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研究生：	張志謙 Zhang, Zhi-Qian
論文名稱：	硫化鋅螢光粉與奈米線合成及其特性探討 The Synthesizing Technology and Characteristics of ZnS-based Phosphors and Nanowires
指導教授：	朱聖緣 Chu, Sheng-Yuan
學位類別：	碩士 Master
系所名稱：	電機資訊學院 - 電機工程學系 Department of Electrical Engineering
論文出版年：	2004
畢業學年度：	92
語文別：	中文
論文頁數：	85
中文關鍵詞：	硫化鋅、奈米線
外文關鍵詞：	ZnS, nanowire
相關次數：	點閱：58 下載：5
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在現今的光電材料中，硫化鋅具備有很寬的能帶差異(3.66 eV)，且是直接能隙材料，在光電材料上有很大的發展潛力，例如可應用在太陽能電池、紅外線光電元件等。硫化鋅於光致發光與電致發光上也有很佳的特性，可應用在雷射、光感測器、顯示器等。論文中採用固態燒結法合成硫化鋅摻雜錳之螢光粉，VLS法研製硫化鋅奈米線，並對其材料特性以及光學特性，作一完整而詳細的分析與研究。
合成硫化鋅摻雜錳之螢光粉，藉由不同之燒結溫度，使用XRD及Raman之量測，討探硫化鋅結構與晶格空位、缺陷，以及空位與缺陷對於光學特性上之影響。藉著改變不同的錳摻雜濃度，量測其光激發光譜，可發現摻雜3 mol%錳所發出之亮度最大。
硫化鋅奈米線之研製是採用VLS法，藉由改變不同溫度、成長時間、鍍金厚度、爐管壓力等，探討對奈米線特性的影響。當基板上先鍍金，並用濺鍍方式鍍上硫化鋅薄膜，再以VLS法成長奈米線，可出現具六角結構且規則性排列的硫化鋅奈米線。基板上鍍金後，滴上含醋酸錳之酒精溶液，再以VLS法成長奈米線，可成功摻雜二價錳離子，用以提高其在發光元件上之應用價值。

Zinc sulfide ( ZnS ), as a II-VI semiconductor with a band gap energy of 3.66 eV , has received much attention due to its excellent properties, such as large band-gap energy, direct recombination and resistance to high electric field. Zinc sulfide is a direct band gap material and has great potential to be optoelectronic material, for instance solar cells and infrared windows. Zinc sulfide is also a well-known phosphor material with various luminescence properties, such as photoluminescence (PL) and electroluminescence (EL) thus it has generally been utilized in the fields of laser, sensors and displays.

In our study, conventional solid-state method and vapor-liquid-solid method were introduced to synthesize ZnS phosphors and ZnS nanowires, respectively. The material characteristics and optical properties were analyzed by XRD, SEM, TEM, PL spectra and RAMAN spectra. By means of XRD, RAMAN spectra and different sintering temperatures, we investigated the influence on ZnS phosphors’ optical properties resulted from crystal structure, lattice vacancies and lattice defects. From PL spectra, the maximum emission intensity was found out as dopant concentration was 3 mol%.

ZnS nanowires were synthesized by VLS method. By means of different reacting temperatures, reacting time, gold thickness and furnace pressure, the influence on ZnS nanowires’ physical and chemical properties were investigated. As reacting on ZnS thin film, the hexagonal shape and well-organized wires were obtained. When reacting with Mn( CH3COO )2, the ZnS : Mn nanowires were synthesized. By doping Mn2+, the applications of ZnS nanowires on light-emitting devices were more extensive.

目錄
中文摘要..................................................Ⅰ
英文摘要..................................................Ⅲ
目錄......................................................Ⅴ
表目錄....................................................Ⅸ
圖目錄....................................................Ⅹ

第一章 導論................................................1
 1-1 前言..................................................1
 1-2 研究動機..............................................2
 1-2-1 硫化鋅螢光粉........................................2
 1-2-2 硫化鋅螢光粉........................................3
第二章 理論................................................4
 2-1硫化鋅介紹.............................................4
 2-1-1 發現歷史............................................4
 2-1-2硫化鋅之結構.........................................4
   2-1-3 硫化鋅的性質與應用................................6
   2-1-4 硫化鋅之應用......................................7
 2-2 螢光體發光原理........................................7
   2-2-1 發光方式與螢光體簡介..............................7
   2-2-2 發光原理.........................................12
     2-2-2-1 螢光體能量之激發與吸收.......................12
     2-2-2-2 螢光放射和非輻射轉移.........................15
 2-3 奈米材料與其特性.....................................17
   2-3-1 奈米材料的定義...................................17
   2-3-2 奈米材料結構.....................................18
   2-3-3 一維奈米材料.....................................18
   2-3-4 奈米材料的特性...................................19
     2-3-4-1 小尺寸效應...................................19
     2-3-4-2 表面效應.....................................21
     2-3-4-3 量子尺寸效應.................................23
 2-4 奈米線之成長.........................................25
第三章 實驗步驟及研究方法.................................27
 3-1 實驗藥品.............................................27
 3-2 固態燒結法製備硫化鋅摻雜錳之螢光粉末.................27
 3-3 VLS法製備硫化鋅奈米線................................28
   3-3-1 實驗流程.........................................28
   3-3-2 基板清洗.........................................31
   3-3-3 鍍金基板之製備...................................31
 3-4 試片分析.............................................32
   3-4-1顯微分析..........................................32
   3-4-2 結構分析.........................................36
   3-4-3 成份分析.........................................38
   3-4-4 光學分析.........................................39
     3-4-4-1 PL分析.......................................39
     3-4-4-2 色度座標.....................................39
   3-4-5 其他分析(Raman光譜)..............................42
第四章 螢光粉實驗結果與討論...............................43
 4-1 硫化鋅螢光粉.........................................43
   4-1-1 XRD分析..........................................43
   4-1-2 Raman分析........................................44
   4-1-3 SEM分析..........................................45
   4-1-4 PL分析...........................................45
 4-2 硫化鋅摻雜錳螢光粉...................................47
第五章 奈米線實驗結果與討論...............................51
 5-1 影響奈米線成長因素...................................51
   5-1-1 成長溫度.........................................51
   5-1-2 成長時間.........................................54
   5-1-3 鍍金厚度.........................................59
   5-1-4 爐管壓力.........................................61
   5-1-5 基板濺鍍硫化鋅薄膜對奈米線成長之影響.............63
   5-1-6 基板所在位置之溫度對奈米線成長之影響.............65
 5-2 奈米線排列探討.......................................69
 5-3 硫化鋅奈米線特性分析.................................70 
   5-3-1 TEM分析..........................................70
   5-3-2 XRD分析..........................................71
   5-3-3 PL分析...........................................72
   5-3-4 Raman分析........................................75
   5-3-5 EDS分析..........................................77
 5-4奈米線之摻雜..........................................78
第六章 結論...............................................81
 6-1 硫化鋅螢光粉.........................................80
 6-2 硫化鋅奈米線.........................................80
參考文獻..................................................82
                                    

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校內：2006-07-12公開
校外：2007-07-12公開

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