| 研究生: |
陳嘉民 Chen, Chia-Ming |
|---|---|
| 論文名稱: |
微波輔助溶液燃燒合成法製備螢光粉體 Preparation of phosphor powders using microwave assisted solution combustion synthesis method |
| 指導教授: |
鍾賢龍
none |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 化學工程學系 Department of Chemical Engineering |
| 論文出版年: | 2006 |
| 畢業學年度: | 94 |
| 語文別: | 中文 |
| 論文頁數: | 140 |
| 中文關鍵詞: | 釔鋁石榴石 、氧化釔 、矽酸鋅 |
| 外文關鍵詞: | YAG, Phosphor, BAM |
| 相關次數: | 點閱:90 下載:2 |
| 分享至: |
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微波加熱技術是種高效率的加熱方法,兼具有加熱迅速,達到高溫,且加熱均勻等優點,近來被廣泛應用。
本文以微波補助引燃溶液燃燒合成法合成Zn2SiO4:Mn,Y3Al5O12:Ce (YAG),Y2O3:Eu, BaMgAl10O17:Eu (BAM)四種不同發光顏色的螢光粉,並分別就活化劑離子濃度,煅燒溫度,原料來源,燃料,煅燒氣氛,引燃方式加以探討,期望找出最佳條件,以合成出高效率之螢光粉。
由實驗結果得知Zn2SiO4:Mn-最佳煅燒環境為氮氣氣氛1200℃,最佳摻雜濃度為3%;Y3Al5O12:Ce為1600℃,3.5%摻雜濃度;Y2O3:Eu為1200℃,15%摻雜濃度,BaMgAl10O17:Eu 則需要煅燒溫度超過1400℃才能形成BAM晶相,而最佳溫度為1650℃還原氣氛(95%N2+5%H2),6%的摻雜濃度。
Microwave heating technique is a high efficient heating way, and there are many advantages such as capable of achieving high temperature, rapid, and uniform heating, therefore, it has been used widely recently.
In this thesis, the microwave-assisted the solution combustion method was used to prepare Zn2SiO4:Mn, Y2O3:Eu, Y3Al5O11:Ce, BaMgAl10O17:Eu phosphors which can emit different colors, respectively. The experimental parameters such as active ion concentration, firing temperature, the origin of reactant, fuel, firing atmosphere, the type of firing, will be discussed to find the essential factor and to research better phosphor and high efficient phosphors could be obtained.
For Zn2SiO4:Mn, the results show that the highest luminescent intensity could be achieved after calcining at 1200℃(under nitrogen atmosphere) with 3 mol% Mn doped. For YAG, the highest luminescent intensity was at 1600℃ with 3.5% Ce doped. For Y2O3, the highest luminescent intensity was at 1200℃ with 15% Eu doped. As shown in XRD patterns, a high purity of BAM structure could be obtained when calcined at 1400℃and the crystalline increases with increasing temperature and reaches its maximum at 1650℃ under reducing atmosphere (5% H2 + 95% N2) with 6% Eu doped.
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