Publications and presentations of Matthias Bickermann

Crystals for Electronics and Photonics at IKZ Berlin: Basic Research, Prototyping & Services

M. Bickermann

Invited talk at the Lithuania Workshop on Lasers: Science and Technology 2026 in Vilnius, Lithuania on Aug 28, 2026.
slides
Current Topics in Oxide Substrate Crystal Growth at IKZ

M. Bickermann

Invited talk at the Seminar of the Institute Quantum Phenomena in Novel Materials at HZB in Berlin (Wannsee) on Aug 13, 2026.
abstract slides
The Importance of Bulk Crystal Growth for Modern Society

M. Bickermann

Invited talk at the Wiley Nano-Summit 2026 in Berlin on May 20, 2026.
abstract slides
Crystals and Substrates for Next-Generation Oxide Semiconductor Devices

M. Bickermann, Z. Galazka, A. Popp, A. Fiedler, C. Guguschev, R. Blukis, S. Ganschow, T. Schröder

Invited talk at the 50. International Conference and Expo on Advanced Ceramics and Composites (Symposium 14) (ICACC 2026) in Daytona Beach, Florida, USA on Jan 25–30, 2026.
abstract slides
Crystals and Substrates for Next-Generation Oxide Semiconductor Devices

Z. Galazka, A. Fiedler, R. Blukis, C. Guguschev, S. Ganschow, T. Schröder, M. Bickermann

Presentation at the 14. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2025) in Ettlingen on Sep 24–25, 2025.
abstract slides
IKZ - Modern Crystal Science & Technology in Times of Geopolitical Change

T. Schröder, M. Bickermann

Presentation at the Seminar of Prof. Daniel Vizman, Fakulty of Physics at Western University in Timisoara, Romania on Jul 23–24, 2025.
slides
AlN and Ga₂O₃ Substrate Solutions for Next Generation Efficient Power Electronics Devices

M. Bickermann

Presentation at the Workshop on High Voltage Power Components For Defence in ISL Saint-Louis, France on Jun 11, 2025.
slides
Crystals and Substrates for Next-Generation Oxide Semiconductor Devices

Z. Galazka, S. Ganschow, A. Popp, S. Bin Anooz, J. Rehm, A. Fiedler, D. Pfützenreuther, M. Zupancic, R. Blukis, C. Guguschev, T. Schröder, M. Bickermann

Presentation at the Annual conference of the DGKK (DKT 2025) in Frankfurt on Mar 5–7, 2025.
abstract slides
Growth of Bulk Single Crystals of Novel Semiconductor Materials (AlN, Ga₂O₃, etc.) for Next Generation Efficient Power Electronics

M. Bickermann

Invited talk at the 2. International Conference on Materials for Energy & Environmental Engineering (ICM3E 2024) in Algiers, Algeria (online contribution) on Nov 26–28, 2024.
abstract slides
Bulk Crystals for Novel Semiconductors Prepared at IKZ: Gallium Oxide and Beyond

Z. Galazka, S. Ganschow, M. Brützam, S. Bin Anooz, T.-S. Chou, A. Popp, T. Straubinger, M.Bickermann

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in Berlin-Adlershof on Oct 9–10, 2024.
slides
Techniques and Applications of Bulk Crystal Growth from the Melt

M. Bickermann

Lecture at the Seminar at the University of Chemical Technology (VŠChT) in Prague, Czech Republic on Aug 29, 2024.
slides
Techniques and Applications of Bulk Crystal Growth from Solution

M. Bickermann

Lecture at the Seminar at the University of Chemical Technology (VŠChT) in Prague, Czech Republic on Aug 29, 2024.
slides
Co-doping Effects on Anti-Stokes Fluorescence Cooling in Yb:YLF

S. Püschel, C. Kränkel, H. Tanaka, M. Bickermann

Poster at the 8. European Conference on Crystal Growth (ECCG-8) in Warsaw, Poland on Jul 21–25, 2024.
abstract poster
Growth and Investigation of Hexagallate Substrate Crystals for Strain-engineered Functional Oxide layers

C. Rhode, J. Schreuer, M. Münchhalfen, D. Schlom, Y. E. Li, R. Koc, R. Blukis, M. Bickermann, C. Guguschev

Poster at the 8. European Conference on Crystal Growth (ECCG-8) in Warsaw, Poland on Jul 21–25, 2024.
abstract poster
Co-doping Effects on Anti-Stokes Fluorescence Cooling in Yb:YLF

S. Püschel, C. Kränkel, H. Tanaka, M. Bickermann

Poster at the Annual conference of the DGKK (DKT 2024) in Erlangen on Mar 6–8, 2024.
abstract poster
AlN Substrates for UV and Power Applications

C. Hartmann, M. Bickermann

Lecture at the 5. IKZ Winter School in IKZ Berlin on Feb 28–Mar 1, 2024.
slides
Crystals are the Pillars of Modern Technology! Importance of Crystal Growth for Research and Society

M. Bickermann

Lecture at the Seminar at the University of Chemical Technology (VŠChT) in Prague, Czech Republic on Oct 17, 2023.
slides
Crystal Growth Fundamentals: How to grow bulk crystals using phase diagrams

M. Bickermann

Lecture at the Seminar at the University of Chemical Technology (VŠChT) in Prague, Czech Republic on Oct 17, 2023.
slides
Crystal Growth Fundamentals: Atomistic view on mesoscopic growth mechanisms

M. Bickermann

Lecture at the Seminar at the University of Chemical Technology (VŠChT) in Prague, Czech Republic on Oct 17, 2023.
slides
Leibniz-Institut für Kristallzüchtung - Innovations in & by Crystalline Materials

M. Bickermann

Lecture at the DFG Research Group FOR 5044 Summer School in IKZ Berlin on Sep 6–8, 2023.
slides
Gallium Oxide Bulk Crystals Prepared by the Czochralski Method, (100) Substrates, and Homoepitaxy Results

