本論文是研發玻璃轉移溫度(Tg=583℃)較高的低溫玻璃組成，來取代目前商業用矽膠(Tg=150℃)作為色轉換層的基材，並利用Ce:YAG螢光粉依照固定比例調和後燒結製成玻璃螢光體應用在白光LED模組。
首先對於玻璃螢光體中螢光粉分佈情形以分布均勻度(Distribution Uniformity，Du)進行量化。實驗使用不同粉徑大小的玻璃粉製做螢光體後，利用影像處理及運算軟體得到Du分別為64.46%、84.65%、85.24%以及91.85%的玻璃螢光體，且量子效率依序為18.49%、28.31%、29.73%以及28.56%。對於玻璃螢光體的均勻性品質量化，並可獲得高均勻性Du為85.24%以及量子效率達29.73%的最佳玻璃粉徑。
再者使用氧化鋁管燒結玻璃螢光體做為新的製程，有效提升樣品穩定度與製程效率，並節省70%的材料應用搭配新650℃的低溫玻璃製做出新一代低溫玻璃螢光體(LTCeYDG)。與先前高溫750℃玻璃螢光體(CeYDG)相比，其平均量子效率部分從22.3%提升至29.73%超過7個百分點，而在發光效率部分也從原本的36.4 lm/W提升至40.68 lm/W。提升量子與發光效率的原因為製程溫度降低100℃，減少矽離子(Si4+)擴散取代鋁離子(Al3+)的發生，使YAG保有較完整的主體晶格，進而有效提升玻璃螢光體的效能。最後以高解析度穿透式電子顯微鏡(HRTEM)與X光繞射儀(XRD)，對於兩者不同的玻璃螢光體LTCeYDG與CeYDG進行分析，並證實熱應力較高的製程溫度會破壞YAG主體晶格，以至於放光能力衰退。
本研發結果對於穩定玻璃螢光體的製程參數有助益：(1)使用玻璃粉徑於30∼100μm玻璃粉可使均勻度最佳化。(2)降低製程溫度650℃低溫製程，製做出與CeYDG相比量子效率提升7個百分點，且發光效率提升4.2lm/W的螢光體。

Using low-temperature (650℃) Ce3+:YAG doped glass (LTCeYDG) phosphor layer instead of conventional Ce:YAG doped silicone phosphor layer applied to high-power phosphor-converted white-light-emitting diodes (PC-WLEDs) is demonstrated.The glass transition temperature (Tg) of silicone is 150℃ but glass is 750℃,it shows the glass were employed in high power LED than silicon.
The uniformity of phosphor powder doped glass is an important item to discriminates between good and bad. Quantize the uniformity of glass phosphor by image processing software and Distribution Uniformity (Du). Calculate the uniformity of phosphor powder mix with glass powder which has different particle size and measurement optical properties of glass phosphor which has different uniformity. The Du of glass phosphor are 64.46%, 84.65%, 85.24% , 91.85% and the quantum efficiency are 18.49%, 28.31%, 29.73%, 28.56% ,respectively.
By using Ceramic tube and low temperature glass powder sintering glass phosphor is a new fabrication. Compare with last fabrication, new fabrication reduce 100℃fabrication temperature from 750℃ to 650℃, 70% material savings and high luminous efficiency. The quantum efficiency and lumen per watt were improved about 7 percentage point from 22.3% to 29.1% and 4.2 lm/W from 36.4 lm/W to 40.68 lm/W. We used the XRD to analyze the glass phosphor of last fabrication and new fabrication and the results show that the higher thermal stress destroys the structure of YAG, lower fabrication temperature used to get higher luminous efficiency.

中文摘要 i
Abstract ii
目錄 iii
圖次 v
表次 vii
第一章 緒論 1
第一節 前言 1
第二節 研究背景與動機 1
第三節 研究目標與章節介紹 5
第二章 LED構造及基本原理 8
第一節 LED晶片發光原理 9
第二節 螢光粉發光原理 11
第三節 LED構造介紹及發展 15
第四節 色彩學 17
第五節 白光發光原理 28
第三章 均勻度分析 32
第一節 分佈均勻度 32
第二節 實驗架構與方法 34
第三節 影像處理及運算 36
第四節 測量結果與光學特性 38
第四章 低溫玻璃螢光體製程 41
第一節 玻璃螢光體燒結技術與改良 41
第二節 量測儀器與原理 51
第一項 紫外光-可見光光譜儀 51
第二項 螢光光譜儀 52
第三項 積分球 55
第三節 實驗與量測系統 57
第四節 玻璃螢光體量測結果與討論 59
第一項 光學量測之結果與討論 59
第二項 微觀變化與討論 65
第五章 結論 71

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