研究生: |
蘇信昌 |
---|---|
論文名稱: |
以網印法製備奈米碳管場發射陰極材料並探討電極邊緣效應對場發射特性之影響 |
指導教授: | 戴念華 |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 材料科學工程學系 Materials Science and Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 85 |
中文關鍵詞: | 多壁奈米碳管 、單壁奈米碳管 、網印法 、場發射 |
相關次數: | 點閱:3 下載:0 |
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本研究是以多壁奈米碳管以及單壁奈米碳管調配出來的漿料,利用網印法製備場發射陰極材料。在實驗中除了探討不同形狀的陰極圖形以及不同種類的基板對場發射特性的影響之外,也針對電極形狀以及基板的材料特性作了一些電場的模擬。實驗結果發現,陰極電極的邊緣是最容易發射電子的位置,運用此一特性設計出來的網狀的陰極圖形不僅有良好的場發射特性,也可以用來製作大面積的場發射體。
除此之外,也發現基板種類確實會影響場發射性能,其中以氧化鋁(Al2O3)基板為最佳。在電場模擬方面,結果顯示電極的邊緣受到的電場強度最強,邊緣角度如果越接近垂直,其電場加強效應會越大;在基板方面,如果基板的介電常數越小,電極邊緣的電場加強效應也會隨著變大。
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