Z. Galazka, S. Ganschow, K. Irmscher, S. Bin Anooz, T.-S. Chou, A. Popp, T. Straubinger, M. Bickermann

Presentation at the 6. International Workshop on UV Materials and Devices 2023 (IWUMD 2023) in Metz, France on Jun 5–8, 2023.
abstract slides
Crystals, Substrates, and Technologies for Ga₂O₃ and Functional Oxides

M. Bickermann

Invited talk at the 50th Anniversary Symposium of the Dutch Association for Crystal Growth (DACG50) in Amsterdam, The Netherlands on Mar 20–22, 2023.
slides
Melt Growth of β-Ga₂O₃ Bulk Crystals

Z. Galazka, S. Ganschow, K. Irmscher, S. Bin Anooz, A. Popp, T.-S. Chou, D. Klimm, T. Straubinger, M. Bickermann

Presentation at the Semiconductor Colloquium of the Cluster Power Electronics at the Fraunhofer IISB in online on Nov 21, 2022.
abstract slides
Research Topics at IKZ Berlin - Targeting Innovations in & by Crystalline Materials for Society

T. Schröder, M. Bickermann

Presentation at the SiMAP Colloquium, Université Grenoble-Alpes in Grenoble, France on Oct 27, 2022.
slides
Bulk β-Ga₂O₃ Single Crystals Grown by the Czochralski Method

Z. Galazka, S. Ganschow, K. Irmscher, S. Bin Anooz, A. Popp, T.-S. Chou, D. Klimm, T. Straubinger, M. Bickermann

Invited talk at the DGKK workshop on "Bulk Semiconductor Crystals" in Freiberg/Saxony on Oct 5–6, 2022.
slides
Favorable Growth Conditions and Diameter Enlargement of Bulk AlN Single Crystals Grown by Physical Vapor Transport

C. Hartmann, M. Bickermann, C. Richter, A. Klump, T. Straubinger

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in Freiberg/Saxony on Oct 5–6, 2022.
slides
Bulk Single Crystals of Transparent Semiconducting Oxides

Z. Galazka, S. Ganschow, K. Irmscher, D. Klimm, R. Schewski, M. Albrecht, A. Dittmar, T. Schulz, M. Pietsch, A. Kwasniewski, I. M. Hanke, M. Sündermann, T. Schröder, M. Bickermann

Presentation at the 11. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2022) in online (Lyon, France) on Sep 15–16, 2022.
abstract slides
Preparation of Perovskite, Pyrochlore and Magnetoplumbite Crystals for Advanced Functional Oxides

C. Guguschev, M. Schulze, J. Köpp, S. Ganschow, M. Bickermann

Presentation at the 7. European Conference on Crystal Growth (ECCG-7) in Paris, France on Jul 25–27, 2022.
abstract slides
Favorable Growth Conditions and Diameter Enlargement of Bulk AlN Single Crystals Grown by Physical Vapor Transport

C. Hartmann, M. Bickermann, C. Richter, A. Klump, T. Straubinger

Presentation at the 7. European Conference on Crystal Growth (ECCG-7) in Paris, France on Jul 25–27, 2022.
abstract slides
Crystals & Components for Science & Technology: The European perspective

T. Schröder, M. Bickermann

Lecture at the GDCh Berlin chapter lecture series in TU Berlin on Apr 25, 2022.
slides
Substrate Crystals for Advanced Functional Oxides

M. Bickermann, M. Schulze, T. Schwaigert, M. Stypa, M. Brützam, D. Klimm, S. Ganschow, C. Guguschev

Presentation at the 10. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2021) in Idar-Oberstein on Sep 16–17, 2021.
abstract slides
Bulk Crystal Growth for Functional Materials, Using Silicon as an Example

M. Bickermann

Lecture at the Lecture series in physics "Selected Topics of Functional Materials“ in University of Marburg on Jan 18, 2021.
slides
Oxides and Fluorides at IKZ

M. Bickermann

Poster at the 9. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2020) in IKZ Berlin on Sep 17–18, 2020.
poster
Crystal Growth of Oxides and Fluorides at the IKZ

M. Bickermann, Z. Galazka, C. Guguschev, D. Schulz, H. Tanaka, D. Klimm, S. Ganschow, C. Kränkel, T. Schröder

Presentation at the Annual conference of the DGKK "50 years of DGKK" (DKT 2020) in Munich-Garching on Mar 11–13, 2020.
abstract slides
Growth and Applications of Oxide and Fluoride Bulk Crystals at IKZ

M. Bickermann

Presentation at the Seminar of the Department Methods for Characterization of Transport Phenomena in Energy Materials at HZB in Berlin (Wannsee) on Jan 15, 2020.
abstract slides
Jan Czochralski and the Decisive Impact of his Invention on Modern Technology

M. Bickermann

Lecture at the IEEE Milestone Event in Memorandum of Jan Czochralski at the HTW in Berlin on Nov 15, 2019.
slides
Crystals and Substrates for Semiconducting Oxide Applications

M. Bickermann

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in IKZ Berlin on Oct 9–10, 2019.
slides
Native AlN substrates

M. Bickermann

Invited talk at the 1st International Workshop on AlGaN based UV-Laserdiodes (IWUVLD 2019) in Berlin on Aug 26–30, 2019.
slides
On the preparation of AlN single crystals and substrates for AlGaN devices

C. Hartmann, J. Wollweber, A. Dittmar, I. Gamov, K. Irmscher, M. Bickermann

Invited talk at the International Workshop on Nitride Semiconductors 2018 (IWN 2018) in Kanazawa, Japan on Nov 11–16, 2018.
abstract slides
Crystal Growth of Oxides and Fluorides for Novel Applications

M. Bickermann

Presentation at the Seminar of Prof. Dr. Kiyoshi Shimamura and Dr. Encarna Garcia Villora, Optical Single Crystals Group at NIMS in Tsukuba, Japan on Nov 9, 2018.
abstract slides
Crystals and Substrates for Semiconducting Oxide Applications

