鋁金屬誘發多晶矽之研究

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姓名

鄭春皇(Chun-Huang Cheng) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

鋁金屬誘發多晶矽之研究
(The research of polycrystalline silicon prepared by aluminum induced crystallization)

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摘要(中)

近年來，低溫多晶矽(LTPS)引起了很多人的關注。本研究旨在探討電子槍蒸鍍非晶矽膜層與射頻磁控濺鍍非晶矽膜層不同的膜質結構對鋁金屬誘發結晶矽製程的影響。首先在室溫下，利用熱電阻蒸鍍系統將鋁金屬蒸鍍到玻璃基板上，再利用電子槍蒸鍍系統或射頻濺鍍系統將非晶矽鍍到玻璃基板上，以形成glass/Al/a-Si的樣品結構，之後再使用高溫爐將樣品做熱退火處理，分別討論不同熱退火溫度與時間對矽薄膜結晶的影響。
實驗中發現，在相同的熱退火時間12小時下，電子槍蒸鍍非晶矽製程熱退火溫度(500℃以上)要比射頻磁控濺鍍非晶矽製程熱退火溫度(400℃以上)高，才會有較明顯的矽結晶現象，主要結晶晶向皆為(111)。而在相同的熱退火溫度550℃下，電子槍蒸鍍非晶矽製程熱退火時間(30分鐘以上)要比射頻磁控濺鍍非晶矽製程熱退火時間(10分鐘以上)長，才會有較明顯的矽結晶現象。

摘要(英)

In recent years, low temperature polycrystalline silicon(LTPS) attracted much attention. In this work, we investigated the effect of different silicon deposition techniques, including e-beam evaporation and RF magnetron sputtering during the process of aluminum-induced crystallization(AIC) of a-Si. First, Al layers were deposited on glass substrates at room temperature by the resistive heator. Then a-Si layers were deposited on Al layers by e-beam evaporation or RF magnetron sputtering to make glass/Al/a-Si samples. The samples were annealed in a furnace and analyzed how different annealing temperature and time influenced a-Si crystallization.
The results revealed that under the same annealing time (12 hours), the procedure of a-Si prepared by e-beam evaporation(＞500℃) had higher annealing temperature than the procedure of a-Si prepared by RF magnetron sputtering(＞400℃) to make crystalline silicon which had preferred orientation(111). Furthermore, at the same annealing temperature(550℃), the procedure of a-Si prepared by e-beam evaporation(＞30 min) had longer annealing time than the procedure of a-Si prepared by RF magnetron sputtering(＞10min) to make crystalline silicon.

關鍵字(中)

★ 鋁金屬誘發結晶
★ 熱電阻蒸鍍
★ 射頻磁控濺鍍
★ 電子槍蒸鍍
★ 低溫多晶矽

關鍵字(英)

★ low temperature polycrystalline silicon
★ aluminum-induced crystallization
★ resistive heator
★ RF magnetron sputtering
★ e-beam evaporation

論文目次

第一章緒論....................................1
1-1 前言……………………………………………………….1
1-2 多晶矽的結晶方式……………………………………….3
1-2-1 直接沉積多晶矽……………………………………3
1-2-2 固相結晶法…………………………………………3
1-2-3 準分子雷射退火法…………………………………4
1-2-4 金屬誘發結晶法……………………………………6
1-3 研究動機………………………………………………….7
第二章文獻回顧與基本理論......................8
2-1 金屬誘發結晶法………………………………………….8
2-2 鋁金屬誘發結晶的機制………………………………….9
2-3 蒸鍍原理…………………………………………………10
2-3-1 熱電阻蒸鍍原理…………………………………..10
2-3-2 電子束蒸鍍原理…………………………………..11
2-4 濺鍍原理………………………………………………...12
2-4-1 電漿原理…………………………………………..12
2-4-2 射頻磁控濺鍍原理………………………………..13
第三章實驗儀器與內容.........................16
3-1 製鍍儀器………………………………………………...16
3-1-1 電子槍蒸鍍系統…………………………………..16
3-1-2 射頻磁控濺鍍系統………………………………..17
3-1-3 高溫方型爐………………………………………..18
3-2 量測分析儀器…………………………………………....19
3-2-1 X光繞射儀………………………………………....19
3-2-2 拉曼光譜儀……………………………………….. 21
3-2-3 冷場發射掃描式電子顯微鏡/微區元素能量分析儀
……………………………………………………....23
3-3 實驗過程………………………………………………… 24
第四章實驗結果與討論..........................27
4-1非晶矽直接熱退火(無鋁金屬膜層)……………………...27
4-2鋁金屬誘發結晶矽(電子槍蒸鍍非晶矽膜層)…………...31
4-2-1改變退火溫度………………………………………31
4-2-2改變退火時間………………………………………39
4-3鋁金屬誘發結晶矽(射頻磁控濺鍍非晶矽膜層)………...45
4-3-1改變退火溫度………………………………………45
4-3-2改變退火時間………………………………………52
4-4實驗結果討論………………………………………….....58
第五章結論....................................60
參考文獻.........................................61

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指導教授

李正中(Cheng-Chung Lee)

審核日期

2006-10-15

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