Abstract
The use of medium-sized highly brilliant soft X-ray synchrotron radiation (SR) enables analyses with much better spatial, energy and time resolution, resulting in visualizing surface/interface electronic structure in nano regions. In order to improve performances of electronic, magnetic and energy devices, it is required to characterize and control electronic structures. In the world, several SR rings with the emittance of less than 1 nmrad are being constructed, aiming at revolutionary progress of surface/interface sciences using soft X-rays. Although we have constructed the University of Tokyo Outstation at SPring-8 for soft X-ray surface/interface sciences, medium-sized highly brilliant SR ring is strongly required for further development in this field. In this article, nano-region photoelectron spectroscopy for graphene FET and ReRAM, soft X-ray emission spectroscopy for fuel cells and Li ion batteries, and time-resolved photoelectron spectroscopy for photocatalysts are introduced, and future prospects of soft X-ray surface/interface sciences are discussed.
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