Z. Galazka, S. Ganschow, D. Klimm, R. Uecker, M. Bickermann

Presentation at the 7. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2018) in FEE Idar-Oberstein on Sep 13–14, 2018.
abstract slides
Volumenkristallzüchtung für die (Opto-) Elektronik der Zukunft: Herausforderungen bei der Herstellung von SiC-, AlN- und Ga2O3-Substraten

M. Bickermann

Presentation at the Seminar on the 80th birthday of Klaus-Werner Benz at the FMF in Freiburg/Breisgau on Jul 20, 2018.
slides
Status and Challenges of AlN Bulk Crystal Growth for Use as Substrates in Deep-UV Applications

M. Bickermann

Presentation at the Colloquium of the Fraunhofer IISB in Erlangen on Jun 25, 2018.
slides
Kristalle und Substrate aus Aluminiumnitrid für optoelektronische Bauelemente im tiefen UV

M. Bickermann

Presentation at the Seminar on current research topics at the Fraunhofer THM in Freiberg/Saxony on Jun 4, 2018.
slides
Status and Challenges of AlN Bulk Crystal Growth for Use as Substrates in Deep-UV Applications

C. Hartmann, A. Dittmar, J. Wollweber, S. Sintonen, T. Schulz, K. Irmscher, A. Knauer, S. Hagedorn, U. Zeimer, A. Mogilatenko, C. Kuhn, T. Teke, T. Wernicke, M. Kneissl, M. Weyers, M. Bickermann

Invited talk at the 2. International Workshop on UV Materials and Devices 2017 (IWUMD 2017) in Fukuoka, Japan on Nov 14–18, 2017.
abstract slides
On the Novel Wide Band-Gap Semiconductors AlN and β-Ga₂O₃: Bulk Crystal Growth, Homoepitaxy, Properties and Applications

M. Bickermann

Presentation at the Seminar of Prof. Kakimoto, "Crystal Dynamics" group, RIAM, Kyushu University in Fukuoka, Japan on Nov 13, 2017.
abstract slides
Defects in AlN Bulk Crystal Substrates for UV LEDs and Lasers

M. Bickermann, C. Hartmann, A. Dittmar, S. Sintonen, S. Kollowa, T. Schulz, K. Irmscher, J. Wollweber

Invited talk at the 17. Conference on Defects-Recognition, Imaging and Physics in Semiconductors (DRIP-17) in Valladolid, Spain on Oct 8–12, 2017.
abstract slides
Bulk Single Crystals of Transparent Semiconducting Oxides

Z. Galazka, R. Uecker, D. Klimm, S. Ganschow, K. Irmscher, R. Bertram, A. Kwasniewski, R. Schewski, A. Fiedler, M. Albrecht, M. Pietsch, C. Guguschev, M. Bickermann

Poster at the 6. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2017) in Bordeaux, France on Sep 14–15, 2017.
abstract poster
Recent Progress in Perovskite Crystal Growth at the IKZ

C. Guguschev, S. Ganschow, D. Klimm, Z. Galazka, M. Brützam, I.M. Schulze-Jonack, R. Bertram, M. Bickermann

Poster at the 6. German-French Workshop on Oxide, Dielectric, and Laser Crystals (WODIL 2017) in Bordeaux, France on Sep 14–15, 2017.
abstract poster
Status of AlN Bulk Crystal Growth for Use as Substrates in Deep-UV Applications

C. Hartmann, A. Dittmar, J. Wollweber, S. Sintonen, T. Schulz, K. Irmscher, A. Knauer, M. Weyers, M. Bickermann

Presentation at the Compound Semiconductor Week 2017 (CSW 2017) in Berlin on May 14–18, 2017.
abstract slides
Oxide and Nitride Single Crystals for Novel Optical and Electronic Applications

M. Bickermann, S. Ganschow, D. Klimm, G. Tränkle

Presentation at the 92. Annual Meeting of the German Ceramic Society (DKG 2017) in TU Berlin on Mar 19–22, 2017.
abstract slides
Status of AlN Bulk Crystal Growth for Use as Substrates in Deep-UV Applications

C. Hartmann, A. Dittmar, J. Wollweber, S. Sintonen, T. Schulz, K. Irmscher, A. Knauer, M. Weyers, M. Bickermann

Presentation at the Joint Annual Conference of the DGKK and the SSC (DKT 2017) in University of Freiburg on Mar 8–10, 2017.
abstract slides
Perfekte Substrate für elektronische Bauelemente: Oxid- und Nitrid-Kristallzüchtung am IKZ

M. Bickermann

Presentation at the Seminar of Prof. M. Grundmann, Semiconductor Physics in University of Leipzig on Nov 23, 2016.
slides
Epitaxial Growth and Characterization of Deep UV AlGaN Devices on Bulk AlN Substrates

C. Hartmann, A. Knauer, J. Wollweber, K. Irmscher, T. Schulz, S. Sintonen, A. Dittmar, J. Jeschke, C. Kuhn, M. Guttmann, M. Martens, L. Sulmoni, T. Wernicke, K. Peters, M. Weyers, M. Kneissl, M. Bickermann

Presentation at the International Workshop on Nitride Semiconductors 2016 (IWN 2016) in Orlando, Florida, USA on Oct 2–7, 2016.
abstract slides
Strongly Enhanced Deep UV Transparency of AlN Bulk Crystals Grown by Physical Vapor Transport

C. Hartmann, J. Wollweber, K. Irmscher, A. Dittmar, T. Schulz, S. Sintonen, S. Kollowa, M. Bickermann

Poster at the International Workshop on Nitride Semiconductors 2016 (IWN 2016) in Orlando, Florida, USA on Oct 2–7, 2016.
abstract poster
Atomic Scale Mechanisms and Morphology Evolution in Crystal Growth

M. Bickermann

Lecture at the BaCaTec summer school on ammonothermal growth of nitride crystals in University of Erlangen on Jul 19, 2016.
slides
UVC-transparente Substrate aus Aluminiumnitrid (AlN) mit hoher struktureller Qualität für optoelektronische Bauelemente

