本研究分為兩個部份，第一部分為利用固態法合成可用紫外光波長(394 nm)及藍光波長(465 nm)激發的鉬酸鹽類紅色螢光粉體，探討不同鈣、鋰、鈉及銪比例的鉬酸鹽類螢光粉之發光特性。
　　鉬酸鈣鋰銪(Ca1-2xLixEuxMoO4，0≦x≦0.5)螢光粉體在銪(Eu)添加量為30%(x＝0.3)時，有最佳之紅光發光強度(616 nm)，C.I.E座標為(0.64, 0.34)。
　　考量銪的價格成本，我們以鉬酸鋰銪(LiEu(MoO4)2)及鉬酸鈉銪(NaEu(MoO4)2)為主體，添加鉬酸鋰(Li2MoO4)及鉬酸鈉(Na2MoO4)，提出LiEu(MoO4)2‧X Li2MoO4 (X＝0、1、2、3、4)結構以及NaEu(MoO4)2‧X Na2MoO4 (X＝1、2、3、4)結構，藉由X值的增加，降低銪佔鉬酸主體整體的比例，以減少成本支出，又不至於降低太多的發光強度。我們發現在LiEu(MoO4)2‧X Li2MoO4結構中，當X＝2的時候有最佳的發光強度(616 nm)，C.I.E座標為(0.64, 0.34)；而在NaEu(MoO4)2‧X Na2MoO4結構中，同樣也是X＝2的時候有最佳的發光強度(617 nm)，C.I.E座標為(0.62, 0.35)；隨著X值的增加，紅光發光強度也隨之減弱。之後在LiEu(MoO4)2‧X Li2MoO4結構中又分別添加了釤(Sm)和鑭(La)作為增感劑，以增加紅光發光強度(LiEu1-ySmy(MoO4)2‧X Li2MoO4及LiEu1-yLay(MoO4)2‧X Li2MoO4)。在釤的添加量為2mol%時有最佳之紅光發光強度(616 nm)，C.I.E座標為(0.63, 0.33)；而在鑭的添加量為4mol%時有最佳之紅光發光強度(616 nm)，C.I.E座標為(0.63, 0.33)。
　　在第二部分，我們利用有機金屬鹽法來合成奈米級的鈮酸鍶鋇(SrxBa1-xNb2O6，SBN)粉末。更進一步地摻雜鉺離子(Er3+)形成綠光螢光粉末，其主要之綠光發射峰值為538 nm及545 nm。探討不同鉺摻雜量的螢光粉末之發光特性，發覺在鉺離子添加量為5mol%時有最佳之綠光發光強度。

This research is composed of two parts. First, europium doped molybdate-based red phosphor was synthesized by solid-state reaction. We investigated the effct of doping concentraction on the characterization of luminescence which can be excited by the wavelength of 394 nm and 465nm.
The experiments show that the maximum emission intensity is obtained by adding 30mol% (x＝0.3) europium ions in Ca1-2xLixEuxMoO4 (0≦x≦0.5) phosphor, which has a red light emission at 616 nm, and the C.I.E coordinate is (0.64, 0.34).
We bring up LiEu(MoO4)2‧X Li2MoO4 (X＝0, 1, 2, 3, and 4) and NaEu(MoO4)2‧X Na2MoO4 (X＝1, 2, 3, and 4) compositions, with the increase of X to reduce europium ratio accounted for molybdate-based phosphor. We find out that LiEu(MoO4)2‧X Li2MoO4 (X＝0, 1, 2, 3, and 4) composition has the best luminescence intensity at 616 nm when X＝2, the C.I.E coordinate is (0.64, 0.34). NaEu(MoO4)2‧X Na2MoO4 (X＝1, 2, 3, and 4) composition has the best luminescence intensity at 617 nm when X＝2, and the C.I.E coordinate is (0.62, 0.35). The more increased of X value, the more weakened of luminescence intensity. Afterward we separately add the samarium (Sm) or lanthanum (La) in LiEu(MoO4)2‧X Li2MoO4 (X＝1) composition to enhance the luminescence intensity at 616 nm. the maximum emission intensity is obtained by adding 2mol% samarium ion in LiEu1-ySmy(MoO4)2‧X Li2MoO4, and the C.I.E coordinate is (0.63, 0.33). Similarly, the maximum emission intensity is obtained by adding 4mol% lanthanum ion in LiEu1-yLay(MoO4)2‧X Li2MoO4, and the C.I.E coordinate is (0.63, 0.33).
Second, we synthesize nanocrystalline powders of strontium barium niobate (SrxBa1-xNb2O6, SBN) by chemical methods. Then we dope erbium ion (Er3+) in SBN to synthesize SBN:Er3+ phosphors which emits green light at 538 nm and 545 nm. We investigated the effct of doping concentraction in SBN with different dopant amount. The experiments show that the maximum emission intensity is obtained by adding 5% Er ions in SBN.

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