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研究生:朱育斌
研究生(外文):Yuh-Bin Chu
論文名稱:氧化亞銅奈米絲陣列之製備及其性質研究
論文名稱(外文):Fabrication and characteristics of cuprous oxide nanowires
指導教授:施漢章薛富盛薛富盛引用關係
指導教授(外文):H.C.ShihFuh-Sheng Shieu
學位類別:碩士
校院名稱:國立中興大學
系所名稱:材料工程學研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2003
畢業學年度:91
語文別:中文
論文頁數:80
中文關鍵詞:氧化鋁多孔膜版氧化亞銅奈米絲電鍍
外文關鍵詞:AAO templateCu2Onanowireelectrodeposition
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本研究是先利用二步驟陽極處理法製備出氧化鋁多孔膜,再利用電鍍的方式在氧化鋁多孔膜中沈積銅奈米絲,隨後以氫氧化鈉水溶液移除氧化鋁多孔膜,即可得到長度約4μm,直徑約80nm 高密度筆直排列的銅奈米絲陣列。
然後將銅奈米絲在大氣中以250℃、350℃、450℃、650℃四種不同的溫度下氧化12小時和銅薄膜在大氣中加熱氧化後比較,經XRD分析後發現奈米銅絲在250℃氧化12小時後,會完全氧化為氧化亞銅的結構,而銅薄膜則氧化為氧化銅的結構。造成此差異的原因推測可能是因為銅奈米絲內的晶粒的尺寸小於一臨界尺寸(25nm),故氧化後傾向於生成對稱性較高的氧化亞銅結構。
使用電鍍的方法製備出來的銅奈米絲是為多晶的結構,以250℃氧化過後,亦是形成多晶的氧化亞銅奈米絲,但氧化溫度增高至650℃後,會逐漸生成具有(111)優選方向的氧化銅的奈米絲。
藉由PL的觀察,發現氧化亞銅奈米絲,會因為量子侷限效應(quantum confinement effect),而造成PL波峰的藍位移現象 (blue -shift),此外,文中亦探討了奈米絲結構中的缺陷對PL光譜所造成影響。

「A two step anodization process」 was applied to fabricate AAO template, and copper nanowires were electrodeposited into AAO template. NaOH solution was used to remove the AAO template for the acquisition of high density ordered copper nanowire arrays.
Copper nanowires were thermally treated at 250℃,350℃,450℃and 650℃for 12 h in air and compared with the copper film prepared at the same conditions. Copper nanowire heated at 250℃ for 12 h in air totally transformed to cuprous oxide nanowire ,but Cu film heated at 300℃ for 12 h in air changed to cupric oxide film . The reason marked this difference may be attributed to the grain size effect of the copper nanowire which is smaller than a critical grain size (~25nm), hence Cu nanowires predominatly transform Cu2O nanowire of a higher symmetry (FCC).
The copper nanowires fabricated from electroplating method is of polycrystalline, even after heating at 250℃, the copper nanowires transfer to polycrystalline Cu2O nanowire . But with increasing annealing temerature to 650℃ , Cu nannowires would alternate to higher oxidation state of CuO nanowire with preferred orientation of (111).
The result of PL shows a blue-shift from 590 nm to 450nm of the Cu2O nanowires because of quantum confinement effect , such an effect is not observed in CuO , because of the of the size effect.

第一章 前 言…………………………………………………1
第二章 文獻回顧…………………………………………………5
2-1 材料的奈米特性………………………………………………5
2-2 多孔性鋁陽極處理膜簡介……………………………………9
2-3 奈米金屬絲的製備…………………………………………15
2-4 氧化亞銅特性簡介…………………………………………18
第三章 實驗步驟………………………………………………22
3-1 製作氧化鋁多孔膜…………………………………………22
3-2 製備氧化亞銅奈米絲………………………………………26
3-3 儀器分析……………………………………………………29
第四章 結果與討論…………………………………………35
4-1 電子顯微鏡觀察……………………………………………35
4-1.1氧化鋁多孔膜……………………………………………35
4-1.2 恆電位電鍍………………………………………………37
4-1.3 電子顯微鏡觀察…………………………………………44
4-1.4 場發射電子顯微鏡觀察…………………………………47
4-2 X-Ray 繞射分析……………………………………………52
4-2.1 相圖與自由能討論………………………………………54
4-2.2 銅薄膜在大氣中的氧化行為……………………………56
4-2.3 改變退火溫度對奈米銅絲的影響………………………57
4-2.4 晶粒大小對奈米絲的影響………………………………64
4-3 穿透式電子顯微鏡分析……………………………………68
4-3.1 如何分析SAD圖形………………………………………68
4-3.2單晶的選區繞射點………………………………………68
4-3.3雙晶的選區繞射點………………………………………71
4-3.4多晶的選區繞射環………………………………………73
4-4 光激發光的量測…………………………………………75
第五章 結 論……………………………………………78
參考文獻………………………………………………………80
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