研究生: |
徐健騰 Chien Teng Hsu |
---|---|
論文名稱: |
利用雷射剝蝕法-感應耦合電漿-質譜儀(LA-ICP-MS)分析半導體製程之沈積薄膜的研究 Direct analysis of deposited thin-film in semiconductor manufacturing process by LA-ICP-MS |
指導教授: |
楊末雄
M. H. Yang |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
原子科學院 - 生醫工程與環境科學系 Department of Biomedical Engineering and Environmental Sciences |
畢業學年度: | 87 |
語文別: | 中文 |
論文頁數: | 110 |
中文關鍵詞: | 雷射剝蝕法-感應耦合電漿-質譜儀 、光阻薄膜 、鋁-矽-銅薄膜 |
外文關鍵詞: | LA-ICP-MS, Photoresist |
相關次數: | 點閱:128 下載:0 |
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本研究以雷射剝蝕法-感應耦合電漿-質譜儀(LA-ICP-MS) 探討半導體製程中沈積薄膜的分析方法,並評估此分析技術應用於製程中沈積薄膜的可行性。實驗分別針對有機高分子光阻薄膜和鋁-矽-銅無機金屬薄膜兩種樣品進行探討。
光阻膜在半導體工業的微影製程中扮演一個很重要的角色。對於有機光阻膜的分析,除了儀器最適化條件的探討外,並尋求最佳化的內標準元素以期提升分析訊號之精密度。分析的元素包括有Al、Cu、Pt、Au、Th 及U等。結果顯示,以Co及Tl 為內標準元素校正分析訊號,可有效地提昇分析的精密度;各元素的回收率亦可在83~105 % 之間。偵測極限,除了Al在ppm之外,其他各分析元素均約在數十到數百ppb之間。
鋁是半導體製程中目前最普遍使用的一種導線材料。基於物性的考量,在鋁中會添加 0.5∼4 %的銅。本研究探討以LA-ICP-MS建立鋁-矽-銅薄膜的成份分析的可行性。首先針對雷射能量及離焦距離對薄膜樣品的剝蝕效率進行探討,最後嘗試以塊狀標準品建立檢量線進行定量分析。由於塊狀標準品與薄膜樣品存在著表面型態與物理性質的重大差異,本研究利用標準品表面拋光處理配合內標準法,來克服分析上的問題。最後結果顯示,所得結果與濕式方法的定量結果頗為接近,證明所建立的方法具有相當的可行性。
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