M. Bickermann

Presentation at the Seminar on Experimental Physics in University of Freiberg/Saxony on Jul 6, 2016.
abstract slides
Kristalle - die versteckten Säulen der modernen Technologie

M. Bickermann

Presentation at the Berliner Wirtschaftsgespräche in IKZ Berlin on May 9, 2016.
slides
UVC-transparente Substrate aus Aluminiumnitrid (AlN) mit hoher struktureller Qualität für optoelektronische Bauelemente

M. Bickermann

Presentation at the Seminar on Solid State Physics in the FMF in Freiburg/Breisgau on Jan 29, 2016.
slides
Züchtung von Volumenkristallen aus Halbleitern großer Bandlücke aus der Gasphase am Beispiel AlN -
UVC-transparente Substrate aus Aluminiumnitrid (AlN) mit hoher struktureller Qualität für optoelektronische Bauelemente

M. Bickermann

Presentation at the Materials Valley e. V. - Materialforum Rhein-Main in Hanau on Jan 18, 2016.
slides
Bulk AlN Substrates for Deep-UV Optoelectronic Applications

M. Bickermann, C. Hartmann, A. Dittmar, F. Langhans, S. Kollowa, M. Naumann, K. Irmscher, J. Wollweber

Presentation at the DGKK workshop on "Epitaxy of III-V Semiconductors" in Göttingen on Dec 10–11, 2015.
abstract slides
Deep UV Transparent AlN Substrates with High Crystalline Perfection for Optoelectronic Devices

C. Hartmann, J. Wollweber, S. Kollowa, A. Dittmar, T. Schulz, A. Kwasniewski, F. Langhans, U. Juda, K. Irmscher, M. Albrecht, M. Bickermann

Invited talk at the 6. International Symposium on the Growth of Nitrides (ISGN-6) in Hamamatsu, Japan on Nov 8–12, 2015.
abstract slides
Preparation of Semi-insulating and Weak n-type Conducting AlN Substrates

C. Hartmann, S. Kollowa, A. Dittmar, F. Langhans, T. Schulz, M. Naumann, K. Irmscher, J. Wollweber, Yu. Suhak, H. Fritze, M. Bickermann

Poster at the 6. International Symposium on the Growth of Nitrides (ISGN-6) in Hamamatsu, Japan on Nov 8–12, 2015.
abstract poster slides
Tailoring Electrical and Optical Properties of AlN During Seeded AlN Bulk Growth

M. Bickermann, C. Hartmann, A. Dittmar, F. Langhans, S. Kollowa, M. Naumann, K. Irmscher, J. Wollweber

Invited talk at the 9. International Workshop on Bulk Nitride Semiconductors (IWBNS-IX) in Oak Valley, Wonju, South Korea on Nov 2–6, 2015.
abstract slides
Bulk Aluminium Nitride Substrates Tailored for Electronic Applications

M. Bickermann, C. Hartmann, A. Dittmar, F. Langhans, S. Kollowa, T. Schulz, M. Naumann, A. Kwasniewski, K. Irmscher, J. Wollweber

Invited talk at the European Materials Research Society Fall Meeting 2015 (Symposium H) (EMRS Fall 2015) in Warsaw, Poland on Sep 15–18, 2015.
abstract slides
Preparation of Oxide, Dielectric, and Laser Crystals at the Leibniz-Institute for Crystal Growth (IKZ) Berlin

M. Bickermann

Presentation at the 4. German-French Workshop on Oxide, Dielectrics and Laser Crystals (WODIL 2015) in ISL Saint-Louis, France on Sep 10–11, 2015.
abstract slides
Preparation and Properties of Bulk Aluminum Nitride (AlN) Crystals and Substrates

M. Bickermann

Presentation at the Seminar of Prof. Zlatko Sitar, Department Materials Science and Engineering at North Carolina State University (NCSU) in Raleigh, North Carolina, USA on Jan 29, 2015.
slides
Preparation and Properties of Bulk Aluminum Nitride (AlN) Crystals and Substrates

M. Bickermann

Invited talk at the 39. International Conference and Expo on Advanced Ceramics and Composites (Focus Session FS 5) (ICACC 2015) in Daytona Beach, Florida, USA on Jan 25–30, 2015.
abstract slides
Theorie und Praxis der Züchtung von AlN-Einkristallen bei Temperaturen über 2000°C

M. Bickermann

Presentation at the Seminar on Anorganic Chemistry, Institut für Chemie in TU Berlin on Jan 15, 2015.
slides
Vom AlN-Kristall zum UV-C-Laser: Erste Ergebnisse zu Wafering, Epitaxie und Bauelementherstellung auf AlN-Substraten des IKZ

M. Bickermann

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in University of Freiberg/Saxony on Oct 8–9, 2014.
slides
Seeded Bulk AlN Growth by the Physical Vapor Transport Method

M. Bickermann

Invited talk at the International Workshop on Nitride Semiconductors 2014 (IWN 2014) in Wroclaw, Poland on Aug 24–29, 2014.
abstract slides
Das Leibniz-Institut für Kristallzüchtung (IKZ) und Aktivitäten im Bereich AlN

M. Bickermann

Presentation at the Seminar of Prof. Zahn, Semiconductor Physics in University of Chemnitz on Jun 27, 2014.
slides
Growth of AlN Bulk Crystals for AlGaN-based Devices

M. Bickermann, A. Dittmar, C. Hartmann, K. Irmscher, S. Kollowa,, A. Kwasniewski, T. Schulz, F. Langhans, T. Neugut, U. Juda, J. Wollweber, A. Knauer, M. Weyers, C. Reich, F. Mehnke, C. Kuhn, M. Martens, T. Wernicke, M. Kneissl

Invited talk at the European Materials Research Society Spring Meeting 2014 (Symposium W) (EMRS Spring 2014) in Lille, France on May 26–30, 2014.
abstract slides
Technological Considerations for Seeded AlN Bulk Growth

C. Hartmann, J. Wollweber, A. Dittmar, F. Langhans, S. Kollowa, T. Neugut, K. Irmscher, M. Naumann, A. Kwasniewski, M. Bickermann

