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[Analysis Case] Evaluation of Band Structure by X-ray Absorption and Emission Spectroscopy

Detailed information about the valence band, conduction band, and gap states of the material can be obtained.

Understanding the band structure, including valence bands, conduction bands, and gap states, is an extremely important evaluation criterion for controlling various properties of materials. However, there are limited analytical methods available for direct and detailed assessment of these aspects. Simultaneous measurements of X-ray absorption spectroscopy (XAS) and X-ray emission spectroscopy (XES) using synchrotron radiation allow for a comprehensive understanding of the band structure, as well as detailed information regarding the attribution of the elements and orbitals that compose it. This document presents the XAS and XES spectra of GaN substrates as an example of measurement.

• Company：一般財団法人材料科学技術振興財団　MST
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