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研究生： 陳彥勳
Chen, Yan-Xun
論文名稱： CaSnO3共添加Ce3+/Mn4+/Dy3+之製備與光致發光及形成單相暖白光之研究
The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO3:Ce3+/Mn4+/Dy3+ phosphors
指導教授： 黃正亮
Huang, Cheng-Liang
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2019
畢業學年度： 107
語文別： 中文
論文頁數： 82
中文關鍵詞： CaSnO3: Ce3+/Mn4+/Dy3+ 、螢光粉 、單相暖白光 、能量轉換
外文關鍵詞： CaSnO3: Ce3+/Mn4+/Dy3+, single-phase, warm white-light-emitting, photoluminescence, co-doped
相關次數： 點閱：93  下載：6 
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    • 本篇論文以固態反應法製備CaSnO3作為主體材料，使用Ce3+、Mn4+以及Dy3+作為活化劑離子，使材料能激發出單相的暖白光，並探討其發光性質等特性。
    在激發光為266nm下，在共摻雜0.3%Mn4+於CaSnO3:0.5%Ce3+後，CIE座標從藍色座標(0.1755, 0.1755)調變為暖白色座標(0.3997, 0.4060)，相對色溫(CCT)為3758 K。
    在激發光為325nm下，在共摻雜0.3%Dy3+於CaSnO3:0.5%Ce3+, 0.2%Mn4+後，CIE座標從藍紫色座標(0.2937, 0.1762)調變為暖白色座標(0.3702, 0.3347)，相對色溫(CCT)為3998 K。
    而最後根據文獻公式與方法，推算出Ce3+→Mn4+能量轉移的臨界距離（Rc）約為4.5 Å，以及Ce3 +→Mn4+的能量轉移是通過交換相互作用機制所產生。

    In this work, CaSnO3:Ce3+/Mn4+/Dy3+ phosphors were synthesized by conventional solid state reaction method. The best concentration of Ce3+ in CaSnO3 host that was excited in 266nm was determined to 0.5%. We successfully turned the CIE of CaSnO3:0.5%Ce3+ from (0.1755, 0.1755) to (0.3997, 0.4060) by using 266 nm laser doping 0.3%Mn4+, and its correlated color temperature (CCT) is 3758 K. In addition, we turned the CIE of CaSnO3:0.5%Ce3+, 0.2%Mn4+ from (0.2937, 0.1762) to (0.3702, 0.3347) by using 325 nm laser doping 0.3%Dy3+, and the CCT is 3998 K. The spectral overlap between the emission band of Ce3+ and the excitation band of Mn4+ supports the occurrence of the energy transfer from Ce3+ to Mn4+. And we speculate that the energy transfer from Ce3+ to Mn4+ was exchange interactions on the basis of Dexter's energy transfer formula.

    摘要 I 致謝 XI 目錄 XII 表目錄 XVI 圖目錄 XVII 第一章 緒論 1 1-1 前言 1 1-2 研究動機與目的 2 1-3 主體材料結構 3 第二章 理論基礎與文獻回顧 5 2-1 螢光材料介紹 5 2-2 螢光材料發光分類 6 2-2-1 激發源分類 6 2-2-2 螢光材料發光特性分類 8 2-3 發光機制 10 2-3-1 輻射複合發光 11 2-3-2 螢光與磷光 13 2-3-3 螢光體能量的激發與吸收 14 2-3-4 史托克位移(Stokes Shift) 15 2-4 影響發光特性因素 17 2-4-1 主體共價效應(Convalency Effecft) 17 2-4-2 晶格場(crystal field)效應 17 2-4-3 濃度淬滅(Concentration Quenching)效應 17 2-4-4 熱淬滅(Thermal Quenching)效應 18 2-4-5 毒劑現象(Poisoning) 19 2-5 能量轉移(Energy Transfer) 20 2-6 色彩簡介 23 2-6-1 色溫與相對色溫(Correlated Color Temperature, CCT) 23 2-6-2 演色性指標(Color Rendering Index, CRI) 25 2-6-3 色度座標圖(CIE Chromaticity Diagram) 26 2-7 固態反應法 27 第三章 實驗步驟與方法 29 3-1 實驗材料 29 3-2 實驗流程 30 3-2-1 粉末的製備與球磨 31 3-2-2 粉末的煆燒 31 3-3 分析儀器與方法 32 3-3-1 X光繞射分析 32 3-3-2 螢光光譜特性與拉曼光譜(Raman Spectra)分析 33 3-3-3 生命週期螢光光譜分析 34 3-3-4 掃描式電子顯微鏡(SEM)分析 35 3-3-5 EDS元素分析(EDS) 35 3-3-6 量子效率分析(Quantum efficiency, QE) 36 第四章 實驗結果與討論 37 4-1 CaSnO3摻雜Ce3+、Mn4+、Dy3+之結構探討 37 4-1-1 XRD分析 37 4-1-2 SEM分析 38 4-1-3 EDS分析 39 4-1-4 Raman分析 40 4-2 以激發光源為266 nm下CaSnO3: Ce3+之特性探討 43 4-2-1 PLE分析 43 4-2-2 PL分析 44 4-2-3 C.I.E.色度座標圖 48 4-3 激發光源為266 nm下CaSnO3: Ce3+/Mn4+之特性探討 50 4-3-1 PL分析 50 4-3-2 C.I.E.色度座標圖 51 4-4 Ce3+與Mn4+的能量轉移與發光衰減分析 54 4-4-1 光譜重疊分析 54 4-4-2 PL強度分析 55 4-4-3 發光衰減分析 56 4-4-4 能量轉移臨界距離 58 4-4-5 能量轉移交互機制 59 4-5 激發光源為325 nm下CaSnO3: Ce3+/Mn4+之特性探討 62 4-5-1 PL分析 62 4-5-2 C.I.E.色度座標圖 63 4-6 激發光源為325 nm下CaSnO3: Ce3+/Mn4+/Dy3+之特性探討 65 4-6-1 PL分析 65 4-6-2 C.I.E.色度座標圖 66 第五章 結論 69 5-1 CaSnO3:Ce3+/Mn4+/ Dy3+之結構分析 69 5-1-1 CaSnO3:Ce3+/Mn4+/ Dy3+的XRD相組成分析 69 5-1-2 CaSnO3:Ce3+/Mn4+/Dy3+之拉曼光譜分析 70 5-1-3 CaSnO3:Ce3+/Mn4+/Dy3+之SEM、EDS分析 71 5-2 激發光源為266 nm下CaSnO3: Ce3+/Mn4+之特性分析 73 5-3 激發光源為325 nm下CaSnO3: Ce3+/Mn4+/Dy3+之特性分析 75 5-4 CaSnO3:Ce3+, Mn4+的能量轉移與發光衰減分析 76 第六章 未來展望 78 參考文獻 79

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