在本篇論文中，我們利用緊束缚模型以及格林函數，從理論上研究了扶手椅狀石墨烯奈米帶(AGNRs)異質結構的熱電效應，我們將氮化硼奈米帶(BNNRs)和扶手椅型石墨烯奈米帶(AGNRs) 組合成異質結構，使其耦合來改變能帶的結構進而產生陣列特性。而我們發現，15AGNR - 5BNNR的功率因子可以超過一維理想系統的功率因子的量子限制，這是由於在第一子帶能級的簡併所致，利用此優勢，我們進而可以優化石墨烯奈米帶(GNRs)元件的功率輸出。

In this thesis, we theoretically investigate the thermoelectric effect of armchair graphene nanoribbons (AGNRs) heterostructure using Green’s function and tight-binding model. To this end, BNNRs and AGNRs were combined to form a heterostructure, inducing coupling that modifies the band structure and gives rise to array characteristics. The power factor of 15AGNR - 5BNNR structure can exceed the quantum limit of the power factor in an ideal one-dimensional system. This enhancement is attributed to the degeneracy at the first subbands energy level. Leveraging this advantage, we can further optimize the power output of graphene nanoribbon (GNR) devices.

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