Research interest
- Melt and flux growth of oxides and fluorides for optical, piezoelectric and laser crystals, and as substrates for novel electronic devices.
- Growth and characterization of wide-bandgap semiconductor bulk crystals. These crystals are used as substrate material in semiconductor technology.
- Growth and characterization technologies, correlation between preparation and properties of bulk single crystals in a general sense.
Member since 2010
Initiativgemeinschaft außeruniversitärer Forschungsinstitute in Adlershof
Member of the board since 2015
I was co-founding Berlin Research 50
14th International Conference on Nitride Semiconductors
Fukuoka, Nov. 12-17, 2023
Program committee member
5th International Workshop on Gallium Oxide and Related Materials
Berlin, May 26-31, 2024
Read my Book chapter on AlN bulk crystal growth in
III-Nitride Ultraviolet Emitters, Springer Verlag 2016
Read my book chapter on bulk crystal growth of SiC and AlN in the Elsevier Handbook of Crystal Growth, 2nd Ed., Vol. 2A
IKZ is member of the Leibniz association
JCG Editor since 2020
PCGCM Assoc. Editor since 2014
Last changes on this homepage: September 3, 2023
Co-authored submissions and recent publications:
- Efficient Diameter Enlargement of Bulk AlN Single Crystals with High Structural Quality Appl. Phys. Express 16 (2023) 075502
- Fanout Periodic Poling of BaMgF4 Crystals Opt. Mater. Express 13 [8] (2023) 2158-2164
- Solid Solutions of Lithium Niobate and Lithium Tantalate: Crystal Growth and the Ferroelectric Transition Ferroelectrics 613 (2023) 250-262
- Bulk Single Crystals and Physical Properties of β-(AlxGa1-x)2O3 (x = 0 - 0.35) Grown by the Czochralski Method J. Appl. Phys. 133 (2023) 035702
- Dislocation Climb in AlN Crystals Grown at Low Temperature Gradients Revealed by 3D X-Ray Imaging Crystal Growth Des. 23 (2023) 1538-1546
- The Thermal Conductivity Tensor of β-Ga2O3 from 300 to 1275 K Cryst. Res. Technol. 58 (2023) 2200204
Recent abstracts and presentations:
- Leibniz-Institut für Kristallzüchtung - Innovations in & by Crystalline Materials
Presentation at the DFG Research Group FOR 5044 Summer School,
IKZ Berlin on Sep 6-8, 2023 - Gallium Oxide Bulk Crystals Prepared by the Czochralski Method, (100) Substrates, and Homoepitaxy Results
Presentation at the 6. International Workshop on UV Materials and Devices 2023 (IWUMD 2023),
Metz, France on Jun 5-8, 2023 - Crystals, Substrates, and Technologies for Ga2O3 and Functional Oxides
Invited talk at the 50th Anniversary Symposium of the Dutch Association for Crystal Growth (DACG50),
Amsterdam, The Netherlands on Mar 20-22, 2023 - Melt growth of Bulk β-Ga2O3 Bulk Crystals
Presentation in the Semiconductor Colloquium of the Cluster Power Electronics at the Fraunhofer IISB
(online) on Nov 21, 2022 - Research Topics at IKZ Berlin - Targeting Innovations in & by Crystalline Materials for Society
Presentation at the SiMAP Colloquium,
Université Grenoble-Alpes, Grenoble, France on Oct 27, 2022 - Bulk β-Ga2O3 Single Crystals Grown by the Czochralski Method
Invited talk at the DGKK workshop on "Bulk Semiconductor Crystals",
Freiberg/Saxony on Oct 5-6, 2022 - Favorable Growth Conditions and Diameter Enlargement of Bulk AlN Single Crystals Grown by Physical Vapor Transport
Presentation at the DGKK workshop on "Bulk Semiconductor Crystals",
Freiberg/Saxony on Oct 5-6, 2022
Conference organisation:
- 8. European Conference on Crystal Growth (ECCG-8), Jul 21-25, 2024 in Warsaw, Poland
(Member of the International Advisory Committee) - 14th International Conference on Nitride Semiconductors (ICNS-14), Nov 14-19, 2023 in Fukuoka, Japan
(Member of the program committee) - 12th Workshop on Oxide, Dielectric, and Laser Crystals, Sep 21-22, 2023 in Berlin
(Main Organizer) - Summer school on "Periodic Low-Dimensional Defect Structures in Polar Oxides", Sep 6-8, 2023 in Berlin
(Local Organizer) - 20th International Conference on Crystal Growth (ICCGE-20), Jul 30-Aug 4, 2023 in Naples, Italy
(Member of the program committee)