Invited talk at the 8. International Workshop on Bulk Nitride Semiconductors (IWBNS-VIII) in Kloster Seeon on Sep 30–Oct 5, 2013.
abstract slides
AlN Substrates for Optoelectronic Devices

M. Bickermann

Presentation at the "Berlin WideBaSe" Consortium Application Workshop in Berlin on Sep 19–20, 2013.
abstract slides
Influence of Seed Orientation on Structural and Optical Properties of Homoepitaxial Grown Bulk AlN Single Crystals

C. Hartmann, J. Wollweber, A. Dittmar, F. Langhans, S. Kollowa, T. Neugut, A. Kwasniewski, M. Naumann, K. Irmscher, M. Bickermann

Presentation at the 10. International Conference on Nitride Semiconductors (ICNS-10) in Washington, D.C., USA on Aug 25–30, 2013.
abstract slides
Current Topics in Sublimation Growth of Bulk Aluminum Nitride (AlN)

M. Bickermann, C. Hartmann, A. Dittmar, F. Langhans, S. Kollowa, T. Neugut, J. Wollweber

Presentation at the 19. American Conference on Crystal Growth and Epitaxy (ACCGE-19) in Keystone, Colorado, USA on Jul 21–26, 2013.
abstract slides
Herstellung und Eigenschaften von Aluminiumnitrid-Volumenkristallen

M. Bickermann

Presentation at the seminar of Prof. Goldhahn, Material physics in University of Magdeburg on Dec 10, 2012.
abstract slides
AlN Volumenkristallzüchtung und Verunreinigungsproblematik

M. Bickermann

Invited talk at the DGKK workshop on "Epitaxy of III-V Semiconductors" in Fraunhofer IISB, Erlangen on Dec 5–6, 2012.
slides
GaN- und AlN-Volumenkristalle - Status und Potentiale

M. Bickermann

Presentation at the company Schott Solar in Jena on Dec 5, 2012.
slides
Sublimation Growth of Bulk Aluminium Nitride Single Crystals With High Structural Perfection

M. Bickermann, C. Hartmann, J.Wollweber, A. Dittmar, C. Guguschev, F. Langhans

Poster at the 6. European Space Agency - MOD Round Table Workshop on Wide Bandgap Semiconductors and Components in ESA/ESTEC Noordwijk, The Netherlands on Oct 8–9, 2012.
Proceedings poster
Status der Nitrid-Forschung am IKZ

M. Bickermann

Presentation at the Meeting of the scientific advisory board of the IKZ Berlin in IKZ Berlin on Sep 27, 2012.
slides
Sublimation Growth of Wide Band-Gap Materials (SiC and AlN)

M. Bickermann

Lecture at the International Summer School on Crystal Growth and Photovoltaics (ISSCG 2012) in Brasov, Romania on Aug 27–31, 2012.
abstract slides
AlN Single Crystals as Substrates for Deep-UV Optoelectronics

M. Bickermann, C. Hartmann, J. Wollweber, A. Dittmar, C. Guguschev, F. Langhans, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Invited talk at the 9th International Romanian Conference on Advanced Materials (ROCAM 2012) in Brasov, Romania on Aug 27–31, 2012.
abstract slides
Einkristallzüchtung - ein aktuelles und interdisziplinäres Forschungsgebiet

M. Bickermann

at the Inaugural talk at the Institut für Chemie in TU Berlin on Jun 22, 2012.
slides
Preparation and Peculiarities of Bulk AlN Substrates

M. Bickermann

Presentation at the Seminar of Prof. Kneissl, Experimental Nanophysics and Photonics, Institute for Solid State Physics in TU Berlin on Apr 25, 2012.
abstract slides
Current Status of Aluminum Nitride Crystal Growth

M. Bickermann

Presentation at the "Berlin WideBaSe" Consortium Workshop in Messe Berlin on Mar 19, 2012.
slides
Herstellung und Eigenschaften von Aluminumnitrid (AlN)-Volumenkristallen und Substraten

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in Fraunhofer IISB, Erlangen on Oct 5–6, 2011.
slides
Faceting in AlN Bulk Crystal Growth and its Impact on Optical Properties

M. Bickermann, B. M. Epelbaum, O. Filip, B. Tautz, P. Heimann, A. Winnacker

Presentation at the 9. International Conference on Nitride Semiconductors (ICNS-9) in Glasgow, Great Britain on Jul 10–15, 2011.
abstract slides manuscript
Herstellung und Eigenschaften von Aluminiumnitrid (AlN)-Volumenkristallen und Substraten

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Presentation at the Colloquium on "Semiconductor Technology and Analysis" of the Fraunhofer IISB in Erlangen on May 16, 2011.
slides
Faceting in AlN Bulk Crystal Growth and its Impact on Optical Properties

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Presentation at the Joint annual conference of the DGKK and the PTWK (DKT 2011) in Slubice, Poland on Mar 14–18, 2011.
abstract slides
Current Status of Aluminum Nitride Bulk Crystal Growth

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Presentation at the Chair of Materials and Process Simulation (Prof. Dr. Heike Emmerich) in University Bayreuth on Jan 19, 2011.
slides
Punktdefekte und chemische Analyse von AlN- und AlN-SiC-Einkristallen

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in University of Freiberg/Saxony on Oct 6–7, 2010.
slides
Bulk Growth of AlN-SiC Mixed Crystals with Homogeneous Composition on Aluminum Nitride Substrates

M. Bickermann, O. Filip, B. M. Epelbaum, P. Heimann, A. Winnacker

Presentation at the International Workshop on Nitride Seminconductors 2010 (IWN 2010) in Tampa, Florida, USA on Sep 19–24, 2010.
abstract slides
Structural Defects in Aluminum Nitride Bulk Crystals Visualized by Cathodoluminescence Maps

