GaN

Friederike Zimmermann, Jan Beyer, Christian Röder, F.C. Beyer, E. Richter, K. Irmscher, Johannes Heitmann Current Status of Carbon-Related Defect Luminescence in GaN physica status solidi a 218 (2021) 2100235, DOI: 10.1002/pssa.202100235

Friederike Zimmermann, Jan Beyer, F. C. Beyer, G. Gärtner, I. Gamov, K. Irmscher, E. Richter, M. Weyers, Johannes Heitmann A carbon-doping related luminescence band in GaN revealed by below bandgap excitation Journal of Applied Physics 130 (2021) 055703, DOI:10.1063/5.0053940

E. Richter, Franziska C. Beyer, Friederike Zimmermann, G. Gärtner, K. Irmscher, I. Gamov, Johannes Heitmann, M. Weyers, G. Tränkle Growth and Properties of Intentionally Carbon‐Doped GaN Layers Crystal Research&Technology 2020 (2019) 1900129, DOI: 10.1002/crat.201900129

G. Lukin, T. Schneider, M. Förste, M. Barchuk, C. Schimpf, Christian Röder, Friederike Zimmermann, E. Niederschlag, O. Pätzold, Franziska C. Beyer, D. Rafaja, M. Stelter Heteroepitaxial growth of GaN on sapphire substrates by high temperature vapor phase epitaxy Journal of Crystal Growth 524 (2019) 125185, DOI: 10.1016/j.jcrysgro.2019.125185

Friederike Zimmermann, G. Gärtner, Hendrik Sträter, Christian Röder, M. Barchuk, D. Bastin, P. Hofmann, M. Krupinski, T. Mikolajick, Johannes Heitmann, Franziska C. Beyer Green coloring of GaN single crystals introduced by Cr impurity Journal of Luminescence 207 (2019) 507-511, DOI: 10.1016/j.jlumin.2018.11.044

MDP etc.

J. Hennig, J. Klier, S. Duran, Kuei-Shen Hsu, Jan Beyer, C. Röder, F. Beyer, N. Schüler, N. Vieweg, K. Dutzi, G. von Freymann, D. Molter Wide-range resistivity characterization of semiconductors with terahertz time-domain spectroscopy Optics Express (2024) https://doi.org/10.1364/OE.519564

Jan Beyer, N. Schüler, J. Erlekamp, B. Kallinger, P. Berwian, K. Dornich, Johannes Heitmann, Minority Carrier Lifetime Measurements on 4H-SiC Epiwafers by Time-Resolved Photoluminescence and Microwave Detected Photoconductivity Materials Science Forum 963 (2019) 313-317, DOI: 10.4028/www.scientific.net/MSF.963.313

REE

M. C. Fuchs, Jan Beyer, S. Lorenz, Suchinder K. Sharma, A. D. Renno, Johannes Heitmann, R. Gloaguen, A spectral library for laser-induced fluorescence analysis as a tool for rare earth element identification Earth System Science Data 13 (2021) 4465, DOI:10.5194/essd-13-4465-2021.

Suchinder K. Sharma, Thomas Behm, T. Köhler, Jan Beyer, R. Gloaguen, Johannes Heitmann Library of UV-Visible Absorption Spectra of Rare Earth Orthophosphates,
LnPO4 (Ln = La-Lu, except Pm) Crystals 10 (2020) 593, DOI: 10.3390/cryst10070593

Suchinder K. Sharma, Jan Beyer, R. Gloaguen, Johannes Heitmann Comparing the optical properties and thermal stability of green (TbPO₄), yellow (DyPO₄), and red (PrPO₄) emitting single crystal samples Phys. Chem. Chem. Phys. 22 (2020) 10247, DOI: 10.1039/D0CP01561J

Suchinder K. Sharma, Jan Beyer, R. Gloaguen, Johannes Heitmann Non-quenching photoluminescence emission up to at least 865 K upon near-UV excitation in a single crystal of orange-red emitting SmPO₄ Phys. Chem. Chem. Phys. 21 (2019) 25669-25677, DOI: 10.1039/C9CP05663G

Suchinder K. Sharma, Th. Köhler, Jan Beyer, M. Fuchs, R. Gloaguen, Johannes Heitmann Extending the temperature sensing range using Eu³⁺ luminescence up to 865 K in a single crystal of EuPO₄ Phys. Chem. Chem. Phys. 21 (2019) 16329-16336, DOI: 10.1039/C9CP03501J

Suchinder K. Sharma, M. Bettinelli, I. Carrasco, Jan Beyer, R. Gloaguen, Johannes Heitmann Dynamics of Charges in Superlong Blacklight-Emitting CaB₂O₄:Ce³⁺ Persistent Phosphor J. Phys. Chem. C 123 (2019) 14639-14646, DOI: 10.1021/acs.jpcc.9b02210

P. Seidel, S. Lorenz, Th. Heinig, R. Zimmermann, R. Booysen, Jan Beyer, Johannes Heitmann, R. Gloaguen Fast 2D Laser-Induced Fluorescence Spectroscopy Mapping of Rare Earth Elements in Rock Samples Sensors 19 (2019) 2219, DOI: 10.3390/s19102219

S. Lorenz, Jan Beyer, M. Fuchs, P. Seidel, D. Turner, Johannes Heitmann, R. Gloaguen The Potential of Reflectance and Laser Induced Luminescence Spectroscopy for Near-Field Rare Earth Element Detection in Mineral Exploration Remote Sensing 11 (2019) 21, DOI: 10.3390/rs11010021

Perowskite

G. Fischer, Katharina Klose, T. Kleint, H. Stöcker, Jan Beyer, Johannes Heitmann, Matthias Müller Synthesis and Defect Characterization of 2D Hybrid-Perovskites Proc. 38th EU PVSEC, pp. 430–432, 2021. ISBN: 3-936338-78-7. DOI:10.4229/EUPVSEC20212021-3BV.1.11