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論文名稱 Title |
利用時變兆赫波研究極性與非極性氧化鋅之光學特性 Study of optical properties of polar and non-polar ZnO using Terahertz time domain spectroscopy |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
63 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2016-07-27 |
繳交日期 Date of Submission |
2016-09-07 |
關鍵字 Keywords |
導電率、德魯德模型、退火、折射率、兆赫波時域、氧化鋅 annealing, THz-TDS, Drude model, ZnO, refractive index, conductivity |
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統計 Statistics |
本論文已被瀏覽 5654 次,被下載 0 次 The thesis/dissertation has been browsed 5654 times, has been downloaded 0 times. |
中文摘要 |
在本論文中我們研究C平面生長的氧化鋅與A平面的氧化鋅在兆赫波段下的光學性質,A平面生長的氧化鋅做熱退火,觀察退火前後光學性質的變化。分別計算出各種平面氧化鋅的折射率與消光係數,進而算出導電率,最後以Drude model做擬合,得到載子濃度和遷移率,而a平面的氧化鋅經過熱退火,載子濃度會明顯增加。 |
Abstract |
In this thesis we have studied the frequency dependent optical properties for polar and non-polar ZnO. We found the signals in the same axis perform identically and have similar data.We observed A-plane ZnO optical properties before and after annealing.Calculating refractive index, extinction coefficient and conductivity.Finally,we use Drude model to fit data and obtain carrier concentration and mobility. In A-plane ZnO case,there is a mobility increase before and after annealing. |
目次 Table of Contents |
目錄 論文審定書 i 致謝 ii 摘要 iii Abstract iv 第一章 導論 1 1-1前言 1 1-2 兆赫波發展史 2 1-3產生兆赫波 3 1-4 文獻探討-兆赫波對樣品之相關研究 5 第二章 實驗原理 10 2-1光電導偶極天線產生及偵測兆赫波原理 10 2-2 光電導偶極天線產生及偵測兆赫波原理 10 2-3敘述ZnTe、Balance detector 13 2-4實驗數據分析原理 14 第三章 實驗系統架設 19 3-1光路架設 19 3-2詳細介紹Mai Tai Laser以及PC-antenna 22 3-3介紹鎖相放大器(Lock-in,SR850) 24 3-4詳細說明Balance Detector 25 第四章 樣品介紹與實驗結果 26 4-1 樣品介紹(c-plane ZnO and a-plane ZnO) 26 4-2 實驗結果 28 第五章 結論 57 參考文獻 58 |
參考文獻 References |
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