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研究生： 陳藝友
Chen, Yi-You
論文名稱： 微波電漿輔助化學氣相沉積法成長碳材料應用於場發射手持式常壓電漿產生裝置之設計研究
Study on the field emission enhanced handheld atmospheric pressure plasma jet based on nano-carbon materials by MPCVD
指導教授： 蔡宏營
Tsai, Hung-Yin
口試委員: 李紫原
Lee, Chi-Young
葉孟考
Yeh, Meng-Kao
學位類別： 碩士
Master
系所名稱： 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年： 2017
畢業學年度： 105
語文別： 中文
論文頁數： 127
中文關鍵詞： 微波電漿化學氣相沉積法 、奈米碳材料 、場發射 、常壓電漿 、電漿裝置 、表面處理
外文關鍵詞： Microwave plasma chemical vapor deposition, Carbon nanomaterials, Field emission, Atmospheric plasma, Plasma device, Surface treatment
相關次數： 點閱：2  下載：0 
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    • 本研究開發之手持式常壓電漿產生裝置，具有體積小，便於握持，對於進行物件表面處理可擁有靈活之操作，此設計亦可結合於既有設備之上成為外掛裝置，拓展其他用途。
    本研究開發之場發射輔助常壓電漿產生裝置擁有對物件表面進行表面處理之能力，透過對銅箔表面分別進行1與3分鐘之電漿處理後，使銅箔之表面性質由疏水轉化為親水特性。
    本研究透過結合奈米碳材料場發射陰極端與自行設計之手持式常壓電漿產生系統，利用場發射陰極端提供的電子，增加氣體分子碰撞機率，使氣體能於較低功率下產生崩潰(breakdown)，達到節省能源之目的。
    本研究利用微波電漿化學氣相沉積系統(Microwave plasma chemical vapor deposition system, MPCVD)，於大面積矽基板上沉積具有良好場發射特性之奈米碳管與奈米碳片球場發射陰極材料，亦透過調整不同觸媒濃度設定，成長奈米碳管複合奈米碳片球場發射陰極材料，本研究所成長之一步驟奈米碳管複合奈米碳片球場發射陰極材料擁有2.07 V/μm低起始電場(Turn-on filed)與2.80 V/μm低門檻電場(Threshold field)，使場發射陰極端在結合常壓電漿產生裝置後能發揮最大效益。

    The purpose of this study is to fabricate a handheld field emission enhanced atmospheric pressure plasma jet based on microwave plasma chemical vapor deposition synthesized carbon material.
    The device which designed in this study has the advantages of small size, easy to operate and the ability to modify the surface of objects.
    There are many advantages of atmospheric pressure plasma, such as no need for expensive vacuum equipment and no limit by chamber size that can increase the efficiency of the process. However, the energy consumption may be a big issue.
    Therefore, a handheld device combined field emission theory with atmospheric pressure plasma technology has been fabricated in this study. It uses the electrons that emit from a carbon material to collide the atom of gas then reduces the breakdown power on processing gas and successfully increases the efficiency of plasma generation.
    A hybrid material consisting of carbon nanotubes(CNTs) and carbon nanoflake balls(CNFBs) were successfully synthesized on silicon substrates with the size of 1.5×1.5 cm2 by microwave plasma chemical vapor deposition system.
    The carbon hybrid material exhibited excellent field emission properties, with its low turn-on field 2.07 V/μm and low threshold field 2.80 V/μm.

    摘要 I Abstract II 致謝 III 目錄 VI 圖目錄 X 表目錄 XVIII 第一章 緒論 1 1.1 前言 1 1.2 研究動機 1 第二章 文獻回顧 3 2.1 電漿 3 2.1.1 電漿基本介紹 3 2.1.2 非熱平衡電漿與熱平衡電漿 7 2.1.3 常壓電漿源簡介 8 2.1.4 常壓電漿源種類 9 2.2 場發射效應 14 2.2.1 場發射基礎理論 14 2.2.2 發射端尺寸效應 16 2.2.3 場發射遮蔽效應 22 2.3 奈米碳管 27 2.3.1 奈米碳管簡介 27 2.3.2 奈米碳管的製備方式 29 2.3.3 奈米碳管的場發射特性 31 2.4 石墨烯 32 2.4.1 石墨烯簡介 32 2.4.2 石墨烯的製備方法 33 2.4.3 石墨烯的場發射特性 40 第三章 研究方法 45 3.1 研究流程 45 3.2 常壓電漿系統設計開發 46 3.2.1 手持式場發射輔助常壓電漿產生裝置設計 46 3.2.2 氣體供給系統 50 3.2.3 電源供應器 50 3.2.4 電漿測試參數 51 3.2.5 電漿檢測 51 3.2.6 電漿表面處理 52 3.3 場發射陰極材料成長 52 3.3.1 微波電漿化學氣相沉積系統 52 3.3.2 場發射量測儀 54 3.3.3 掃描式電子顯微鏡 56 3.3.4 實驗藥品與氣體 57 3.4 實驗製程 58 3.4.1 試片前處理 58 3.4.2 溶膠凝膠法製備觸媒與塗佈 58 3.4.3 成長奈米碳材料 59 第四章 研究結果與討論 62 4.1 奈米碳材料成長 62 4.1.1 奈米碳管 63 4.1.2 奈米碳片球 65 4.1.3 兩步驟奈米碳管複合奈米碳片球 67 4.1.4 一步驟奈米碳管複合奈米碳片球 71 4.2 奈米碳材料之場發射特性 73 4.2.1 奈米碳管場發射特性 73 4.2.2 奈米碳片球場發射特性 75 4.2.3 兩步驟奈米碳管複合奈米碳片球場發射特性 76 4.2.4 一步驟奈米碳管複合奈米碳片球場發射特性 79 4.3 場發射輔助常壓電漿產生裝置 83 4.3.1 電源供應頻率與電漿產生之關係 83 4.3.2 純銅陰極之電漿產生結果 86 4.3.3 CNFB-CNT-1s陰極之電漿產生結果 94 4.3.4 貼附銅膠帶矽片陰極之電漿產生結果 107 4.3.5 電漿表面處理 115 第五章 結論與未來展望 120 5.1 結論 120 5.2 未來展望 121 參考文獻 123

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