M. Bickermann, S. Schimmel, B. M. Epelbaum, O. Filip, P. Heimann, S. Nagata, A. Winnacker

Presentation at the International Workshop on Nitride Seminconductors 2010 (IWN 2010) in Tampa, Florida, USA on Sep 19–24, 2010.
abstract slides manuscript
Thermally Stimulated Luminescence in Aluminium Nitride Crystals

M. Bickermann, S. Schuster, B. M. Epelbaum, O. Filip, P. Heimann, S. Nagata, A. Winnacker

Poster at the International Workshop on Nitride Seminconductors 2010 (IWN 2010) in Tampa, Florida, USA on Sep 19–24, 2010.
abstract poster manuscript
Growth Related Defects in Bulk AlN

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Invited talk at the Gordon Research Conference (GRC) on Defects in Semiconductors in New London, New Hampshire, USA on Aug 8–10, 2010.
slides
Aluminum Nitride - an Interesting Material and a Challenge for Bulk Crystal Growth

M. Bickermann

Invited talk at the to the appointment committee in IKZ Berlin on Jul 7, 2010.
slides
Deep-UV Transparent Bulk Single-crystalline AlN Substrates

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, M. Feneberg, S. Nagata, A. Winnacker

Presentation at the 8. International Conference about Nitride Semiconductors (ICNS-8) in Jeju, Korea on Oct 18–23, 2009.
abstract slides manuscript
Sublimation Growth of Bulk Crystals of AlN-Rich (AlN)_x(SiC)_1-x Solid Solutions

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Poster at the 8. International Conference about Nitride Semiconductors (ICNS-8) in Jeju, Korea on Oct 18–23, 2009.
abstract poster manuscript
UV Transparent Single-crystalline Bulk AlN Substrates

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, S. Nagata, A. Winnacker

Presentation at the European Materials Research Society Spring Meeting 2009 (Symposium J) (EMRS Spring 2009) in Strasbourg, France on Jun 8–12, 2009.
abstract slides manuscript
Optische Eigenschaften und Punktdefekthaushalt in einkristallinen Substraten aus Aluminiumnitrid

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, A. Winnacker

Presentation at the Annual Conference of the DGKK (DKT 2009) in IFW Dresden on Mar 4–6, 2009.
abstract slides
Herstellung und Charakterisierung von Aluminiumnitrid-Einkristallen als Substratmaterial für die Optoelektronik

M. Bickermann

at the Habilitation (Inauguration as Lecturer) at the Technical Faculty in University of Erlangen on Dec 17, 2008.
Outline slides abstract
Point Defect Content and Optical Transitions in Bulk Aluminum Nitride Crystals

M. Bickermann, B. Epelbaum, O. Filip, P. Heimann, S. Nagata, A. Winnacker

Presentation at the International Workshop on Nitride Seminconductors 2008 (IWN 2008) in Montreux, Switzerland on Oct 5–10, 2008.
abstract slides manuscript
Self-Compensation of Shallow Donors in AlN: High-Frequency EPR and ENDOR Studies

P.G. Baranov, A.P. Bundakova, S.B. Orlinskii, J. Schmidt, M. Bickermann, B.M. Epelbaum, A. Winnacker

Presentation at the International Workshop on Nitride Seminconductors 2008 (IWN 2008) in Montreux, Switzerland on Oct 5–10, 2008.
abstract slides
Herstellung und Charakterisierung von Aluminiumnitrid-Einkristallen (als Substratmaterial für die Optoelektronik)

M. Bickermann

Presentation at the Colloquium on "Materials Science" in University of Erlangen on Jun 3, 2008.
abstract slides
Structural Properties of Aluminum Nitride Bulk Single Crystals Grown by PVT

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, S. Nagata, S. Schmidt, A. Winnacker

Poster at the 7. International Conference on Nitride Semiconductors (ICNS-7) in Las Vegas, Nevada, USA on Sep 16–21, 2007.
abstract poster manuscript
Aktueller Stand der AlN-Kristallzüchtung in Erlangen und Strukturelle Eigenschaften der AlN-Volumeneinkristalle

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, S. Nagata, A. Winnacker

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in University of Freiberg/Saxony on Sep 12–13, 2007.
slides
Structural Properties of AlN Bulk Crystals - A Review

M. Bickermann

Presentation at the Seminar on Materials for Electrical Engineering in University of Erlangen on Jul 10, 2007.
slides
Structural Properties and Defect-Selective Etching of Aluminum Nitride Substrates

M. Bickermann, B. Epelbaum, S. Schmidt, P. Heimann, S. Nagata, A. Winnacker

Presentation at the European Materials Research Society Spring Meeting 2007 (Symposium G) (EMRS Spring 2007) in Strasbourg, France on May 27–Jun 1, 2007.
abstract slides
Aluminiumnitrid-Substrate für UV-Halbleiterbauelemente - Stand der Technik und Eigenschaften

M. Bickermann, B. M. Epelbaum, O. Filip, P. Heimann, S. Nagata, A. Winnacker

Presentation at the company WaveLight Aesthetic in Erlangen on Jan 18, 2007.
slides
Defect-Selective Etching of Aluminum Nitride Single Crystals

M. Bickermann, B. M. Epelbaum, S. Schmidt, P. Heimann, S. Nagata, A. Winnacker

Poster at the International Workshop on Nitride Seminconductors 2006 (IWN 2006) in Kyoto, Japan on Oct 22–27, 2006.
abstract poster manuscript
Properties of Al-Polar PVT Grown Single-crystalline Aluminum Nitride

M. Bickermann, B. M. Epelbaum, P. Heimann, M. Feneberg, G. M. Prinz, K. Thonke, R. Sauer, A. Winnacker

Presentation at the European Materials Research Society Spring Meeting 2006 (Symposium S) (EMRS Spring 2006) in Nice, France on May 28–Jun 2, 2006.
abstract slides
Herstellung und Eigenschaften von Volumeneinkristallen und Substraten aus Aluminiumnitrid (AlN)

M. Bickermann

Presentation at the Seminar on Applied Physics in University of Erlangen on Feb 6, 2006.
slides
Herstellung und Eigenschaften von Volumeneinkristallen und Substraten aus Aluminiumnitrid (AlN)

