Enhanced thermoelectric efficiency of zigzag bilayer phosphorene nanoribbon; edge states engineering

Abstract

We theoretically investigate the thermoelectric properties of zigzag bilayer phosphorene nanoribbons (ZBPNR). We first, draw an analogy between the extended Su-Schrieffer-Heeger (SSH) ladder and ZBPNR edge states and obtain their corresponding band structure and wave functions analytically. Then, by applying the energy filtering method, we show that the electric power and thermoelectric efficiency of the ZBPNRs can be improved remarkably in the presence of mid-gap edge states. We also argue how to engineer the edge modes to further optimize thermoelectric power and efficiency of the system by applying periodic point potentials at the boundaries.

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Cited by in corpus (2)

• Spin-orbit coupling effects in single-layer phosphorene
• Line Edge Roughness Effects on the Thermoelectric Properties of Armchair Black Phosphorene Nanoribbons