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.
German Association for Crystal Growth - Member since 2010Co-chair of the focus group "Crystals for photonic applications" since 2023
Scientific network of the non-university research institutions in Berlin AdlershofMember of the board since 2015
Co-founder and Associate Member of Berlin Research 50
Workshop on Oxide, Dielectric, and Laser CrystalsFraunhofer IOSB Ettlingen, Sep 24-25, 2025
8th International Symposium on Growth of III-NitridesTaiwan, Nov. 9-12, 2025
Program committee member
9th European Conference on Crystal Growth
(ECCG-9)
5th European School on Crystal Growth
(ESCG-5)
Berlin, Summer 2027
Co-Organizer
(ECCG-9)
5th European School on Crystal Growth
(ESCG-5)
Berlin, Summer 2027
Co-Organizer
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
Journal of Crystal GrowthEditor since 2020
Progress in Crystal Growth and Characterization of MaterialsAssoc. Editor since 2014
Recent publications and drafts:
- Prediction of Impurity Concentrations by Absorption Spectra in AlN Single Crystals Using Random Forest Regression CrystEngComm 27 (2025) 184-190
- Bulk Single Crystals and Physical Properties of Rutile-GeO2 for High Power Electronics and DUV Optoelectronics Phys. Status Solidi B (2025) Early View, DOI: 10.1002/pssb.202400326
- Solid-Solution Limits and Thorough Characterization of Bulk β-(AlxGa1-x)2O3 Single Crystals Grown by the Czochralski Method Adv. Mater. Interfaces 12 (2025) 2400122
- Thermal Conductivity in Solid Solutions of Lithium Niobate Tantalate Single Crystals from 300K up to 1300K J. Alloys Compounds 1008 (2024) 176549
- Evaluation and Thermodynamic Optimization of Phase Diagram of Lithium Niobate Tantalate Solid Solutions J. Mater. Sci. 59 (2024) 12305-12316
- 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
Recent abstracts and presentations:
- Crystals and Substrates for Next-Generation Oxide Semiconductor Devices
Presentation at the Annual conference of the DGKK (DKT 2025)
Frankfurt on Mar 5-7, 2025 - Growth of Bulk Single Crystals of Novel Semiconductor Materials (AlN, Ga2O3, etc.) for Next Generation Efficient Power Electronics,
Invited talk at the 2. International Conference on Materials for Energy & Environmental Engineering (ICM3E 2024)
Algiers, Algeria on Nov 26-28, 2024 - Bulk Crystals for Novel Semiconductors Prepared at IKZ: Gallium Oxide and Beyond,
Presentation at the DGKK workshop on "Bulk Semiconductor Crystals"
Berlin-Adlershof on Oct 9-10, 2024
Conference organisation:
- 9. European Conference on Crystal Growth (ECCG-9),
Berlin, Summer 2027
(Co-Organizer) - International Workshop on Nitride Semiconductors 2026 (IWN 2026),
Kumamoto, Japan, Nov 8-13, 2026
(Member of the Program Committee) - 7. International Symposium on the Growth of Nitrides (ISGN-8),
Tainan, Taiwan, Nov 9-12, 2025
(Member of the Program Committee)