Abstract
Surface states have a fundamental role in many modern technologies as well as in the field-matter interaction exhibited by material surfaces. Their manipulation can be used to functionalise surfaces into devices, enabling or enhancing specific physical mechanism [1]. Many rising technologies, such as photovoltaic metasurfaces, rely on thin-layer semiconductors [2,3]. Most semiconductor surfaces exhibit surface states that pin the Fermi level and induce a bending of the energy band profile in proximity of the surface. In modern semiconductor technology, the map of surface carrier dynamics is of paramount importance in many technological steps. For example it is well established that the surface states have a key role in the in-built potential in Schottky junctions [4].
© 2017 IEEE
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