Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7933047 | Physica E: Low-dimensional Systems and Nanostructures | 2018 | 10 Pages |
Abstract
By using the Green's function and the tight-binding model within the Born approximation, we obtain the electronic thermal conductivity (TC) and Seebeck coefficient [or thermopower (TP)] of monolayer black phosphorus (BP) under charged impurity doping. The results show that the TC and TP along the yâdirection are larger than the xâdirection in clean BP due to the inherent higher value of the electronic density of states in yâdirection. Furthermore, the TC linearly decreases with low impurity concentrations in both directions, whereas it decreases and does not change with low impurity scattering potentials in xâ and yâdirection, respectively. On the other hand, TP increases (decreases) with very dilute impurity concentrations and scattering potentials in xâ(yâ)direction. To be a complete work, we also studied these properties in impurity-infected biased BP. We found that the TC of BP in the presence of impurity gradually increases with bias voltage in both directions and TP has a decreasing (increasing) treatment in xâ(yâ)direction. Our findings move the thermoelectric (TE) applications of BP into promising TE materials.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
H.D. Bui, Mohsen Yarmohammadi,