A paper written by members of the GraFOx research network, including PDI’s Markus R. Wagner, 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.
