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采用低温燃烧法合成SrMgAl10O17:Eu2+及SrMgAl10O17:Eu2+, Er3+蓝色发光材料, 通过X射线衍射仪 (XRD)、扫描电子显微镜 (SEM) 和荧光光谱仪 (PL) 等测试手段对所得样品进行表征. XRD及SEM测试结果表明: 利用低温燃烧法合成SrMgAl10O17材料具有较高的结晶度, 且微量的稀土元素掺杂不会破坏其晶体结构; PL测试结果表明: SrMgAl10O17:Eu2+ 荧光粉在300390 nm范围内可以被有效的激发, 该波长范围与近紫外LED芯片匹配, 发射光谱分布在430520 nm之间, 发射峰位于460 nm, 属蓝光发射材料. 共掺Er3+可显著增强SrMgAl10O17:Eu2+的发光强度, 且当Er3+的掺杂浓度为4%时,样品的发光强度最大, 较单掺Eu2+时样品的发光强度高出54.9%, 表明Er3+对Eu2+的发光具有良好的敏化作用, 该敏化作用的机理可以利用能量传递原理进行解释.
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关键词:
- 低温燃烧法 /
- SrMgAl10O17 /
- 蓝光荧光粉 /
- 敏化作用
The SrMgAl10O17:Eu2+ and SrMgAl10O17:Eu2+, Er3+ blue phosphors were synthesized by the combustion synthesis method. Their crystal structures and luminescent properties were analyzed by X-ray diffraction (XRD)、scanning electron microscope (SEM) and photoluminescence spectra, respectively. The XRD and SEM results indicate that the sample is well-crystallized in the combustion procedure, and its crystal structure has not changed when doped with low concentrations of rare-earth ions. PL results show that the phosphor of SrMgAl10O17:Eu2+ can be effectively excited by near UV LED chip with a broad emission spectrum extending from 430 nm to 520 nm, and has main peaks located at 460nm. Furthermore, the sample of the luminous intensity is the largest when the Er2+, Er3+ co-doped concentration is 4%, and the emission intensity of Sr0.95MgAl10O17:0.05Eu2+, Er3+ phosphor is significantly enhanced 54.9% higher than that of SrMgAl10O17:Eu2+ phosphor. It is indicated that Er3+has good sensitization effect for Eu2+ in luminescence, and this can be explained by the theory of energy transfer.[1] Ponce F A, Bour D P 1997 Nature 386 351
[2] Pimputkar S, Speck J S, DenBaars S P, Nakamura S 2009 Nature Photonics 3 180
[3] Morkoc H, Mohammad S N 1995 Science 267 51
[4] Muthu S, Schuurmans F J, Pashley M D 2002 IEEE Journal on Selected Topics in Quantum Electronics 8 333
[5] Xiao D, Kim K, Bedair S, Zavada J 2004 Appl. Phys. Lett. 84 672
[6] Hirosaki N, Xie R J, Kimoto K, Sekiguchi T, Yamamoto Y, Suehiro T, Mitomo M 2005 Appl. Phys. Lett. 86 211905
[7] Ho Ryu J, Park Y G, Won H S, Suzuki H, Kim S H, Yoon C 2008 J. Ceram. Soc. Jpn. 11 6389
[8] Onuma H, Tanno H, Suzuki A, Sahnoun R, Koyama M, Tsuboi H, Hatakeyama N, Endou A, Takaba H, Carpio C A 2010 J. Soc. Inf. display 18 211
[9] Wanjun T, Donghua C, Ming W 2009 Optics & Laser Technology 41 81
[10] Ju G, Hu Y, Chen L, Wang X 2012 J. Lumin. 132 1792
[11] Mahakhode J, Dhoble S, Joshi C, Moharil S 2007 J. Alloys Compd. 438 293
[12] Manjunathaa C, Sunitha D V, Nagabhushana H, Nagabhushana B M, Sharma S C, Chakradhar R P S 2012 Spectrochim. Acta Part. A 93 140
[13] Ekambaram S, Maaza M 2005 J. Alloys Compd. 395 132
[14] Singh V, Gundu Rao T, Zhu J J 2008 J. Lumin. 128 583
