- 學位論文
摻雜錳之矽酸鋅/氧化矽殼/核微球之合成與光閘晶體(PBG)光譜之分析
Synthesis of Mn-doped Zn2SiO4/SiO2 core-shell structure and characterization of photonic band-gap crystal (PBG)
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摘要
摻雜錳之矽酸鋅(Mn-doped Zn2SiO4)是一種具有高亮度綠光放射(520 nm)的光致發光和陰極發光之螢光材料。在本篇研究中，我們嘗試了六種方法製備矽酸鋅螢光粉。其中ZSpII和ZSpVI具有最好的效果。以膠粒製程和強迫析出法製備氧化矽/矽酸鋅核殼組成之膠體溶液。鋅離子和錳離子會鍍膜於氧化矽顆粒。在乾燥和熱處理之後，在表面析出之鋅/錳離子會與氧化矽反應成為矽酸鋅結晶相。鋅/錳離子的析出行為以感應耦合電漿-原子放射光譜(ICP-AES)做分析；核殼之微結構則由電子顯微鏡做分析；結晶相由X光繞射儀鑑定；光致發光及陰極發光由光譜儀測量。實驗結果顯示隨著熱處理溫度上升，析出物首先形成氧化鋅，並與氧化矽反應形成矽酸鋅結晶。最後可得到由矽酸鋅鍍膜於具有光子晶體特性的氧化矽模版。此外，矽酸鋅粉末也製作成漿料塗佈於透明電極以作為陰極發光元件，同時對於此元件之光學表現做分析。
並列摘要
Manganese doped zinc silicate (Zn2SiO4:Mn) is a kind of phosphor materials that has a photoluminescent (PL) (at 520 nm) and cathode-luminescent (CL) properties with relative high intensity green light emission. In this study, six methods were tried to synthesis Zn2SiO4 powder. Two (ZSpII and ZSpVI) methods have the best performance. The colloidal particle consisted of SiO2 core-Zn2SiO4:Mn shell has been synthesized via colloidal process and forced precipitation. The reactants Zn/Mn ions were coated on the SiO2 particles. After drying and calcination, the Zn/Mn precipitates reacted with SiO2, then transformed to Zn2SiO4 phase. The behavior of Zn/Mn ions precipitation on silica spheres were studied by ICP-AES. The morphology of core-shell structure was investigated by electron microscopy. The phase identification was studied by X-ray diffraction. The PL and CL properties were determined by photon spectrometer. The results showed that with the increase of annealing temperature, the precipitates formed ZnO first, then reacted with SiO2 and transformed to Zn2SiO4 phase. Finally, SiO2 template with PBG structure coated by ZnSiO4:Mn shell was obtained. Besides, Zn2SiO4 powders as a paste coated on transparent electrode for assembling a CL device. The performance of the device was characterized as well.
並列關鍵字
PBG ； core-shell ； phosphor ； Mn-doped Zn2SiO4 ； colloid ； photoluminescence ； cathode-luminescence參考文獻
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延伸閱讀
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- 吳閎遂（2015）。以溶液凝膠法製備矽酸鋰錳添加磷酸鋰錳材料 (1-x)Li2MnSiO4‧xLiMnPO4並探討其電性表現〔碩士論文，國立清華大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0016-1802201617061360
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