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摘要 I
Abstract I
1 引言 1
2 實(shí)驗(yàn)方法 3
2.1 實(shí)驗(yàn)原料 4
2.2 性能測(cè)試 4
2.3 實(shí)驗(yàn)方法 4
3 實(shí)驗(yàn)結(jié)果和討論 5
3.1 鈣鈦礦型釓鋁酸鹽的合成 5
3.1.1 釓鋁酸鹽粉體最佳煅燒溫度分析 5
3.1.2 檸檬酸鹽-硝酸鹽燃燒法 7
3.2 光譜分析 9
4 結(jié)論 11
5 參考文獻(xiàn) 11
致謝 14


GAP：Sm粉紅色熒光粉的制備

摘 要
采用檸檬酸鹽—硝酸鹽燃燒法制備釤摻雜鈣鈦礦型釓鋁酸鹽熒光粉體（GdAlO3：Sm），并對(duì)GdAlO3：Sm3+粉體進(jìn)行發(fā)光性能測(cè)試。測(cè)試時(shí)主要手段有：X射線衍射分析（XRD）、熱分析（TG-DSC）、熒光光譜分析(PL)和紫外激發(fā)照相。
實(shí)驗(yàn)結(jié)果表明：由檸檬酸鹽-硝酸鹽所制得凝膠，在400℃預(yù)燒凝膠1h得到前驅(qū)粉體，將所得粉體研磨后，在900℃高溫煅燒2h可以得到平均粒徑為1.80um單相GdAlO3粉末，且預(yù)燒后煅燒前的研磨可以有效降低粉末粒徑。GdAlO3:Sm熒光粉，在365nm紫外燈照射下呈現(xiàn)明亮粉紅色；在254nm、296nm、402nm激發(fā)下，發(fā)射粉紅色熒光（其中4G5/2–6H7/2發(fā)射峰強(qiáng)度最大，對(duì)應(yīng)602nm）；當(dāng)摻雜濃度達(dá)到7%時(shí)，發(fā)光強(qiáng)度達(dá)到最大。
關(guān)鍵詞：檸檬酸鹽—硝酸鹽燃燒法；釓鋁酸鹽；熒光粉；鈣鈦礦結(jié)構(gòu)；釤


The fabrication of GAP:Sm pink phosphor
Abstract
The citrate-nitrate combustion method was used to prepare the Sm-doping perovskite gadolinium aluminate phosphor (GdAlO3:Sm), and the phophor’s luminescent property was detected. X-ray diffraction analysis (XRD), fluorescence spectroscopy (PL) and UV photograph were the main analysis methods.
Experimental results showed: GdAlO3 single phase powder could be fabricated at 400℃ for 1h then at 900℃ for 2h by the precursor powder which was made by citrate-nitrate combustion method. The final powder size is 1.80um. The grinding after 400℃ for 1h and before final annealing would reduce the powder size greatly. GdAlO3:Sm emitted bright pink luminescence under 365nm UV light. Under 254nm, 296nm, 402nm excitation, the phosphor would emit pink luminescence with the peak at 602nm, respect to Sm3+ 4G5/2–6H7/2 electronic transition; the most suitable doping amount for Sm3+ in GdAlO3 matrix is 7% atomic ratio.
Keywords: the citrate-nitrate combustion method, gadolinium aluminate, phosphors, perovskite, Sm