臺灣博碩士論文加值系統

由於氧化鋅(ZnO)具有獨特的性質使得它可以使用在許多不同方面的應用，氧化鋅在近年來已成為了熱門的研究材料之一。氧化鋅擁有寬大的能隙(3.37 eV)和大的激子結合能(60 meV)，因此在光電子及元件中經常使用氧化鋅來當作其材料，如固態照明的白光和紅光和太陽能電池的透明電極材料。氧化鋅為n-type的本質半導體，利用摻雜的方式來改變氧化鋅的發光特性。本論文利用簡易的水熱法方式，在ITO基板上成長銦摻雜的氧化鋅奈米結構，並吸附染料(N-719)後封裝成染料敏化太陽能電池(Dye Sensitized Solar Cell)。
實驗藉由X射線繞射(X-ray diffraction)、掃描式電子顯微鏡(Scanning electron microscope)和太陽光模擬器來量測氧化鋅奈米結構的光電特性和染料電池的光電轉換效率。此外，我們也藉由變溫光激發光(photoluminescence , PL)量測氧化鋅奈米結構；利用這些量測工具來得知晶體結構上的不同會影響到元件特性，並且利用德拜模型來分析結構的不同是如何影響元件特性。

Zinc oxide (ZnO) has the unique nature and various application. ZnO is a distinct kind of metal oxide semiconductor with a wide direct-band gap of 3.37 eV and large exciton binding energy (60 meV). Therefore it is appropriate to produce the opto-electronic applications, such as solid state lighting and solar cells. ZnO is the n-type intrinsic semiconductor, so we used the other way to change ZnO optical character by doping.
In this experiment, we used the simple hydrothermal method to grow indium-doped ZnO nanostructure on indium tin oxide glass(ITO). Then the sample were respective by immersing in N-719 dye solution and further make the dye-sensitized solar cell application. We analyzed structure, optical characteristics of the ZnO nanomaterials, and its ability to convert solar energy to electrical energy in the DSSC by using the X-ray diffraction (XRD), scanning electron microscope (SEM) and the solar simulator. In addition, we also studied the photovoltaic performances of ZnO nanostructured films in different temperature by using photoluminescence (PL) spectra. We use these measuring instruments to know that the different nano structures will effect different device characteristic, and we analysis Debye temperature to find out how different nsno structure effect different device characteristic.

目錄
指導教授推薦書
口試委員會審定書
致謝 iii
中文摘要 iv
Abstract v
目錄 vi
圖目錄 ix
表目錄 xi
第一章 緒論 -1-
1-1前言 -1-
1-2氧化鋅相關製程文獻 -2-
1-2-1化學氣相沉積法 -3-
1-2-2電子束蒸鍍法 -3-
1-2-3模板法 -3-
1-2-4溶膠凝膠法... -4-
1-2-5水熱法 -4-
1-3研究動機 -5-
第二章 理論與實驗 -6-
2-1氧化鋅基本特性 -6-
2-2實驗步驟流程 -8-
2-3掃描電子顯微鏡(SEM) -10-
2-4 X光繞射儀器(XRD) -11-
2-5能量散射光譜儀原理(EDS) -11-
2-6 太陽光模擬器 -12-
2-7光激發螢光量測原理(Photoluminescence) -12-
2-8 德拜比熱理論 (Debye’s theory of specific heat) -13-
第三章 實驗結果與討論 -20-
3-1掃描式電子顯微鏡分析 -20-
3-1-1 SEM分析 -20-
3-1-2 EDS分析 -20-
3-2 X光繞射(XRD)分析 -21-
3-2-1摻雜銦之氧化鋅奈米結構 -21-
3-3太陽能效率量測 -21-
3-4光激發光量測分析 -22-
3-4-1變溫光激發光半高寬分析 -23-
3-4-2變溫光激發螢光峰值能量分析 -23-
3-5 德拜溫度分析 -24-
3-6 費米能階分析 -27-
第四章 結論 -45-
參考文獻 -46-


圖目錄
圖2-1氧化鋅六方纖維鋅礦結構 -15-
圖2-2氧化鋅立方閃鋅礦結構 -16-
圖2-3染料敏化太陽能電池結構 -17-
圖2-4 實驗流程 -18-
圖2-5 XRD之布拉格定律示意圖 -19-
圖3-1 SEM 分析(在ITO 基板上成長時間為一至四小時於倍率一萬下的銦摻雜氧化鋅結構) -29-
圖3-1 XRD 分析(在ITO 基板上成長時間為一至四小時之銦摻雜於氧化鋅結構) -30-
圖3-3-1 染料敏化太陽能電池常溫之電流-電壓圖 -31-
圖3-3-2染料敏化太陽能電池高溫(120 °C)之電流-電壓圖 -32-
圖3-3-3 染料敏化太陽能電池之效率圖 -33-
圖3-4-1 氧化鋅之PL光譜圖 -34-
圖3-4-2 銦參雜氧化鋅半高寬與溫度關係圖 -35-
圖3-4-3 銦參雜氧化鋅峰值能量與溫度關係圖 -36-
圖3-5-1 氧化鋅薄膜成長時間與德拜溫度關係圖 -37-
圖3-5-2 氧化鋅薄膜成長時間與光子-聲子鍵結能量關係圖 -38-
圖3-5-3 氧化鋅薄膜變溫光激發螢光量測與德拜溫度的關係圖 -39-
圖3-6-1 銦摻雜氧化鋅之費米能階圖 -40-
圖3-6-2 銦摻雜氧化鋅費米能階-德拜溫度與彈性係數於費米-狄拉克分布(Fermi-Dirac distribution)圖 -41-


表目錄
表3-1 EDS成份分析銦摻雜氧化鋅結構參數表 -42-
表3-2銦摻雜氧化鋅之不同成長時間的效率參數表 -43-
表3-3銦摻雜氧化鋅之不同溫度下的效率參數表 -44-

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