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GraFOx paper featured on Applied Physics Letters April cover

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A paper written by members of the GraFOx research network has been featured on the front cover of Applied Physics Letters this month. The study explores the optical transitions in β-Ga2O3, a material with a wide bandgap crucial for power electronic devices. Using polarization and temperature dependent photoluminescence excitation spectroscopy, researchers uncover three distinct optical transitions, two of which align with known transitions. However, a third peak does not match theoretical predictions, challenging previous assignments. The findings provide valuable insights into the material's optical properties, highlighting potential discrepancies between experimental results and theoretical calculations.

GraFOx is a Berlin-based network focused on the creation and exploration of oxide systems for new generations of electronic devices. The network combines experiment and theory in crystal growth, epitaxy, and fundamental physical investigations and is committed to educating young scientists in one of the most promising areas of solid-state physics. The GraFOx network is comprised of 8 research institutions and universities and is jointly managed by PDI and IKZ. GraFOx is hosting the International Workshop on Gallium Oxide and Related Materials (IWGO) from May 26 – 31, 2024, bringing together scientists and engineers working on all aspects of materials and device technology.

Read more about GraFOx and the IWGO Conference here.

Publication: Anisotropy of optical transitions in β-Ga2O3 investigated by polarized photoluminescence excitation spectroscopy
Authors: Moritz Meißner, Nils Bernhardt, Felix Nippert, Benjamin M. Janzen, Zbigniew Galazka, Markus R. Wagner
Journal: Applied Physics Letters
DOI: 10.1063/5.0189751