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研究生:陳昀佐
研究生(外文):Yun- Tso Chen
論文名稱:IrSe2微針狀物之電學與拉曼特徵分析
論文名稱(外文):Electrical properties and Raman characterization of needle-like IrSe2 single crystals
指導教授:程光蛟
指導教授(外文):Kong-Kau Tiong
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:中文
論文頁數:49
中文關鍵詞:二硒化銥
外文關鍵詞:IrSe2
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  • 被引用被引用:0
  • 點閱點閱:155
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  • 收藏至我的研究室書目清單書目收藏:1
摘 要

本論文試圖由化學氣相傳導法(chemical vapor transport method),並使用ICl3為傳導劑來成長IrSe2 單晶,來得到IrSe2針狀物樣品。由X光繞射技術(XRD),IrSe2 針狀物其晶體結構屬於斜方(orthorhombic)晶系。在電學實驗方面,IrSe2針狀物的溫變導電率實驗,其溫度範圍為20K到300K。由實驗結果,溫變導電率皆高於文獻上的結果。我們也由拉曼散射實驗來研究樣品的結構,並將量測結果與文獻上的資料做比較,以確認與比較主要的拉曼模態
Abstract

The synthesis of IrSe2 single crystals was undertaken using the method of chemical vapor transport with ICl3 as the transporting agent. Needle-like IrSe2 single crystals were obtained. From the X-ray diffraction patterns, the needle-like IrSe2 rods are found to crystallize with orthorhombic structure. The electrical properties of the needle-like IrSe2 have been studied via temperature dependent conductivity measurements in the range 20 to 300 K. The conductivities of the presently synthesized samples are higher than the literature values over the entire temperature range. We have also performed Raman scattering experiments to study the vibrational properties of the samples. The observed major Raman modes have been identified and compared with the literature values.
目 錄
誌 謝 Ⅰ
中文摘要 Ⅱ
英文摘要 Ⅲ
目 錄 Ⅳ
圖 索 引 Ⅵ
表 索 引 Ⅷ
第一章 緒論 1
1.1 IrSe2的晶體結構 3
1.2 IrSe2針狀物的電學及拉曼特徵分析 4
1.2.1 IrSe2的電學特性 4
1.2.2 IrSe2的拉曼特徵分析 5


第二章 二硒化銥(IrSe2)針狀物晶體成長及分析 6
2.1 二硒化銥(IrSe2)晶體的成長 6
2.1.1 真空系統 7
2.1.2 長晶反應系統 8
2.1.3 單晶的成長程序 8
2.1.4 IrSe2針狀物的照片及清洗方法 11
2.2 二硒化銥(IrSe2)針狀物之成份分析 13
2.2.1 掃描式電子顯微鏡(SEM)及EDX簡介 13
2.2.2 結果與討論 14
第三章 二硒化銥(IrSe2)針狀物實驗方法及原理 16
3.1 X光繞射分析 16
3.1.1 X光繞射分析原理 16
3.2 電特性的實驗與分析 18
3.2.1 樣品製作 19
3.2.2 電阻率實驗 19
3.3 拉曼散射系統量測 22
3.3.1 拉曼(Raman)散射原理簡介 22
3.3.2 拉曼光譜原理 23
3.3.3 拉曼光譜的應用 26
3.4 拉曼光譜系統與量測方法概述 27
第四章 結果與討論 29
4.1 X光繞射分析結果與討論 30
4.2 二硒化銥(IrSe2)針狀物電傳導量測結果與討論 35
4.3 拉曼散射譜線結果與討論 39
第五章 結論 44
參考文獻 46
參考文獻
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