以有機奈米線為模板製備金屬奈米管｜國立清華大學博碩士論文庫

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研究生：	張鐸耀 To-Yao Chang
論文名稱：	以有機奈米線為模板製備金屬奈米管 Fabrication of Metallic Nanotubes by Using Organic Nanowires as the Template
指導教授：	彭宗平 Tsong-Pyng Perng
口試委員:
學位類別：	碩士 Master
系所名稱：	工學院 - 材料科學工程學系 Materials Science and Engineering
論文出版年：	2006
畢業學年度：	94
語文別：	英文
論文頁數：	70
中文關鍵詞：	有機金屬化合物、奈米金屬管、濺鍍、熱處理
外文關鍵詞：	AlQ3, Metal nanotubes, Sputter, Heat treatment
相關次數：	點閱：1 下載：0
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自從1991年Iijima發現奈米碳管以來，已經有許許多多的奈米管如無機奈米管以及金屬奈米管，在這近十年內被積極的研究。此外，一種用於有機發光二極體的有機金屬化合物AlQ3 也在近幾年被研究出可以利用熱蒸鍍法製備奈米線及奈米晶。甚至只要透過熱處理就可以在AlQ3薄膜上長出一維的奈米線。
本論文旨在利用薄膜熱處理過後長出之AlQ3奈米線作為模板，以物理氣相沉積法製造出金屬奈米管，包括濺鍍鍍覆金與白金於奈米線上，以蒸鍍法鍍覆鎳與鋁，再利用TEM及SEM來分析觀察其表面形貌和結構。並且以島狀成長機制來描述解釋在AlQ3奈米線上生成之金屬奈米管。此外，更進一步利用退火處理使Au以及Pt金屬奈米管的表面平整化，再以TEM及SEM分析觀察其表面結構和形貌之變化。雖然尚未藉此獲得預期之金屬奈米管，但亦提出假設來解釋退火之後所觀察到的結果。

Since Iijima discovered the carbon nanotubes in 1991, other nanotubes such as inorganic and metallic nanotubes have also been intensively studied in the last decade. In recent years, it has been found that some AlQ3 nanostructures like nanowires and nanoparticles can be made by thermal evaporation method. It was also found that AlQ3 nanowires could be formed after annealing of the film.
In this study, some metal nanotubes were fabricated by physical vapor deposition using AlQ3 nanowires, which were prepared by heat treatment of the film, as the template. Sputtering was used to deposit Au and Pt layer on nanowires, and thermal evaporation was used for the Ni and Al deposition. The morphology and structure of the metal layer were observed by SEM and TEM. One of the thin-film growth modes, islands mode, was used to explain the formation of the metal layer on AlQ3 nanowires. In addition, the annealing process was used to smoother the surface of Au and Pt layer, and the structure and morphology were analyzed by SEM and TEM again. Although no metal nanotubes have been obtained on expected, a new postulate is proposed to illustrate the above results.

Table of Contents
摘要    I
ABSTRACT    II
誌謝    III
TABLE OF CONTENTS    V
CHAPTER 1    INTRODUCTION    1
1 Nanoscience and nanotechnology    1
2 Aluminum 8-hydroxyquinoline (AlQ3) nanostructured materials    5
3 Nanotubes    5
CHAPTER 2    LITERATURE REVIEW    9
1 Basic Properties of AlQ3    9
1.1 Basic Properties of AlQ3    9
1.2 Fabrication and heat treatment of AlQ3 nanostructures    14
2 Types of nanotubes    14
2.1 Carbon nanotubes (CNTs)    14
2.2 TiO2 nanotubes    18
2.3 Metallic nanotubes    21
3 Comparison of AlQ3 nanowires with other templates in existence    22
4 Metal deposition methods    24
CHAPTER 3    EXPERIMENTAL PROCEDURES    28
1 Preparation of AlQ3 nanowires    28
1.1 Preparation of AlQ3 thin film    28
1.2 Heat treatment of AlQ3 thin film    28
2 Metal deposition on AlQ3 nanowires    30
2.1 Sputtering    30
2.2 Thermal evaporation    30
3 Heat treatment of metal coated AlQ3 nanowires    33
4 Analysis of AlQ3 nanowires and metallic nanotubes    33
4.1 Field Emission Gun Scanning Electron Microscopy (FEGSEM)    33
4.2 Transmission Electron Microscopy (TEM)    33
CHAPTER 4    RESULTS AND DISCUSSION    35
1 As-prepared AlQ3 nanowires    35
2 Metal deposition    39
2.1 Sputtering    39
2.2 Thermal evaporation    45
2.3 Formation theory of thin film    45
3 Annealed metal nanotubes    51
CHAPTER 5    CONCLUSIONS    65
REFERENCES    67

                                

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