臺灣博碩士論文加值系統

在未來10年內，LED將成為替代傳統照明器具之重大技術。由於白光LED之照明元件要求高效率及高安定性，因此白光LED用之無機螢光材料逐漸往氮化物方面發展。本發明係有關於一種氮化物螢光粉體之合成方法，氮化物螢光粉除了具有無毒性、強度高、熱穩定性、化學穩定性等優異性能，再加上高發光強度及波長範圍可調變至紅光，在白光ＬＥＤ的應用上具有極大的發展潛力。然而目前氮化物螢光粉之合成需在嚴苛的條件（如高溫、高壓、長時間）下進行，以致氮化物系列螢光粉之應用進展受限，是故目前急需發展作為白光LED用之氮化物螢光材料的合成方法。本發明方法能在省時、省能源、製程簡單且生產成本低等條件下，合成螢光性質優越且具有高應用價值之螢光粉體。

White LED lighting thus is expected to replace the traditional lighting devices and to become the major lighting technology in the coming next decade. Because the key factors of the white LED are high efficiency and high stability, we need to develop materials toward nitride phosphors. This invention relates to a method for synthesis of nitride phosphors. Nitride phosphors have attracted much attention due to their excellent quality, high thermal and chemical stability and nontoxicity. The most significant properties are their strong emission intensity and variable emission wavelength ranges to the red light. The nitride phosphor materials will have been used widely. However, at the present nitride phosphors can only be synthesized under relatively severe conditions such as high temperature, high pressure and long reaction time. To overcome these problems, our technique can synthesis by low energy consumption, fast production, simple processing and low cost to get high optic quality and high added value of products.

中文摘要．．．．．．．．．．．．．．．．．．．．．．．．Ⅰ
英文摘要．．．．．．．．．．．．．．．．．．．．．．．．Ⅱ
目錄．．．．．．．．．．．．．．．．．．．．．．．．．．Ⅲ
表目錄．．．．．．．．．．．．．．．．．．．．．．．．．Ⅵ
圖目錄．．．．．．．．．．．．．．．．．．．．．．．． VII

第一章 緒論．．．．．．．．．．．．．．．．．．．．． 1
1-1 前言．．．．．．．．．．．．．．．．．．．．．． 1
1-2 白光發光二極體簡介．．．．．．．．．．．．．．． 2
1-3 白光發光二極體之發展．．．．．．．．．．．．．． 4
第二章 理論基礎與文獻回顧．．．．．．．．．．．．．． 8
2-1 螢光材料的簡介與分類．．．．．．．．．．．．．． 8
2-2 發光原理．．．．．．．．．．．．．．．．．．．． 9
2-3 影響史托克位移的因素．．．．．．．．．．．．．．11
2-4 螢光材料的設計．．．．．．．．．．．．．．．．．13
2-5 影響螢光效率的因素．．．．．．．．．．．．．．．14
第三章 研究動機與想法．．．．．．．．．．．．．．．．18
3-1 氮化物作為主體晶格．．．．．．．．．．．．．．．18
3-2 銪離子、錳離子作為活化劑．．．．．．．．．．．．18
3-3 合成方法．．．．．．．．．．．．．．．．．．．．19
3-3-1 合成氮化物螢光材料．．．．．．．．．．．．． 19
3-3-2 燃燒合成法簡介．．．．．．．．．．．．．．． 22
3-4 研究發展方向．．．．．．．．．．．．．．．．．．23
第四章 實驗裝置與藥品．．．．．．．．．．．．．．．．24
4-1 實驗裝置．．．．．．．．．．．．．．．．．．．．24
4-2 實驗藥品．．．．．．．．．．．．．．．．．．．．27
第五章 合成方法之開發．．．．．．．．．．．．．．．．28
5-1 反應錠製備．．．．．．．．．．．．．．．．．．．28
5-2 燃燒反應的進行．．．．．．．．．．．．．．．．．29
5-3 產物處理與分析．．．．．．．．．．．．．．．．．30
第六章 實驗結果與討論．．．．．．．．．．．．．．．．31
6-1 氮化物的燃燒合成技術探討．．．．．．．．．．．．31
6-1-1 氮化矽合成方法．． ．．．．．．．．．．．．．31
6-1-2 氮化鋁合成方法．．．．．．．．．．．．．．． 32
6-2 改變各項組成變因．．．．．．．．．．．．．．．．33
6-2-1氧化矽系列以矽鋁氮莫爾比例分類．．．．．．．．33
6-2-2氮化鋁系列以活化劑種類分類．．．．．．．．．．34
6-2-3 活化劑的比例．．．．．．．．．．．．．．．． 35
6-3 外觀特徵．．．．．．．．．．．．．．．．．．．．40
6-4 光學性質．．．．．．．．．．．．．．．．．．．．40
6-5 反應溫度的影響．．．．．．．．．．．．．．．．．47
6-5-1 加熱方式．．．．．．．．．．．．．．．．．． 48
6-5-2 引燃劑種類．．．．．．．．．．．．．．．．． 52
6-5-3 反應碇大小．．．．． ．．．．．．．．．．．．55
6-6 氧化物的影響．．．．．．．．．．．．．．．．．．55
6-7 鋁與矽之間的關係．．．．．．．．．．．．．．．．58
第七章 結論．．．．．．．．．．．．．．．．．．．．．60
參考文獻．．．．．．．．．．．．．．．．．．．．．．． 61

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