白光LED 製造過程中，最重要的部份除了LED 發光晶片、封裝技術…等之外，接著也就是螢光粉粉末的開發被討論最多，而螢光粉粉末也是各廠商申請最多智慧財產權維護利益的技術要點。而要如何突破這些被智慧財產權保護的專利技術，就是去了解螢光粉的組成、特性以及製造方式，並嘗試以各種不同方式來研究應該如何改善目前已知的螢光粉，更近一步創出新穎的螢光粉粉末。

我們的實驗即是將YAG:Ce3+摻雜別種化合物(例如：銅、鋁、…)於小型試管中，並且在試管內部接近真空的狀態之下做開口端的密合，接著讓小型試管做升溫加熱，希望藉由摻雜元素在高溫下的影響促成YAG:Ce3+調整發光波段，而在實驗中也發現隨著試管加熱溫度的提升導致發光強度有逐漸下降的傾向。由於YAG:Ce3+黃色螢光粉面臨其表面擁有缺陷的缺點，所以我們研究讓YAG:Ce3+螢光粉於表面吸附抗反射薄膜來加以改善並且修飾YAG:Ce3+表面擁有的缺陷，觀測結果顯示經過修飾表面缺陷的YAG:Ce3+在發光強度上有提升的現象。我們也將抗反射薄膜吸附於YAG:Ce3+表面的化合物應用於螢光膠之上，並且與原始YAG:Ce3+所製做而成的螢光膠做比較，在螢光膠的比較上發現YAG:Ce3+表面吸附抗反射薄膜後的發光效率以及對於藍光光源的吸收率都有較佳的表現。

With today's technology, a variety of styles and a variety of different LED material was produced. The development of LED in the same time, the vendor industry in order to defend their own interests and under the huge business opportunities, and each side of the application of the style-related intellectual property rights in the LED,although the wise limits of property rights, but also contributed to a more diverse The LED manufacturing methods have been developed.

Our experiment is the YAG:Ce3+ doped other compounds (for example: copper,aluminum, ...) in a small test tube and in within the near vacuum of a state to do the open end of the seal, and then make a small test tube temperature heating, hopes the doping elements in the impact of high temperatures contributed to YAG:Ce3+ to adjust the lasing wavelength, and in vitro experiments also found with the increase of heating temperature photoluminescence intensity for a gradual downward trend. The YAG:Ce3+ yellow phosphor surface facing the shortcomings of a defect, so we research for YAG:Ce3+ phosphors adsorbed on the surface of anti-reflective film to be improved and modified YAG:Ce3+ has a surface defect observation showed that after modification surface defects of the YAG:Ce3+ emission intensity on increase in the phenomenon. We will also anti-reflective film adsorbed on the YAG:Ce3+ compounds used in fluorescent plastic surface on top, and with the original YAG:Ce3+ phosphors are made of rubber making to compare, comparison of the fluorescent plastic found on YAG:Ce3+ surface adsorption anti-reflective film for luminescence efficiency and the absorption rate for the blue light has a better performance.

論文審定書………………………………………………i
致 謝……………………………………………………iii
中文摘要………………………………………………iv
英文摘要………………………………………………v
內容目錄………………………………………………vi
圖次……………………………………………………ix
表次……………………………………………………xi
第一章 緒論…………………………………………1
1.1 前言……………………………………………1
1.2 研究動機………………………………………1
第二章 理論基礎與文獻回顧………………………3
2.1 LED 白光發光原理……………………………3
2.1.1 LED 白光發光原理與敘述…………………3
2.1.2 LED 白光發光方式…………………………4
2.1.3 LED 白光發光的論述………………………6
2.2 螢光粉的分析…………………………………6
2.2.1 螢光粉的組成………………………………6
2.2.2 螢光粉的發光原理…………………………10
2.3 YAG 螢光粉體的簡介…………………………11
2.3.1 文獻資料……………………………………11
2.3.2 YAG的結構分析………………………………12
第三章 實驗方法及步驟……………………………14
3.1 實驗目的………………………………………14
3.2 YAG:Ce3+螢光體摻雜其他化合物發光特性之量測實驗…………15
3.2.1 實驗材料……………………………………15
3.2.2 實驗材料的樣本配置………………………17
3.2.3 螢光粉摻雜其他元素粉末的量測實驗……19
3.2.3.1 PL 分光光譜儀分析……………………20
3.2.3.2 XRD分析……………………………………22
3.3 YAG:Ce3+螢光體吸附化合物發光特性之量測實驗………23
3.3.1 實驗材料……………………………………24
3.3.2 Sol-Gel 法吸附化合物於螢光粉表面的量測實驗……………24
3.3.2.1 SEM-EDS 分析……………………………26
3.3.2.2 PL 分光光譜儀分析……………………26
3.3.2.3 XRD晶相分析……………………………26
3.4 YAG:Ce3+螢光體吸附化合物於螢光膠體上的應用實驗………26
3.4.1 實驗材料…………………………………27
3.4.2 YAG:Ce3+螢光體吸附化合物於螢光膠體上的實驗…………27
3.4.2.1 PL 分光光譜儀分析…………………29
3.4.2.2 Integrating Sphere 儀器分析……29
3.4.2.3 UV-VIS 儀器分析……………………29
第四章 結果與討論……………………………30
4.1 YAG:Ce3+螢光體摻雜其他化合物發光特性之研究……30
4.1.1 PL 光致發光分析………………………30
4.1.1.1 混合物於玻璃管中的測驗結果………30
4.1.1.2 混合物於玻璃試片中的測驗結果………41
4.1.1.3 综合討論實驗結果………………………43
4.1.2 XRD 晶相分析………………………………44
4.2 YAG:Ce3+螢光體吸附化合物發光特性之研究………46
4.2.1 SEM-EDS 元素成份分析……………………46
4.2.2 PL 光致發光分析…………………………48
4.2.3 XRD 晶相分析………………………………50
4.3 YAG:Ce3+螢光體吸附化合物於螢光膠體上的應用………52
4.3.1 PL 光致發光分析……………………………53
4.3.2 Integrating Sphere 分析…………………56
4.3.3 UV-VIS 分析…………………………………57
4.4 討論Anti-reflective coating 應用於YAG:Ce3+螢光體表面………58
4.4.1 Anti-reflective coating 的應用…………………………58
4.4.2 Anti-reflective coating 的論述…………………………59
4.4.3 YAG:Ce3+螢光體表面的Anti-reflective coating…………………60
第五章 結論………………………………………61
參考文獻…………………………………………63

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