螢光粉參數對於白光LED封裝效率之研究

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姓名

鄭又瑄(Yow-shiuan jeng) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

螢光粉參數對於白光LED封裝效率之研究
(The studies of power efficiency with different phosphor parameters in white LEDs)

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摘要(中)

本篇論文我們針對矽酸鹽螢光粉濃度與厚度對於白光LED封裝效率的影響進行研究與分析。首先利用已建構之矽酸鹽螢光粉模型，以藍光雷射激發各種不同濃度與厚度的螢光粉薄片，分析其正向、側向及背向的能量，並以實驗驗證模擬結果，作為後續白光LED封裝效率比較的分析基礎。接著將激發光源改為藍光LED，在螢光粉遠離晶片的實驗架構下，比較不同濃度與厚度螢光粉對封裝效率的影響；此外也利用模擬改變封裝腔體的反射率，進一步分析螢光粉濃度、厚度與白光LED封裝效率之間的對應關係。

摘要(英)

In this thesis, we studied on the power efficiency with different phosphor concentrations and thicknesses in white LEDs. Based on our silicate phosphor model, we used a blue light laser to excite phosphor plates with different concentrations and thicknesses and analysis the forward power, sideward power and backward power of each phosphor plate in the first time. We also did the experiment to verify our simulation and then used the measurement results to analysis the power efficiency in white LEDs later. Secondly, we changed the light source from a blue light laser to a blue LED and researched the power efficiency with different phosphor concentrations and thicknesses under the remote phosphor configuration. Besides, we also changed the surface reflectance in the simulation in order to figure out the reciprocal effects among phosphor concentration, phosphor thickness and power efficiency in white LEDs.

關鍵字(中)

★ 白光LED
★ 矽酸鹽螢光粉
★ 封裝效率

關鍵字(英)

★ silicate phosphor
★ power efficiency
★ white LED

論文目次

摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VI
表目錄 XI
第一章緒論 1
1.1 發光二極體之背景 1
1.2 研究動機 4
1.3 論文大綱 9
第二章基本理論 10
2.1 引言 10
2.2 0LED發光原理 10
2.3 螢光粉發光原理 11
2.4 混光原理 13
2.5 白光LED之封裝效率 14
第三章螢光粉薄片正向、側向及背向能量分析 16
3.1 引言 16
3.2 螢光粉粒子數之計算 16
3.3 螢光粉模型之介紹 20
3.4 實驗結果與模擬分析之比較 26
第四章不同濃度與厚度螢光粉之封裝效率比較 46
4.1 引言 46
4.2 實驗結果之比較分析 46
4.3不同封裝腔體反射率出光效率之比較 52
第五章結論 59
參考文獻 61
中英文名詞對照表 65

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指導教授

孫慶成(Ching-cherng Sun)

審核日期

2011-7-25

推文