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博碩士論文 etd-0807116-091720 詳細資訊
Title page for etd-0807116-091720
論文名稱
Title
以兆赫波時間解析系統研究極性與非極性氧化鋅在不同溫度下之光學特性
Temperature dependent study of optical properties of polar and non-polar ZnO using Terahertz time domain spectroscopy
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
69
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2016-07-27
繳交日期
Date of Submission
2016-09-07
關鍵字
Keywords
載子濃度、載子遷移率、導電率、德汝德模型、兆赫波、折射率、氧化鋅
conductivity, Terahertz, carrier density, Drude model, mobility, refractive, ZnO
統計
Statistics
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中文摘要
本論文中用光電導偶極天線(PC antenna)產生兆赫波,並以兆赫波時間解析系統(Terahertz Time-Domain Spectroscopy)來研究C面、A面和M面氧化鋅(ZnO)樣品,分別在不同溫度下計算出各種平面氧化鋅的複數折射率(complex refractive index)與複數導電率(complex conductivity)。再以德汝德模型(Drude model)對實驗數據做擬合(fitting)計算出載子濃度(carrier density)和載子遷移率(mobility)。發現不同溫度對C面和平行C軸的A面氧化鋅光學性質影響不大。退火後的M面氧化鋅的載子遷移率會大於退火前。
Abstract
We use PC-antenna to generate the THz and study the optical properties of polar and nonpolar ZnO using Terahertz Time Domain system. In different temperature, we calculate the complex refractive index and conductivity.We use Drude model to obtain the parameters of carrier density and mobility by fitting data. Temperature dependent has little effect on optical properties of c-plane ZnO and a-plane ZnO. Mobility of annealed m-plane ZnO is larger than unannealed's.
目次 Table of Contents
論文審定書 i
致謝 ii
摘要 iii
Abstract iv
圖目錄 v
表目錄 vii
第一章導論 1
1-1前言,,,, 1
1-2 兆赫波歷史 2
1-3簡述兆赫波產生方式 3
1-4 ZnO結構與基本特性 4
1-5 文獻探討-利用兆赫波對樣品之相關研究 5
第二章 實驗原理 9
2-1光電導偶極天線產生及偵測兆赫波原理 9
2-2 光電導偶極天線產生及偵測兆赫波原理推導 9
2-3自由空間電光取樣偵測方法及推導 13
2-4實驗數據分析原理 15
第三章 實驗系統架設 20
3-1實驗光路架設 20
3-2Mai Tai Laser以及PC-antenna 22
3-3鎖相放大器(Lock-in,SR850) 24
3-4 Balance Detector 26
第四章 樣品介紹與實驗結果 27
4-1 樣品介紹 27
4-2 實驗結果 31
第五章 結論 57
參考文獻 58
參考文獻 References
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