بررسي خواص ترموالكتريك عايق‌هاي توپولوژيك

In this research, a conceptual model an‎d structural strategy are proposed to investigate thermoelectric design principles based on the decoupling of edge an‎d bulk states in zigzag nanoribbons. Zigzag nanoribbons are known to exhibit distinct edge states that significantly influence their electronic an‎d thermoelectric behavior. These edge states strongly affect charge transport an‎d energy conversion efficiency. To harness these properties more effectively, a longitudinal trench is introduced along the nanoribbon, which enables the separation of edge states from the bulk. This structural modification enhances charge transport along the edges while suppressing the undesired bulk contribution. To maintain the stability an‎d integrity of the edge states, the trench edges are appropriately passivated. The results of the proposed conceptual model reveal that this approach can lead to a remarkable increase in the generated electrical power, thereby enhancing the electronic contribution to thermoelectric performance. From this perspective, trench engineering is introduced not only as a practical method but also as a general design strategy that can be extended to nanoribbon-based thermoelectric systems.

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