量子點陣列嵌入奈米線連接金屬電極之熱二極體

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姓名

謝宏顥(Hung-Hao Hsieh) 查詢紙本館藏

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電機工程學系

論文名稱

量子點陣列嵌入奈米線連接金屬電極之熱二極體
(Heat diodes made of quantum dots embedded in nanowires connected to metallic electrodes)

相關論文

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★ 應用於數位電視頻帶之平衡不平衡轉換器設計	★ 單電子電晶體之元件特性模擬
★ 半導體量子點之穿隧電流	★ 有機非揮發性記憶體之量測與分析
★ 鍺奈米線與矽奈米線電晶體之研製	★ 選擇性氧化複晶矽鍺奈米結構形成鍺量子點及在單電子電晶體之應用
★ 以微控制器為基礎的智慧型跑步機系統研製	★ 單電子電晶體耦合量子點的負微分電導效應
★ 單電子電晶體的熱電效應	★ 多量子點系統之熱電效應
★ 多量子點系統之熱整流效應	★ 單電子電晶體在有限溫度下的模擬
★ 分子電晶體之穿隧電流與熱電效應	★ 串接耦合量子點之熱電特性

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摘要(中)

設計熱流二極體，對熱流的控制應用是非常重要的。然而，整個領域的進展非常有限。特別是，少有實驗的文獻在期刊刊出。雖然理論在相同課題有不少的報導，但是理論文獻所提出的系統及熱整流的機制，對實驗的建構是非常困難的。所以對實驗的幫助還是很有限，而多數的熱整流二極體都採用聲子為主要的熱流載子。本論文考慮電子為熱流整流的主要載子。量子點奈米線因可以大大增加聲子的散射，所以聲子熱流可以被壓抑。利用非均勻的量子點奈米線所形成的階梯能階，我們可以對電子熱流產生效能不錯的熱整流特性。相較其他的文獻所提出的設計，量子點奈米線或許是一個較容易建構的系統。

摘要(英)

It is very important to design novel heat diodes in the control of heat currents. So far, few literatures have experimentally reported the heat rectification feature of such devices. Although some theoretical concepts considering phonon carriers to carry heat currents have been proposed to design heat diodes, these proposals are not easy to be implemented by experiments. This thesis considers the structure of quantum dot superlattice nanowires with staircase energy levels and theoretically demonstrates that electron heat currents show a heat rectification behavior. To have a high efficient electron heat diode, phonon heat currents should be fully blocked.

關鍵字(中)

★ 熱二極體
★ 量子點
★ 奈米線

關鍵字(英)

論文目次

摘要 ………………………………………………………………………………………………………………………i
Abstract………………………………………………………………………………………………………………ii
目錄 ………………………………………………………………………………………………………………………iii
圖目錄………………………………………………………………………………………………………………………iv
第一章、導論 …………………………………………………………………………………………………1
1-1 前言 ……………………………………………………………………………………………………………1
1-2 熱整流的簡介 ……………………………………………………………………………………………2
1-3 熱二極體的介紹與發展 ………………………………………………………………………3
第二章、系統模型 ……………………………………………………………………………………5
2-1熱二極體系統熱二極體系統熱二極體系統 ……………………………5
2-2電子系統總能 ………………………………………………………………………………………………6
2-3電子流與熱…………………………………………………………………………………………………7
2-4電子傳輸係數 ……………………………………………………………………………………………9
2-5 聲子熱流 ……………………………………………………………………………………………………11
第三章、熱二極體系統的特性與分析熱二極體系統的特性與分析 ………………………………………………………………………13
3-1 電子庫倫交互作用力對熱二極體之影響 …………………………………………13
3-2 溫差對熱電壓之影響 ………………………………………………………………………………15
3-3 系統平均溫度改變對熱電壓之影響 ……………………………………………………16
3-4 系統平均溫度改變對電子熱流與整係數之影響 ……………………………20
3-5 能階差改變對電子熱流與整係數之影響 …………………………………………22
3-6 溫差改變對電子熱流與整係數之影響 ………………………………………………23
3-7 聲子熱流對系統的影響 ……………………………………………………………………………25
第四章第四章、結論 ………………………………………………………………………………………28
參考文獻………………………………………………………………………………………………………………29

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指導教授

郭明庭

審核日期

2018-7-10

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