臺灣博碩士論文加值系統

近幾年人們意識到石化能源並非取之不盡，故環保及綠色能源的概念逐漸得到重視，因此尋求更潔淨的再生能源並且提高能源轉換使用的效率，對於人類未來的經濟發展與地球環境的維持有著相當急迫
的必要性。
本文的主要研究項目是將“廢熱能 ”回收再利用的獵能觀念，將使用具備 P-Type與 N-Type半導體特性之類金屬合金薄膜，利用熱電效應為原理，將廢熱能轉為電能，製成半導體熱電發電元件。
材料選擇使用近年來在常溫下熱電轉換效率最高的 Bi2Te3合金為基準，並改變 Te與 Bi原子數比例不同，組成為類 P-Type 與類 N-Type之兩種具半導體特性之類金屬薄膜材料。

In recent years, people realize that fossil fuel energy is not inexhaustible ;the concept of environmental protection and green energy using has gradually been paid attention to. Therefore, to seeks renewable energy and improves the efficiency of energy conversion have become the main topic of People's economic development.
The main stream of this research is the concept of energy harvesting on “waste heat energy”. Using the material of semiconductor–like semi-metal alloy thin films, employ the principle of thermoelectric effect, converted the waste heat energy into electrical energy. The applications of which is expected to replace the traditional pure semiconductor thermoelectric components.
Base on the Bi2Te3 alloy which with the highest thermoelectric conversion efficiency at room temperature in recent years, and changing the ratio of Bi and Te atoms percentage to form two kinds of semi-metal alloy thin film materials which with P-Type and N-Type properties.

致謝 I
中文摘要 II
英文摘要 IV
目錄 VII
表目錄 XI
圖目錄 XII
第一章 緒論 1
1-1 研究背景及重要性 1
1-2 研究動機及研究目的 3
第二章文獻回顧 7
2-1 熱電材料之發展歷史與應用 7
2-2 Bi2Te3材料介紹 11
2-3 熱電效應 13
2-3-1 Seebeck effect 13
2-3-2 Peltier effect 15
2-3-3 Thomson effect 16
2-4 熱電優值 18
2-5 Seebrck與導電率的關係 21
2-6 熱傳導係數與導電率之間的關係 22
2-7 改善熱電性質方式 26
2-7-1 電子晶體-聲子玻璃 26
2-7-2 半赫斯勒合金 28
2-7-3 超晶格結構熱電材料 30
2-7-4 奈米複合結構構材料 32
2-8熱電轉換效率 34
第三章實驗架構與量測儀器介紹 38
3-1實驗架構及流程 38
3-2 不同圖案樣本製作 46
3-3蒸鍍 52
3-4 量測儀器介紹 56
3-4-1 量測薄膜成分 56
3-4-2 X-射線繞射分析 58
3-4-3 量測導電率 61
3-4-4 量測霍爾效應之原理 64
3-4-5 量測Seebeck係數 66
3-4-6 量測熱容量 67
3-4-7 量測熱傳導係數量測儀器 70
第四章實驗結果與討論 73
4-1 EDS 成份分析 75
4-2 X-射線繞射分析 80
4-3 導電率 90
4-4 霍爾量測結果 93
4-5 Seebeck量測其結果圖 97
4-6 熱導率 106
4-7 熱電優值 113
4-8 元件之電性量測 117
第五章結論 125
第六章未來展望 127
第七章參考文獻 129

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