Prof. Dr. Bernd Witzigmann
Chair of Optoelectronics
Professors
Address
Konrad-Zuse-Straße 3-5 91052 ErlangenRoom: 01.045, Floor: 01
Contact
Publications
- Alhussien Ali Marouf, I., Römer, F., Schilling, M., Biebler, F., Höpfner, J., Grigoletto, M.,... Witzigmann, B. (2026). Device Simulation of Hole Transport in 233 nm Multiquantum Well AlGaN-Based UV LED. physica status solidi (a), 223(17). https://doi.org/10.1002/pssa.70484
- Kölle, S., Römer, F., & Witzigmann, B. (2026). Numerical study of stimulated emission in AlGaN quantum-wells for deep ultraviolet laser diodes. In Proceedings of the Gallium Nitride Materials and Devices XXI (pp. PC138960S). SPIE.
- Kölle, S., Römer, F., & Witzigmann, B. (2026). Simulation of gain characteristics in AlGaN quantum wells under impact of inhomogeneous band broadening. Applied Physics Letters, 128(16). https://doi.org/10.1063/5.0325429
- Römer, F., Werner, S., Koblmuller, G., & Witzigmann, B. (2026). Modelling the Injection Efficiency of III-V Core-Shell Nanowire Lasers with InGaAs Active Gain Media. In Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 9-10). Cork, IRL: IEEE Computer Society.
- Alhussien Ali Marouf, I., Römer, F., Schilling, M., Biebler, F., Höpfner, J., Grigoletto, M.,... Witzigmann, B. (2025). Analysis of effective carrier mobility in the multi-quantum wells of DUV AlGaN LEDs by carrier transport simulations. In Proceedings Volume PC13360, Physics and Simulation of Optoelectronic Devices XXXIII (pp. 26). San Francisco, US: SPIE.
- Faber, S., & Witzigmann, B. (2025). Theoretical Analysis of a pn-Diode on AIN with Distributed Polarization Doping. physica status solidi (a). https://doi.org/10.1002/pssa.202500629
- Utsch, B., Römer, F., Faber, S., Bertram, F., Schmidt, G., Veit, P.,... Witzigmann, B. (2025). Modelling Electron Beam Induced Current in III-Nitride Light Emitting Diodes. In Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 21-22). Lodz, POL: IEEE Computer Society.
- Cardinali, G., Kölle, S., Schulz, A., Susilo, N., Hauer Vidal, D., Guttmann, M.,... Kneissl, M. (2024). Gain Characteristics of Optically Pumped UVC Lasers with Wide AlGaN Single-Quantum-Well Active Regions. physica status solidi (a). https://doi.org/10.1002/pssa.202400067
- Faber, S., Römer, F., & Witzigmann, B. (2024). Simulation Study of Aluminum Nitride TrenchFETs with Polarization-Induced Doping. physica status solidi (a). https://doi.org/10.1002/pssa.202400045
- Hofmann, G., Muhin, A., Susilo, N., Römer, F., Wernicke, T., Kneissl, M., & Witzigmann, B. (2024). Simulation of Carrier Injection Efficiency in AlGaN-based UV-light-emitting Diodes. IEEE Photonics Journal, 1-8. https://doi.org/10.1109/JPHOT.2024.3430488
- Hopfner, J., Kuhl, F., Schilling, M., Muhin, A., Guttmann, M., Hofmann, G.,... Kneissl, M. (2024). Unraveling carrier distribution in far-UVC LEDs by temperature-dependent electroluminescence measurements. Applied Physics Letters, 125(7). https://doi.org/10.1063/5.0223284
- Jeddi, H., Adham, K., Zhao, Y., Witzigmann, B., Römer, F., Bermeo, M.,... Pettersson, H. (2024). Enhanced LWIR response of InP/InAsP quantum discs-in-nanowire array photodetectors by photogating and ultra-thin ITO contacts. Nanotechnology, 35(21). https://doi.org/10.1088/1361-6528/ad2bd0
- Kunne, M., Kusserow, T., Witzigmann, B., & Hillmer, H. (2024). Modifying the Complex Refractive Index of Thin-Films for Nanooptical Applications. In 2024 International Conference on Optical MEMS and Nanophotonics (OMN). San Sebastian, ES: IEEE Computer Society.
