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研究生: 詹家俍
Chan, Chia-Lang
論文名稱: 選擇性橫向奈米碳管之成長與其應用於溫度感測器之探討
Selective lateral growth of carbon nanotube and its application as temperature sensor
指導教授: 高騏
Gau, Chie
學位類別: 碩士
Master
系所名稱: 工學院 - 航空太空工程學系
Department of Aeronautics & Astronautics
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 105
中文關鍵詞: 奈米碳管微波電漿化學氣相沉積法溫度感測器
外文關鍵詞: carbon nanotube, temperature sensor, microwave plasma-enhanced chemical vapor deposit
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  •   本論文研究旨在利用半導體技術成長橫向奈米碳管在兩相鄰由微機電技術製造的微電極之間,目的是為了量測奈米碳管電子傳輸性質。使用微波電漿化學氣相沉積系(MPCVD)在晶片上成長橫向奈米碳管。藉由場發射掃瞄式電子顯微鏡觀察不同製程參數下所成長之橫向奈米碳管表面型貌,使用I-V量測各間隔下不同連線程度下奈米碳管之基本電性並以拉曼光譜分析奈米碳管之石墨化程度。
      為了了解使用奈米碳管當作奈米感測器的可行性,完成之感測晶片經切割接線後即置入可控溫烤箱內,經由資料擷取系統進行溫度感測器的校正,藉由奈米碳管束所組成之電阻感測單元分析其在不同環境溫度下電阻值改變的特性。
      實驗結果顯示以微波電漿化學氣相沉積法所合成的奈米碳管其室溫電阻的分佈範圍從數KΩ至數百KΩ,從I-V量測之特性曲線得知奈米碳管基本的電性為金屬性質,並且符合毆姆定律。已經量測奈米碳管感測器之電阻溫度係數(TCR),奈米碳管在同一參數下其電阻對溫度關係曲線同時呈現兩種截然不同對熱的感測特性。

      The objective of this present work is to use the semiconductor technology to grown laterally carbon nanotube between two neighboring microelectrodes that was made by MEMS techniques in order to measure the electronic transport property of the CNT. The nanotube was grown by microwave plasma-enhanced chemical vapor deposition (MPCVD) system. The SEM is used to observe the surface morphology of the carbon nanotubes grown at different synthetic process parameters. The measurement of I-V from carbon nanotube is used to find the fundamental electronic property of different carbon nanotubes grown in different gaps between two neighboring microelectrodes. The Raman spectrum measurement is used to analyze graphitization of the CNT.
      In order to check the possibility of using CNT as a nano sensor, after the fabrication and packaging processes of the CNT and the electro system, the CNTs are attempted to calibrate in an oven with the temperature control and the data acquisition system. By means of bundled CNT’s resistive elements to analyze the characteristics of the resistance variation with the surrounding temperature.
      The experimental results indicate that room temperature resistance of the carbon nanotubes, that synthesized by microwave plasma-enhanced chemical vapor deposition, typically ranges from several KΩ to several hundred KΩ. The I-V measurement of CNT indicates typical properties of metal and it obeys with Ohm’s Law. The temperature coefficient of resistance (TCR) of these CNT-based nano sensor are also measured. Even when the CNTs are synthesized under the same synthetic process parameters, resistance variation with the temperature shows two different kind of thermal sensing characteristics.

    中文摘要................................................Ⅰ 英文摘要................................................Ⅲ 目錄....................................................Ⅴ 表目錄................................................ⅤⅢ 圖目錄................................................ⅠⅩ 符號說明............................................ⅩⅠⅤ 第一章 序論 1-1簡介..................................................1 1-2研究動機與目的........................................2 第二章理論基礎與文獻回顧 2-1奈米碳管的發展........................................3 2-2奈米碳管的結構與性質..................................4 2-2-1結構與電性..........................................5 2-2-1.1單層壁奈米碳管的結構及電性........................5 2-2-1.2多層壁奈米碳管的結構及電性........................6 2-3奈米碳管的成長機制....................................6 2-4奈米碳管的製備方式....................................7 2-5奈米碳管的應用.......................................10 2-6橫向奈米碳管之研究...................................12 第三章晶片設計製作與實驗步驟 3-1實驗流程.............................................16 3-2選擇性橫向奈米碳管成長晶片之製作.....................17 3-2-1光罩設計與製作.....................................17 3-2-2橫向成長奈米碳管晶片之製程步驟.....................17 3-3選擇性橫向奈米碳管成長之實驗步驟...............18 3-4橫向成長奈米碳管晶片之相關設備.................19 3-5奈米碳管分析與鑑定之相關設備...................21 3-6溫度量測系統...................................22 3-6-1溫度感測晶片模型製作.......................22 3-6-2溫度量測與校正.............................23 第四章 結果與討論 4-1橫向奈米碳管成長之參數設計......................24 4-2催化劑厚度對合成橫向奈米碳管之影響.............26 4-3甲烷百分比對合成橫向奈米碳管之影響.............27 4-4氮氣對合成橫向奈米碳管之影響...................31 4-5成長時間對合成橫向奈米碳管之影響...............34 4-6橫向奈米碳管應用於溫度感測器之探討.............37 第五章結論..............................................40 參考文獻................................................42 圖表....................................................45

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