扶手椅狀石墨烯奈米帶功率因子之提升;Enhancement of power factor in Armchair Graphene Nanoribbons

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Title:	扶手椅狀石墨烯奈米帶功率因子之提升;Enhancement of power factor in Armchair Graphene Nanoribbons
Authors:	馬英傑;Chieh, Ma-Ying
Contributors:	電機工程學系
Keywords:	石墨烯;功率因子
Date:	2025-06-26
Issue Date:	2025-10-17 12:38:56 (UTC+8)
Publisher:	國立中央大學
Abstract:	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.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

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