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姓名	李俊廷(Chun-Ting Lee)  查詢紙本館藏	畢業系所	電機工程學系
論文名稱	具有周期性空缺的鋸齒狀石墨烯奈米帶的熱電效應 (Thermoelectric Effects of Zigzag Graphene Nanoribbons with Periodic Vacancies.)
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摘要(中)	儘管鋸齒狀石墨烯納米帶（ZGNRs）通常呈現金屬相，但具有周期性空缺的 ZGNRs導致了亞能帶和能隙的產生。因此，探索它們的熱電性質變得至關重要。利用緊束縛模型和 Green′s 函數技術，我們從理論上研究了具有周期性空缺的 ZGNRs 的熱電效應。空缺的大小和位置影響了亞能帶的寬度和能隙的大小，為優化與金屬電極的接觸性提供了途徑。在室溫下，具有周期性小空缺的 ZGNRs 的最大功率因數（PF）可達到一維系統理論限制值的84%。
摘要(英)	Although zigzag graphene nanoribbons (ZGNRs) typically exhibit metallic phases, those with periodic vacancies introduce subbands and band gaps. Hence, exploring their thermoelectric properties becomes imperative. Utilizing the tight-binding model and Green’s function technique, we theoretically investigate the thermoelectric effects of ZGNRs featuring periodic vacancies. The widths of subbands and magnitudes of gaps are influenced by the sizes and positions of vacancies, offering avenues for optimizing contact properties with metallic electrodes. At room temperature, the maximum power factor (PF) achievable by ZGNRs with periodic vacancies can reach 84% of the theoretical limit for one-dimensional systems.
關鍵字(中)	★ 石墨烯 ★ 石墨烯奈米帶 ★ 熱電效應	關鍵字(英)	★ Graphene ★ Graphene Nanoribbons ★ Thermoelectric Effects
論文目次	摘要 I Abstract II 目錄 III 圖目錄 V 第一章、導論 1 1-1前言 1 1-2 熱電效應 2 1-3 石墨稀 4 1-4 Bottom-up Approach…………………………………………………………………………………..5 1-5 研究動機 5 第二章、系統模型 6 2-1 石墨烯奈米帶 6 2-2 具週期性空缺之鋸齒型石墨烯奈米帶 8 2-3系統電子總能 9 2-4 熱電係數 10 2-5 電子熱導(ke)與聲子熱導(kph) 12 第三章、熱電特性的模擬與分析 14 3-1 Anti-dot 14 3-2空缺對熱電特性的影響 16 3-3不同電極材料線接觸在Armchair edge對M-GQDA的影響 17 3-4 不同電極材料線接觸在Zigzag edge對M-GQDA的影響 20 3-5 金屬電極面接觸在M-GQDA上對熱電特性的影響 24 第四章、結論 28 參考文獻 29
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指導教授	郭明庭	審核日期	2024-6-25
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