M. Bickermann

Presentation at the Seminar on Semiconductor Physics in University of Ulm on Nov 8, 2005.
slides
Herstellung und Eigenschaften von Volumeneinkristallen und Substraten aus Aluminiumnitrid (AlN)

M. Bickermann

Presentation at the Center for Micro- and Nanotechnologies (ZMN) in University of Ilmenau on Nov 2, 2005.
slides
AlN-Volumenkristallzüchtung - Aktueller Stand und offene Fragen

M. Bickermann, P. Heimann, S. Nagata, B. M. Epelbaum, A. Winnacker

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in University of Freiberg/Saxony on Oct 5–6, 2005.
slides
Orientation-dependent Properties of Aluminum Nitride Single Crystals

M. Bickermann, P. Heimann, B. M. Epelbaum

Poster at the 6. International Conference on Nitride Semiconductors (ICNS-6) in Bremen on Aug 28–Sep 2, 2005.
abstract poster manuscript
Charakterisierung von freistehenden AlN-Einkristallen

M. Bickermann

Presentation at the DGKK workshop on "Bulk Semiconductor Crystals" in Fraunhofer IISB, Erlangen on Apr 6–7, 2005.
slides
Charakterisierung von freistehenden AlN-Einkristallen

M. Bickermann

Presentation at the Seminar on Materials for Electrical Engineering in University of Erlangen on Apr 19, 2005.
slides
Aktueller Stand und Probleme bei neuartigen blauen und UV-Diodenlasern - Das Problem der Herstellung nitridischer Substrate

M. Bickermann

Presentation at the DFG research training group of the physics department in University of Kaiserslautern on Jan 19, 2005.
slides
Aktueller Stand bei der Herstellung von AlN-Volumeneinkristallen

M. Bickermann, B. Epelbaum, A. Winnacker

Presentation at the DGKK workshop on "III-V Semiconductors and SiC" in University of Freiberg/Saxony on Oct 6–7, 2004.
slides
Verfahren, aktueller Stand und Probleme der Herstellung von AlN-Volumeneinkristallen

M. Bickermann

Presentation at the Seminar of ISG 1 in Research Centre Jülich on Sep 30, 2004.
abstract slides
Structural Properties of AlN Crystals Grown by Physical Vapor Transport

M. Bickermann, B. Epelbaum, A. Winnacker

Presentation at the 14. International Conference on Crystal Growth (ICCG-14) in Grenoble, France on Aug 9–13, 2004.
abstract slides
Preparation of Semi-Insulating Silicon Carbide Single Crystals

M. Bickermann

Presentation at the company II-VI Inc. in Pine Brook, New Jersey, USA on Jul 29, 2004.
slides
Growth and Characterization of Bulk AlN Substrates Grown by PVT

M. Bickermann

Presentation at the Seminar of Prof. Zlatko Sitar, Department Materials Science and Engineering at North Carolina State University (NCSU) in Raleigh, North Carolina, USA on Jul 26, 2004.
slides
Comparative Study of the Initial Growth Stage in PVT Growth of AlN on SiC and on Native AlN Substrates

B. M. Epelbaum, P. Heimann, M. Bickermann, A. Winnacker

Presentation at the International Workshop on Nitride Seminconductors 2004 (IWN 2004) in Pittsburgh, Pennsylvania, USA on Jul 19–23, 2004.
abstract slides manuscript
Structural Properties of AlN Crystals Grown by Physical Vapor Transport

M. Bickermann, B. M. Epelbaum, A. Winnacker

Poster at the International Workshop on Nitride Seminconductors 2004 (IWN 2004) in Pittsburgh, Pennsylvania, USA on Jul 19–23, 2004.
abstract poster manuscript
Growth and Characterization of Bulk AlN Substrates Grown by PVT

M. Bickermann, B. M. Epelbaum, M. Kazan, Z. Herro, P. Masri, A. Winnacker

Presentation at the 7. Expert Evaluation and Control of Compound Semiconductor Materials and Technologies (EXMATEC 2004) in Montpellier, France on Jun 2–5, 2004.
abstract slides manuscript
Strukturelle Eigenschaften von sublimationsgezüchteten AlN-Kristallen

M. Bickermann, B. Epelbaum, A. Winnacker

Presentation at the Joint Annual Conference of the DGKK and the DGK (DKT 2004) in Jena on Mar 15–19, 2004.
abstract slides
Züchtung und Charakterisierung von AlN-Volumenkristallen

M. Bickermann

Presentation at the Seminar on Solid State Physics in the FMF in Freiburg/Breisgau on Nov 14, 2003.
slides
Züchtung und Charakterisierung von AlN-Volumenkristallen

M. Bickermann, B. M. Epelbaum, A. Winnacker

Presentation at the Seminar on Materials for Electrical Engineering in University of Erlangen on Oct 28, 2003.
slides
Strukturelle, elektrische und optische Eigenschaften von AlN-Volumenkristallen

M. Bickermann, B. M. Epelbaum, A. Winnacker

Presentation at the DGKK workshop on "III-V Semiconductors and SiC" in University of Freiberg/Saxony on Oct 16–17, 2003.
slides
Structural, Optical, and Electrical Properties of Bulk AlN Crystals Grown by PVT

M. Bickermann, B. M. Epelbaum, A. Winnacker

Poster at the 10. International Conference on Silicon Carbide and Related Materials 2003 (ICSCRM 2003) in Lyon, France on Oct 5–10, 2003.
abstract poster manuscript
Analysis of Different Vanadium Charge States in Vanadium Doped 6H-SiC by Low Temperature Optical Absorption and Electron Paramagnetic Resonance

M. Bickermann, K. Irmscher, R. Weingärtner, A. Winnacker

Poster at the 10. International Conference on Silicon Carbide and Related Materials 2003 (ICSCRM 2003) in Lyon, France on Oct 5–10, 2003.
abstract poster manuscript
Oxygen in PVT Growth of Bulk AlN: Influence on Growth Process and Crystal Properties