- Kölle, S., Römer, F., Cardinali, G., Schulz, A., Susilo, N., Hauer Vidal, D.,... Witzigmann, B. (2024). Optical Gain in AlGaN Quantum Wells: Impact of Higher Energy States. IEEE Photonics Journal, 16(2), 1-5. https://doi.org/10.1109/JPHOT.2024.3379231
- Römer, F., Hofmann, G., Hoopfner, J., Schilling, M., Muhin, A., Wernicke, T.,... Witzigmann, B. (2024). Carrier Transport in a Deep Ultraviolet Mixed Quantum Well Light Emitting Diode. IEEE Photonics Journal, 1-6. https://doi.org/10.1109/JPHOT.2024.3351965
- Jeddi, H., Witzigmann, B., Adham, K., Hrachowina, L., Borgstrom, M.T., & Pettersson, H. (2023). Spectrally Tunable Broadband Gate-All-Around InAsP/InP Quantum Discs-in-Nanowire Array Phototransistors with a High Gain-Bandwidth Product. ACS Photonics. https://doi.org/10.1021/acsphotonics.2c02024
- Kolle, S., Römer, F., Cardinali, G., Schultz, A., Susilo, N., Vidal, D.H.,... Witzigmann, B. (2023). Simulation of optical gain in AlGaN quantum wells. In Paolo Bardella, Alberto Tibaldi (Eds.), Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 77-78). Turin, IT: IEEE Computer Society.
- Römer, F., Hofmann, G., Höpfner, J., Schilling, M., Muhin, A., Wernicke, T.,... Witzigmann, B. (2023). Effect of the Hole Mobility on the Emission Spectrum of a Deep Ultraviolet Mixed Quantum Well Light Emitting Diode. In Paolo Bardella, Alberto Tibaldi (Eds.), Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 61-62). Turin, ITA, IT: IEEE Computer Society.
- Wein, K., Bertram, F., Schmidt, G., Veit, P., Christen, J., Faber, S.,... Debald, A. (2023). Nano-characterization of a space-charge region in a pn-diode with long drift layer: detailed cathodoluminescence and EBIC correlation. In Proceedings of the Gallium Nitride Materials and Devices XVIII. SPIE.
- Witzigmann, B., & Römer, F. (2023). Polarization induced doping for carrier transport in graded III-nitride layers: a simulation study. In Bernd Witzigmann, Marek Osinski, Yasuhiko Arakawa (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.
- Bettenhausen, M., Gruessing, S., Hardt, E., Flesch, J., Römer, F., Chavarin, C.A.,... Witzigmann, B. (2022). Impedance matching of THz plasmonic antennas. Journal of Infrared, Millimeter, and Terahertz Waves, 43(9-10), 844.
- Chavarin, C.A., Hardt, E., Skibitzki, O., Voss, T., Eissa, M., Spirito, D.,... Witzigmann, B. (2022). Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators. Frequenz. https://doi.org/10.1515/freq-2022-0078
- Hardt, E., Chavarin, C.A., Gruessing, S., Flesch, J., Skibitzki, O., Spirito, D.,... Capellini, G. (2022). Quantitative protein sensing with germanium THz-antennas manufactured using CMOS processes. Optics Express, 30(22), 40265-40276. https://doi.org/10.1364/OE.469496
- Hofmann, G., Höpfner, J., Schilling, M., Muhin, A., Romer, F., Wernicke, T.,... Witzigmann, B. (2022). Carrier Transport in Multi Colour Deep Ultraviolet Light Emitting Diodes. In Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 79-80). Turin, IT: IEEE Computer Society.
- Witzigmann, B., Jeddi, H., Zheng, X., Hrachowina, L., Borgström, M.T., & Pettersson, H.J. (2022). Theoretical analysis of photogating in InP nanowire arrays with embedded InAsP quantum discs. In Proceedings of the Physics and Simulation of Optoelectronic Devices XXX (pp. 19). San Francisco, CA, US.
- Chavarin, C.A., Hardt, E., Gruessing, S., Skibitzki, O., Costina, ., Spirito, D.,... Capellini, G. (2021). n-type Ge/Si antennas for THz sensing. Optics Express, 29(5), 7680-7689. https://doi.org/10.1364/OE.418382
- Chavarin, C.A., Wiciak, A.A., Hardt, E., Gruessing, S., Skibitzki, O., Costina, I.,... Spirito, D. (2021). Biomolecule sensing in THz range with n-Ge/Si antennas. In International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz. Chengdu, CHN: IEEE Computer Society.
- Flesch, J., Bettenhausen, M., Kazmierczak, M., Klesse, W.M., Skibitzki, O., Psathaki, O.E.,... Piehler, J. (2021). Three-dimensional interfacing of cells with hierarchical silicon nano/microstructures for midinfrared interrogation of in situ captured proteins. ACS Applied Materials and Interfaces, 13(7), 8049-8059. https://doi.org/10.1021/acsami.0c22421
- Jeddi, H., Karimi, M., Witzigmann, B., Zeng, X., Hrachowina, L., Borgstrom, M.T., & Pettersson, H. (2021). Gain and bandwidth of InP nanowire array photodetectors with embedded photogated InAsP quantum discs. Nanoscale, 13(12), 6227-6233. https://doi.org/10.1039/d1nr00846c
- Mertin, P., & Witzigmann, B. (2021). Quantum Information Interface on a Photonic Crystal Chip. In 2021 INTERNATIONAL CONFERENCE ON NUMERICAL SIMULATION OF OPTOELECTRONIC DEVICES (NUSOD) (pp. 97-98). , ELECTR NETWORK: NEW YORK: IEEE.
