Winter, T. Gimpel, W. Schade, and S. Kontermann, Investigating the infrared conversion efficiency of Black Silicon solar cells by measuring the differential spectral responsivity (DSR), Deutsche Physikalische Gesellschaft (DPG) Spring Meeting, Regensburg, Germany (2013).
18. K.-M. Guenther, A. Bomm, T. Gimpel, M. Schulz, H. Fritze, W. Schade, and S. Kontermann, Investigation of the sulfur doping profile of femtosecond-laserdoped Black Silicon solar cells, Deutsche Physikalische Gesellschaft (DPG) Spring Meeting, Regensburg, Germany (2013).
17. N. Oehl, M. Knipper, T. Plaggenborg , A. Gabler, S. Kontermann, J. Parisi, Investigation of Lithium-Silicon System using simultaneous three-electrode impedance measurements, Tagung der Gesellschaft Deutscher Chemiker, München (2012).
16. S. Kontermann, A. L. Baumann, T. Gimpel, K. M. Günther, A. Ruibys, and W. Schade, Formation of Black Silicon by differently polarized femtosecond laser pulses, Deutsche Physikalische Gesellschaft (DPG) Spring Meeting, Berlin, Germany (2012).
15. A. Gabler, A. L. Baumann, T. Gimpel, S. Kontermann, and W. Schade, Gas diffusion electrode development using femtosecond-laser induced microstructured metal surfaces with hydrophobic features, DPGSpring Meeting, Berlin, Germany (2012).
14. A. L. Baumann, T. Gimpel, K.-M. Günther, S. Kontermann, P. Saring, and W. Schade, Absorption properties of femtosecond laser microstructured Black Silicon, DPG Spring Meeting, Berlin, Germany (2012).
13. A. Ruibys, K. M. Günther, S. Kontermann, and W. Schade, Photovoltaic potential of femtosecond laser hyperdoped silicon, DPG Spring Meeting, Berlin, Germany (2012).
12. F. Fattahi Comjani, J. Waltermann, K. M. Günther, M. Köhring, U. Willer, S. Kontermann, and Wolfgang Schade, Nanogenerator on the base of zinc oxide nanowires, DPG Spring Meeting, Berlin, Germany (2012).
11. J. Waltermann, K. M. Günther, S. Kontermann, and W. Schade, TLM measurements of sheet and contact resistance of different ZnO layers produced by wet chemical or sputtering methods, DPG Spring Meeting, Berlin, Germany (2012).
10. K. M. Günther, H. Witte, A. Krost, S. Kontermann, and W. Schade, A new method for obtaining accurate capacitance-voltage curves in the presence of additional space charges, DPG Spring Meeting, Berlin, Germany (2012).
9. K. M. Günther, A. Bomm, T. Gimpel, S. Kontermann, and W. Schade, Black Silicon solar cell emitter doping concentration measured with impedance spectroscopy, DPG Spring Meeting, Berlin, Germany (2012).
8. T. Gimpel, I. Höger, F. Falk, S. Kontermann, and W. Schade, Crystal structure at the surface of femtosecond-laser microstructured silicon for photovoltaics, DPG Spring Meeting, Berlin, Germany (2012).
7. S. Kontermann, A. Ruf, and Ralf Preu, Time Scaling of Silver Nano-Crystal Growth at the Interface of Silver Thick Film Electrodes on n-Type Silicon, DPG Spring Meeting, Dresden, Germany (2011).
6. A. Ruibys, C. Lehmann, T. Gimpel, A. L. Baumann, S. Kontermann, and W. Schade, Determination of the complex refractive index in the infrared region for femtosecond-laser-formed silicon surfaces using ray-tracing, DPG Spring Meeting, Dresden, Germany (2011).
5. K.-M. Günther, J. Waltermann, S. Kontermann, and W. Schade, Electrical Investigations of different polymer and substrate materials for dye-sensitized ZnO-NW/polymer hybrid solar, DPG Spring, Dresden,Germany (2011).
4. T. Gimpel, K.-M. Günther, A. L. Baumann, A. Ruibys, S. Kontermann, and W. Schade, Contact materials for sulphur hyperdoped black silicon, DPG Spring, Dresden, Germany (2011).
3. A. L. Baumann, T. Gimpel, K.-M. Günther, C. Lehmann, A. Ruibys, S. Kontermann, and W. Schade, Black silicon with femtosecond double laser pulses, DPG Spring Meeting, Dresden, Germany (2011).
2. J. Waltermann, K.-M. Günther, S. Kontermann, and W. Schade, Study on different substrates for dye-sensitized ZnO/polymer hybrid solar cells, DPG Spring Meeting, Dresden, Germany (2011).
1. S. Kontermann, Gernot Goll, Todd Sayles, and M. Brian Maple, Investigation of CeCoIn5/Pt point contacts in the normal and superconducting states, DPG Spring Meeting, Regensburg, Germany (2005).