M. Bickermann, B. M. Epelbaum, A. Winnacker

Presentation at the 15. American Conference on Crystal Growth and Epitaxy (ACCGE-15) in Keystone, Colorado, USA on Jul 20–24, 2003.
abstract slides
PVT Growth of Bulk AlN Crystals with Low Oxygen Contamination

M. Bickermann, B. M. Epelbaum, A. Winnacker

Presentation at the 5. International Conference on Nitride Semiconductors (ICNS-5) in Nara, Japan on May 25–30, 2003.
abstract slides manuscript
Oxygen in PVT Growth of Bulk AlN: Influence on Growth Process and Crystal Properties

M. Bickermann, B. M. Epelbaum und A. Winnacker

Poster at the 2nd French-German Crystal Growth Meeting (DKT 2003) in Nancy, France on Mar 10–13, 2003.
abstract poster
Electrical and Optical Characterization of p-Type Boron Doped 6H-SiC Bulk Crystals

M. Bickermann, R. Weingärtner, Z. Herro, D. Hofmann, U. Künecke, P. J. Wellmann, A. Winnacker

Poster at the European Conference on Silicon Carbide and Related Materials 2002 (ECSCRM 2002) in Linköping, Sweden on Sep 1–5, 2002.
abstract poster manuscript
Preparation of Semi-Insulating Silicon Carbide by Vanadium Doping During PVT Bulk Crystal Growth

M. Bickermann, D. Hofmann, T. L. Straubinger, R. Weingärtner, A. Winnacker

Poster at the European Conference on Silicon Carbide and Related Materials 2002 (ECSCRM 2002) in Linköping, Sweden on Sep 1–5, 2002.
abstract poster manuscript
Herstellung von semi-isolierenden SiC-Einkristallen - Forschung am Lehrstuhl WW6

M. Bickermann

Presentation at the company SiCrystal AG in Erlangen on Jul 30, 2002.
slides
Herstellung von semi-isolierenden Siliziumkarbid-Einkristallen

M. Bickermann

at the Dissertation (PhD equivalent) at the Technical Faculty in University of Erlangen on Mar 19, 2002.
Outline slides online resource
Sublimation Growth of Bulk AlN Crystals: Materials Compatibility and Crystal Quality

B. Epelbaum, D. Hofmann, M. Bickermann, A. Winnacker

Presentation at the 9. International Conference on Silicon Carbide and Related Materials 2001 (ICSCRM 2001) in Tsukuba, Japan on Oct 28–Nov 2, 2001.
slides manuscript
On the Preparation of Vanadium-Doped Semi-insulating SiC Bulk Crystals

M. Bickermann, D. Hofmann, T. L. Straubinger, R. Weingärtner, A. Winnacker

Presentation at the 9. International Conference on Silicon Carbide and Related Materials 2001 (ICSCRM 2001) in Tsukuba, Japan on Oct 28–Nov 2, 2001.
abstract slides manuscript
Incorporation of Boron and the Role of Nitrogen as a Compensation Source in SiC Bulk Crystal Growth

M. Bickermann, R. Weingärtner, D. Hofmann, T. L. Straubinger, A. Winnacker,

Poster at the 9. International Conference on Silicon Carbide and Related Materials 2001 (ICSCRM 2001) in Tsukuba, Japan on Oct 28–Nov 2, 2001.
abstract poster manuscript
On the Preparation of Semi-Insulating SiC Bulk Crystals by the PVT Technique

M. Bickermann, D. Hofmann, T. L. Straubinger, R. Weingärtner, P. J. Wellmann, A. Winnacker

Poster at the European Materials Research Society Spring Meeting 2001 (Symposium F) (EMRS Spring 2001) in Strasbourg, France on Jun 5–8, 2001.
abstract poster manuscript
Herstellung von semi-isolierenden SiC-Einkristallen

M. Bickermann

Presentation at the Seminar on Materials for Electrical Engineering in University of Erlangen on May 8, 2001.
slides
Herstellung von semiisolierenden SiC-Kristallen mit dem PVT-Verfahren

M. Bickermann

Presentation at the DGKK workshop on "III-V Semiconductors and SiC" in IKZ Berlin on Mar 21–22, 2001.
slides
Study of Boron Incorporation During PVT Growth of p-type SiC Crystals

M. Bickermann, D. Hofmann, M. Rasp, T. L. Straubinger, R. Weingärtner, P. J. Wellmann, A. Winnacker

Poster at the European Conference on Silicon Carbide and Related Materials 2000 (ECSCRM 2000) in Kloster Banz on Sep 3–7, 2000.
abstract poster manuscript
Herstellung von undotiertem und bordotiertem SiC

M. Bickermann

Presentation at the Seminar on Materials for Electrical Engineering in University of Erlangen on Jul 4, 2000.
slides
Untersuchungen zum Ankeimverhalten und zur Defektbildung in der Siliziumkarbid-Kristallzüchtung

M. Bickermann

at the Diploma Thesis Presentation at the Chair of Materials for Electrical Engineering in University of Erlangen on Jul 9, 1998.
Diplomarbeit slides
Lösungszüchtung von SiC aus Graphittiegeln

M. Bickermann

at the Student research paper at the chair of Materials for Electrical Engineering in University of Erlangen on Jun 29, 1997.
Studienarbeit
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1998
1997
Invited talks
Invited lectures
Contributed talks
Poster presentations
Presentations at national meetings
Presentations at universities and institutes
Presentations at companies and societies
Presentations at the home institute
Overview talks and other topics
Aluminium Nitride (AlN)
Oxide and substrate crystals
Fluorides and laser crystals
Silicon Carbide (SiC)

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1998

1997

Invited talks

Invited lectures

Contributed talks

Poster presentations

Presentations at national meetings

Presentations at universities and institutes

Presentations at companies and societies

Presentations at the home institute

Overview talks and other topics

Aluminium Nitride (AlN)

Oxide and substrate crystals

Fluorides and laser crystals

Silicon Carbide (SiC)