- Romer, F., & Witzigmann, B. (2021). Effect of Inhomogeneous Broadening in Deep Ultraviolet Light Emitting Diodes. In Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 61-62). Turin, ITA, IT: IEEE Computer Society.
- Römer, F., Guttmann, M., Wernicke, T., Kneissl, M., & Witzigmann, B. (2021). Effect of Inhomogeneous Broadening in Ultraviolet III-Nitride Light-Emitting Diodes. Materials, 14(24). https://doi.org/10.3390/ma14247890
- Wetterau, L., Abert, C., Suess, D., Albrecht, M., & Witzigmann, B. (2021). Extended micromagnetic model for the detection of superparamagnetic labels using a GMR vortex sensor. Journal of Physics Communications, 5(7). https://doi.org/10.1088/2399-6528/ac174f
- Amano, H., Collazo, R., Santi, C.D., Einfeldt, S., Funato, M., Glaab, J.,... Zhang, Y. (2020). The 2020 UV emitter roadmap. Journal of Physics D: Applied Physics, 53(50). https://doi.org/10.1088/1361-6463/aba64c
- Becker, A., Bjelica, M., Sichkovskyi, V., Eyal, O., Rippien, A., Schnabel, F.,... Reithmaier, J. (2020). InP-based narrow-linewidth widely tunable quantum dot distributed feedback lasers InP-basierte weit verstimmbare Quantenpunkt-Laser mit verteilten Rückkopplungsgittern und schmalen Emissionslinienbreiten. In Proceedings of the 16. ITG-Fachtagung Photonische Netze - 16th ITG Conference on Photonic Networks (pp. 186-189). VDE Verlag GmbH.
- Becker, A., Bjelica, M., Sichkovskyi, V., Eyal, O., Rippien, A., Schnabel, F.,... Reithmaier, J.P. (2020). InP-basierte weit verstimmbare Quantenpunkt-Laser mit verteilten Rückkopplungsgittern und schmalen Emissionslinienbreiten. In Photonische Netze - 16. ITG-Fachtagung (pp. 186-189). Leipzig, DE: VDE Verlag GmbH.
- Becker, A., Septon, T., Ghosh, S., Bjelica, M., Sichkovskyi, V., Rippien, A.,... Reithmaier, J.P. (2020). Narrow-linewidth 1.5 μm quantum dot distributed feedback lasers for next generation coherent communication. In Photonische Netze - 19. ITG-Fachtagung (pp. 142-144). Leipzig, DE: VDE Verlag GmbH.
- Gruessing, S., Witzigmann, B., Roemer, F., Capellini, G., Alvarado, C., Klesse, W.M.,... Flesch, J. (2020). Modeling of plasmonic semiconductor THz antennas in square and hexagonal array arrangements. In Laurence P. Sadwick, Tianxin Yang (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, US: SPIE.
- Jentzsch, B., Gomez-Iglesias, A., Tonkikh, A., & Witzigmann, B. (2020). Red surface-emitting SLEDs. In Jong Kyu Kim, Michael R. Krames, Martin Strassburg (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, US: SPIE.
- Mertin, P., Roemer, F., & Witzigmann, B. (2020). Numerical analysis of subwavelength field effects in photonic crystal slab cavities. JPhys Photonics, 2(1). https://doi.org/10.1088/2515-7647/ab60c6
- Romer, F., & Witzigmann, B. (2020). Luminescence and Internal Quantum Efficiency of Deep UV Light Emitting Diodes. In Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD (pp. 57-58). Turin, IT: IEEE Computer Society.
- Schlykow, V., Manganelli, C.L., Roemer, F., Clausen, C., Auge, L., Schulze, J.,... Fischer, I.A. (2020). Ge(Sn) nano-island/Si heterostructure photodetectors with plasmonic antennas. Nanotechnology, 31(34). https://doi.org/10.1088/1361-6528/ab91ef
- Strempel, K., Roemer, F., Yu, F., Meneghini, M., Bakin, A., Wehmann, H.-H.,... Waag, A. (2020). Vertical 3D gallium nitride field-effect transistors based on fin structures with inverted p-doped channel. Semiconductor Science and Technology, 36(1). https://doi.org/10.1088/1361-6641/abc5ff
- Wetterau, L., Abert, C., Suess, D., Albrecht, M., & Witzigmann, B. (2020). Micromagnetic simulations of submicron vortex structures for the detection of superparamagnetic labels. Sensors, 20(20), 1-13. https://doi.org/10.3390/s20205819
- Witzigmann, B., Roemer, F., Martens, M., Kuhn, C., Wernicke, T., & Kneissl, M. (2020). Calculation of optical gain in AlGaN quantum wells for ultraviolet emission. AIP Advances, 10(9). https://doi.org/10.1063/5.0021890
- Witzigmann, B., & Romer, F. (2020). Carrier injection efficiency in III-nitride light emitting diodes: Effective potential correction. In Optics InfoBase Conference Papers. Washington, DC, US: OSA - The Optical Society.