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摘要 1
Abstract 2
1 引言 3
1.1選題的依據(jù)及意義 3
1.2國(guó)內(nèi)外研究現(xiàn)狀及發(fā)展趨勢(shì) 3
2 實(shí)驗(yàn) 5
2.1 實(shí)驗(yàn)試劑設(shè)備 5
2.2實(shí)驗(yàn)內(nèi)容 5
3 結(jié)果與討論 7
3.1物相分析 7
3.2 水熱法熒光光譜分析 8
3.2.1 樣品MgGa2O4：Eu3+的光譜分析 8
3.2.2 樣品MgGa2O4：Dy3+的光譜分析 13
4 結(jié)論 18
參考文獻(xiàn) 18
致謝 20


鎵酸鹽的納米晶合成與光譜特性


摘要
通過(guò)水熱法合成了MgGa2O4：R（R=Dy3+、Eu3+）系列熒光粉，觀察到各自的發(fā)光以及各自不同摻雜比的發(fā)光。通過(guò)檢測(cè)出的XRD圖譜對(duì)MgGa2O4：R（R=Dy3+、Eu3+）進(jìn)行物相分析，得到熒光粉樣品的平均粒徑。通過(guò)對(duì)各自不同摻雜比的激發(fā)譜和發(fā)射譜進(jìn)行比較，得到隨著Dy3+濃度的減小，熒光粉的發(fā)射峰和激發(fā)峰強(qiáng)度逐漸增大，隨著Eu3+濃度的增加，熒光粉的發(fā)射峰和激發(fā)峰強(qiáng)度逐漸增大。結(jié)果表明可以通過(guò)減少Dy3+濃度，來(lái)增強(qiáng)熒光發(fā)光強(qiáng)度。通過(guò)增大Eu3+濃度，來(lái)增強(qiáng)熒光粉的發(fā)光強(qiáng)度。

關(guān)鍵詞：稀土；MgGa2O4：R（R=Dy3+、Eu3+）；熒光；XRD


Synthesis and spectral characteristics of gallate nanocrystalline
Abstract
A series of MgGa2O4：R（R=Dy3+、Eu3+） phosphor synthesized by hydrothermal method , observed their luminescence what is with different doping ratio of luminescence.MgGa2O4：R（R=Dy3+、Eu3+）Phase analysis by XRD spectra,get the average particle diameter of the phosphor samples obtained.By fluorescence characteristics on different doping ratio to compare there emission spectra and excitation spectra ,found that with the Eu3+ concentration increases, the phosphor emission peak and the excitation peak luminous intensity gradually become larger.With the Dy3+ concentration increases,the phosphor emission peak and the excitation peak luminous intensity gradually become smaller.The results showed that by reducing the Dy3+ concentration, to enhance the fluorescence emission intensity. By increasing the Eu3+ concentration, to enhance the fluorescence emission intensity.

Keywords:rare earths；MgGa2O4：R（R=Dy3+、Eu3+）；phosphor；XRD.