本研究利用固相反應法合成Li3Ba2La3(MoO4)8做為主體晶格，分別摻雜稀土離子Eu3+以及Dy3+作為發光中心。利用X光粉末繞射、掃描式電子顯微鏡、拉曼光譜儀、紫外-可見光吸收光譜儀以及光激發光譜儀進行其結構與發光特性之鑑定，並討論活化劑濃度對於發光特性之影響。
發射紅光的Li3Ba2La3-xEux(MoO4)8螢光粉中，發射峰值來自於內層4f軌域之間的躍遷，由於主體晶格之振動頻率較高，多重聲子放射現象容易產生，因此在此螢光粉中，高於5D0之螢光能階的發光不容易被觀察到。在394nm之紫外光激發下，放射光譜中以593 nm(5D0->7F1)及618 nm (5D0->7F2)之峰值較強，而強度又以5D0->7F2能階躍遷為最強，當x=2.1時其發光強度約為商用螢光粉ZnS:(Mn2+,Te2+)的3.3倍，且經計算其發光位於色度座標圖中之(0.67, 0.33)之位置，此點已達國際標準紅光之基準。
發射近白光的Li3Ba2La3-xDyx(MoO4)8螢光粉中，利用388 nm波長之紫外光激發下，發射光譜主要可分為兩個部分：位於藍光區的4F9/2->6H15/2能階躍遷以及位於黃光區的4F9/2->6H13/2能階躍遷: 在本研究中以4F9/2->6H13/2之躍遷較強。計算經由此兩放射峰所混合出之發光，色度座標為(0.35, 0.40)，可發現其位於白光區之邊緣，帶有些許黃光之位置。

Rare-earth (RE) ion doped phosphors, Li3Ba2La3-xREx(MoO4)8 (RE = Eu3+, Dy3+), were synthesized by a solid-state reaction process at 800C. The structural and photoluminescent properties of the prepared phosphors were investigated by X-ray diffraction, scanning electron microscopy, Raman scatter spectroscopy, UV-visible absorption, and photoluminescence (PL) spectroscopy. The aim of the research was to develop novel phosphors for the UV-LED to white light conversions.
The experimental results showed that the dominant emissions of the Li3Ba2La3-xEux(MoO4)8 phosphors under the UV excitation (394 nm) were at 593 nm and 618 nm, originating from the electronic transitions between the trivalent RE states. Due to the high phonon frequency of the host lattice, the transitions from the emitting levels higher than 5D0 were not observed in the PL spectra. The above two observed emissions were due to the 5D0->7F1 (593 nm) and 5D0->7F2 (618 nm) transitions. In particular, the 5D0->7F2 emission was very strong and for the x=2.1 samples, its peak intensity was about 3.3 times more than the commercial phosphors ZnS:(Mn2+,Te2+). The CIE chromaticity coordinate of the Li3Ba2La0.9Eu2.1(MoO4)8 red emissions was calculated to be at (0.67, 0.33), which is almost the same as the standard red chromaticity of the NTSC system.
In the Li3Ba2La3-xDyx(MoO4)8 (x=0.01-0.24) series, the dominant emissions under the UV excitation (388 nm) were from the 4F9/2->6H15/2 (blue) and 4F9/2->6H13/2 (yellow) transitions, and the intensity of the later was stronger. The mixture of all the emissions had the CIE chromaticity coordinates at (0.35, 0.40), which is at the yellowish-white color region.

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