The role of band-tail states on the electric properties of amorphous chalcogenides: A simulative approach
R. Brunetti,
C. Jacoboni,
M. Rudan
Abstract:Band-tail states, i.e., charge-carrier energy states located in the bandgap at the valence and conduction band edges of amorphous materials, even though not delocalized, exhibit nonzero mobility; thus, they are expected to contribute to the charge-conduction process. A microscopic model based on hydrodynamic transport equations for unipolar conduction, including trap, band-tail, and band states, and coupled to the Poisson equation is presented here. The equations are self-consistently solved by means of a nume… Show more
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