研究生: |
彭展崢 Jhan-Jheng Peng |
---|---|
論文名稱: |
使用濺鍍法成長矽奈米結構 The growth of silicon nanostructure by sputter technique |
指導教授: |
周賢鎧
Shyankay Jou |
口試委員: |
胡毅
Yi Hu 鄭偉鈞 Wei Cheng |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2007 |
畢業學年度: | 95 |
語文別: | 中文 |
論文頁數: | 110 |
中文關鍵詞: | 矽奈米錐 、矽奈米線 、濺鍍法 |
外文關鍵詞: | silicon nanocones, silicon nanowires, sputtering |
相關次數: | 點閱:271 下載:2 |
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本論文研究的內容主要分成三個部分。第一部份是在矽基材上製備所需的金奈米顆粒分佈,本實驗是先利用鍍金機在基材上鍍上一層金的薄膜後,再藉由控制退火的溫度、時間和金薄膜的厚度,來完成金奈米顆粒的製備。
實驗的第二部份是在石英管爐中藉由熱處理的過程,分別以不同的溫度、時間、氣氛與金膜厚度來成長矽奈米線,並藉由控制反應參數,來探討對成長矽奈米線之影響。實驗結果發現在金膜厚度為20mA 25sec的條件下,通入1000sccm流量的Ar和Ar-20%H2,並在950℃下成長30min,可得到密度最高、分佈性均勻的矽奈米線。
實驗的第三部份是利用已製備好金奈米顆粒分佈的試片,以磁控式濺鍍法成長矽奈米結構,並藉由改變濺鍍功率、基材溫度、反應氣氛和金膜厚度等條件來探討這些反應參數對成長矽奈米結構的影響。當使用RF20W、Ar:H2 = 4:16 sccm、鍍膜壓力1.7x10-2 Torr與基材溫度450℃下,可以成功成長出矽奈米錐結構,本論文進一步使用掃瞄式電子顯微鏡觀察矽奈米錐的表面型態,並以光致發光光譜儀來量測矽奈米錐的發光性質。
In this thesis, the study is mainly divided into three parts. The first part of study focuses on the fabrication of gold nanoparticles on silicon substrate. In this study, the gold film was deposited by sputtering. The formation of gold nanoparticles was controlled by annealing temperature, time and thickness of initial gold film.
The second part of study focuses on annealing of gold-coated Si substrate in quartz furnace. The growth of silicon nanowires were controlled by different temperature, time, atmosphere and thickness of initial gold film, so as to probe into the growth of silicon nanowires. According to the result, the well distribution and high density of silicon nanowires were generated from the substrate with a gold film previously deposited with 20mA of sputtering current and 25sec duration. The flow rates of argon and argon with 20% hydrogen was 1000 sccm flow generating silicon nanowires, and the growth temperature and time are 950℃ and 30 minutes.
The third part of study focuses on the fabrication of silicon nanocones by a RF sputter deposition technique. The growth of silicon nanocones were controlled by sputtering power, substrate temperature, atmosphere and thickness of initial gold film, so as to probe into the growth of silicon nanocones. A favorable condition for growing silicon nanocones was found with a sputtering power of 20 Watts, the gas flow of argon and hydrogen as 4 and 16 sccm, the sputtering pressure of 1.7x10-2 Torr, and substrate temperature of 450℃. The surface morphology was analyzed by SEM and the optical property has been studied by photoluminescence.
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