[15] You Y 2010 M. E Dissertation (Wuhan: Huazhong University of Science and Technology) (in Chinese) [游燕 2010 硕士学位论文 (武汉: 华中科技大学)]
[16] Song G H, Liao J W, Jiang B, Ji X M, Cui Y P 2011 Journal of Optoelectronics. Laser. 22 17791783 (in Chinese) [宋国华, 廖建文, 姜斌, 纪宪明, 崔一平 2011 光电子·激光 22 17791783]
[17] Cao S X, Han T, Tu M J 2011 Acta Phys. Sin. 60 127802 (in Chinese) [曹仕秀, 韩涛, 涂铭旌 2011 物理学报 60 127802]
[18] Wu Y, Shi C S 1994 chinese rare earths 15 37 (in Chinese) [吴郢, 石春山 1994 稀土 15 37]
[19] Hong G Y 2011 Rare earth luminescent materials-basic and applied (beijing: Science Press) p200 (in Chinese) [洪广言 2011 稀土发光材料-基础与应用 (北京: 科学出版社) 第200页]
[20] Ryu H, Bartwal K S 2008 Physica B: Condensed Matter 403 3195
[21] Bartwal K S, Ryu H, Brik M G, Sildos I 2009 J. Phys. D: Appl. Phys. 42 245401
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[1] Ponce F A, Bour D P 1997 Nature 386 351
[2] Pimputkar S, Speck J S, DenBaars S P, Nakamura S 2009 Nature Photonics 3 180
[3] Morkoc H, Mohammad S N 1995 Science 267 51
[4] Muthu S, Schuurmans F J, Pashley M D 2002 IEEE Journal on Selected Topics in Quantum Electronics 8 333
[5] Xiao D, Kim K, Bedair S, Zavada J 2004 Appl. Phys. Lett. 84 672
[6] Hirosaki N, Xie R J, Kimoto K, Sekiguchi T, Yamamoto Y, Suehiro T, Mitomo M 2005 Appl. Phys. Lett. 86 211905
[7] Ho Ryu J, Park Y G, Won H S, Suzuki H, Kim S H, Yoon C 2008 J. Ceram. Soc. Jpn. 11 6389
[8] Onuma H, Tanno H, Suzuki A, Sahnoun R, Koyama M, Tsuboi H, Hatakeyama N, Endou A, Takaba H, Carpio C A 2010 J. Soc. Inf. display 18 211
[9] Wanjun T, Donghua C, Ming W 2009 Optics & Laser Technology 41 81
[10] Ju G, Hu Y, Chen L, Wang X 2012 J. Lumin. 132 1792
[11] Mahakhode J, Dhoble S, Joshi C, Moharil S 2007 J. Alloys Compd. 438 293
[12] Manjunathaa C, Sunitha D V, Nagabhushana H, Nagabhushana B M, Sharma S C, Chakradhar R P S 2012 Spectrochim. Acta Part. A 93 140
[13] Ekambaram S, Maaza M 2005 J. Alloys Compd. 395 132
[14] Singh V, Gundu Rao T, Zhu J J 2008 J. Lumin. 128 583
[15] You Y 2010 M. E Dissertation (Wuhan: Huazhong University of Science and Technology) (in Chinese) [游燕 2010 硕士学位论文 (武汉: 华中科技大学)]
[16] Song G H, Liao J W, Jiang B, Ji X M, Cui Y P 2011 Journal of Optoelectronics. Laser. 22 17791783 (in Chinese) [宋国华, 廖建文, 姜斌, 纪宪明, 崔一平 2011 光电子·激光 22 17791783]
[17] Cao S X, Han T, Tu M J 2011 Acta Phys. Sin. 60 127802 (in Chinese) [曹仕秀, 韩涛, 涂铭旌 2011 物理学报 60 127802]
[18] Wu Y, Shi C S 1994 chinese rare earths 15 37 (in Chinese) [吴郢, 石春山 1994 稀土 15 37]
[19] Hong G Y 2011 Rare earth luminescent materials-basic and applied (beijing: Science Press) p200 (in Chinese) [洪广言 2011 稀土发光材料-基础与应用 (北京: 科学出版社) 第200页]
[20] Ryu H, Bartwal K S 2008 Physica B: Condensed Matter 403 3195
[21] Bartwal K S, Ryu H, Brik M G, Sildos I 2009 J. Phys. D: Appl. Phys. 42 245401
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