采用Sol-gel方法合成了Al和Pr离子共掺的红色纳米晶SrTiO3:0.002Pr,xAl(x=0～0.35)荧光体.XRD分析表明,经1200℃高温烧成后所得的荧光体为单一组成的SrTiO3立方相,空间群为Pm-3m,晶胞参数计算得α为3.9043 nm.光谱测试表明,该荧光体的主发射峰位于617nm,对应于Pr3+离子的1D2→3H4跃迁发射.随着Al3+掺杂浓度的增加,发光强度先增后减,当x=0.26时发光强度达到最大值,此时荧光体的发光强度约是未掺Al样品发光强度的2倍.晶体结构和光谱性能分析暗示,Al3+离子掺入可能提高了SrTiO3:Pr基质晶体的完整度,从而增加其发光强度.
参考文献
| [1] | Yamamoto H.;Okamoto S.;Kobayashi H. .Luminescence of rare-earth ions in perovskite-type oxides: from basic research to applications[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2002(1/4):325-332. |
| [2] | Vecht A;Smith D W;Chadha S S et al.[J].Journal of Vacuum Science and Technology B:Microelectronics and Nanometer Structures,1994,12(02):781. |
| [3] | Yamamoto H;Okamoto S;Toki H.[A].,1997:17. |
| [4] | Kim J;Choi J H;Cheon C et al.[J].Ceramics International,2004,30:2029. |
| [5] | Hong Zhanglian;Zhang Pengyue;Wang Minquan .(Zn,Ca) Solid-Solution Behavior and Its Effect on Luminescence Properties in Ca_(1-x)Zn_xTiO_3:0.002Pr~(3+) Phosphors[J].Journal of Rare Earths,2005(6):662-667. |
| [6] | 彭丽霞,洪樟连,周时风,王民权.等价Ca、Sr离子固溶对CaTiO3：0.002Pr3+发光特性的影响[J].无机材料学报,2005(05):1049-1053. |
| [7] | Diallo P L;Jenlouis K;Boutinaud P et al.[J].Journal of Alloys and Compounds,2001,323:218. |
| [8] | Jin Y K;Yong C Y;Duk Y J et al.[J].Journal of Vacuum Science and Technology B:Microelectronics and Nanometer Structures,2003,21(01):536. |
| [9] | Okamoto S;Kobayashi H;Yamamoto H .[J].Journal of Applied Physics,1999,86(10):5594. |
| [10] | Itoh S;Toki H;Tamura K et al.[J].Journal of Applied Physics Part 1,1999,1:6387. |
| [11] | Eric P;Philippe B;Genevieve B et al.[J].Journal of Alloys and Compounds,2004,374:202. |
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