本研究以高溫固態反應法製備螢光材料，選用雙鈣鈦礦結構Ba2SrWO6作為主體材料，首先摻雜Mn4+離子少量取代主體材料之W6+離子後，探討深紅色螢光粉Ba2SrWO6:Mn4+之晶體結構與發光特性，並同時共摻雜Dy3+離子部分取代主體材料中之Sr2+離子後，製備出單相白光螢光粉Ba2SrWO6:Mn4+/Dy3+，研究其光譜變化及活化劑間能量轉移之情形，且透過調節不同活化劑濃度，改變色溫，最終製備出單相暖白光之螢光材料。
第一部分將研究紅色螢光材料Ba2SrWO6:Mn4+在不同煅燒溫度下，對於其晶體結構及光譜特性之影響。當溫度條件控制於900℃至1200℃時，經由XRD分析觀察出晶相沒有偏移之情況，代表材料有成功地被合成，且經由SEM分析觀察煅燒溫度上升，晶粒尺寸有隨之成長的情形，另外利用PLE分析得知其激發光波段落在250-550nm，因此本實驗利用紫外光雷射激發螢光材料並觀察光譜在煅燒溫度改變後，其光譜波長位置並無改變，但強度會隨之變化，因此藉由此分析確定螢光材料之最佳煅燒溫度位於1000℃。
第二部分研究紅色螢光材料Ba2SrWO6在摻雜不同Mn4+離子濃度後，對於晶體結構及光譜特性之影響。首先透過XRD、SEM與Raman光譜分析發現濃度改變並不會對於晶相、表面形貌與振動模態有太大影響，另外其放射光強度會隨著濃度變化而改變，最佳放射波長與濃度分別落在693 nm與0.6 mol%，而本研究探討活化劑中濃度淬滅機制，發現主要由電多極交互作用中偶極-偶極力所主導，最後利用公式計算出螢光材料之CIE色度座標為(0.7238, 0.2762)，色純度為97.5%，證實成功製備出深紅色螢光材料Ba2SrWO6:Mn4+。
第三部分將紅色螢光材料Ba2SrWO6:Mn4+共摻雜Dy3+離子後，形成白光螢光材料Ba2SrWO6:Mn4+/ Dy3+，以325nm作為激發光源下，最佳Dy3+離子濃度落在1.8mol%，接著同樣利用公式計算出CIE色度座標為(0.4263, 0.3778)，色溫(CCT)為3064K，落在暖白光區域，並利用改變Dy3+離子濃度，達到調節白光色溫之效果。接著探討共摻雜兩活化劑間能量轉移之情況，透過上述分析發現Mn4+離子激發光譜與Dy3+離子放射光譜有重疊之現象，初步預測兩活化劑將產生能量轉移之現象，最終本研究將單摻雜Mn4+離子與共摻雜Mn4+/Dy3+離子之放射光譜作對比，發現共摻雜Dy3+後，放射光強度有上升之現象，因此證實兩者活化劑間發生能量轉移之現象。

A novel deep red-light phosphor of Ba2SrWO6:Mn4+ with double-perovskite structure was synthesized by a high temperature solid state reaction method. In addition, we codoped with Dy3+ ion to form white-light phosphors of Ba2SrWO6:Mn4+/Dy3+. The excitation spectrum of BSWO:Mn4+ and BSWO:Mn4+/Dy3+ were both in the wavelength range of 250nm to 550 nm. Under 325nm excitation, the sample of BSWO:Mn4+ phosphor show deep red emission peak at 693 nm owing to the 2Eg → 4A2g transition of Mn4+ ions. Meanwhile, the white-light phosphor of BSWO:Mn4+/Dy3+ displayed a wide emission band, consisted of the blue emission at 492nm owing to 4F9/2 → 6H15/2 ,the yellow emission at 582nm owing to 4F9/2 → 6H13/2 and the red emission at 693nm. After we verified by a series of experiments, the optimum concentration of Mn4+ and Dy3+ ions were 0.6mol% and 1.8mol%. The CIE chromaticity coordinate of BSWO:Mn4+ was located at (0.7238, 0.2762) where was in the deep-red-light region. Moreover, we changed the concentration of Dy3+ ions and tuned the CIE chromaticity coordinate from white light (0.3365, 0.3493) to warm-white light (0.4263, 0.3778). Therefore, it was suitable for applying for warm white-light-emitting diodes.

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