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采用化学共沉淀法制备了Ca2-xMgSi2O7:xEu2+绿色荧光粉.用X射线衍射仪、荧光分光光度计及光色综合测试系统对Ca2-xMgSi2O7:xEu2+绿色荧光粉的相结构、发光性能进行了测试.结果表明:其激发光谱分布在300480 nm波长范围,谱峰位于389,430 nm处,可以被InGaN管芯产生的360480 nm辐射有效激发;在波长为430 nm蓝光激发下,其发射光谱谱峰位于531 nm处.Ca2-xMgSi2O7:xEu2+绿色荧光粉的发光强度随Eu2+掺杂量的增加而增强,当Eu2+掺杂量x为0.04时,发光强度达到最大值,而后开始降低,发生浓度猝灭.根据Dexter能量共振理论,浓度猝灭是由电偶极-电偶极相互作用引起的.
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关键词:
- Ca2MgSi2O7∶Eu2+ /
- 绿色荧光粉 /
- 发光特性 /
- 白光发光二极管
The Ca2-xMgSi2O7∶xEu2+ green phosphor is synthesized by chemical coprecipitation. X-ray diffraction and the fluorescence spectrophotometry are used to investigate the structural and the luminescent properties of the Ca2-xMgSi2O7∶xEu2+ green phosphor. The result shows that the excitation spectrum of the Ca2-xMgSi2O7∶xEu2+green phosphor extends from 300 nm to 480 nm, and the peaks appear around 389 and 430 nm, thus the phosphor can be excited effectively by InGaN chip in a range of 360480 nm. The peak of the emission spectrum appears around 531 nm. The emission spectrum intensity first increases and then decreases with Eu2+ doping concentration increasing. The strongest emission intensity is obtained when Eu2+doping concentration reaches 0.04. The concentration self-quenching is attributed to the d-d interaction according to the Dexter theory.[1] Shen C, Shao Q Y, Han X L, Dong Y, Jing J Q 2010 Chin. J. Lumin. 31 44 (in Chinese)[沈 超、邵起越、韩学林、董 岩、蒋建清 2010 发光学报 31 44]
[2] Park J K, Kim C H, Park S H 2004 Appl. Phys. Lett. 84 1647
[3] [4] [5] Zhang X M, Li W L, Shi L, Qiao X B, Seo H J 2010 Appl. Phys. B 99 279
[6] Yang Z P, Liu Y F 2006 Acta Phys. Sin. 55 4946 (in Chinese) [杨志平、刘玉峰 2006 55 4946]
[7] [8] Wang Z J, Li P L, Wang G, Yang Z P, Guo Q L 2008 Acta Phys. Sin. 57 4575 (in Chinese) [王志军、李盼来、王 刚、杨志平、郭庆林 2008 57 4575]
[9] [10] Zhang S H, Hu J F, Zhou M B, Wang J J, Xie B 2010 Chin. J. Lumin.31 54 (in Chinese)[章少华、胡江峰、周明斌、王建军、谢 冰 2010 发光学报 31 54]
[11] [12] Guo J L, Shen Y N 2009 J. Inner Mongolia Normal Univ. (Nat. Sci. Ed.) 38 366 (in Chinese)[郭金玲、沈岳年 2009 内蒙古师范大学学报 (自然科学汉文版) 38 366]
[13] [14] [15] Fang Y, Ye X Y 2008 J. Jiangxi Normal Univ. (Nat. Sci.) 32 273 (in Chinese) [方 英、叶信宇 2008 江西师范大学学报 (自然科学版) 32 273]
[16] Zhang X Y, Zhang L L, Zhang Y P, Dong F, Yu C C 2010 J. Chin. Ceram. Soc. 38 206 (in Chinese) [张希艳、张亮亮、张云鹏、董 飞、于冲冲 2010 硅酸盐学报 38 206 ]
[17] [18] Ma M X,Zhu D C,Tu M J 2009 Acta Phys. Sin. 58 5826 (in Chinese) [马明星、朱达川、涂铭旌 2009 58 5826]
[19] [20] [21] Dexter D L, Schulman J H 1954 J. Chem. Phys. 22 1063
[22] [23] Yang Z P, Ma X, Zhao P P, Song Z F 2010 Acta Phys. Sin. 59 5387 (in Chinese) [杨志平、马 欣、赵盼盼、宋兆丰 2010 59 5387 ]
[24] Wang Z J, Liu H Y, Yang Z P, Guo Q L, Li P L 2009 J. Chin. Ceram. Soc. 37 1585 ( in Chinese) [王志军、刘海燕、杨志平、郭庆林、李盼来 2009 硅酸盐学报 37 1585]
[25] [26] [27] Yang Z P, Ma S Y, Yu H W, Ma X 2010 J. Func. Mater. 41 1228 (in Chinese) [杨志平、马淑媛、于红伟、马 欣 2010 功能材料 41 1228]
[28] [29] Aitasalo T, Hls J, Kirm M 2007 Radiat. Meas. 42 644
[30] Zhang X G, Zhang J L, Wang R 2010 Am. Ceram. Soc. 93 1368
[31] -
[1] Shen C, Shao Q Y, Han X L, Dong Y, Jing J Q 2010 Chin. J. Lumin. 31 44 (in Chinese)[沈 超、邵起越、韩学林、董 岩、蒋建清 2010 发光学报 31 44]
[2] Park J K, Kim C H, Park S H 2004 Appl. Phys. Lett. 84 1647
[3] [4] [5] Zhang X M, Li W L, Shi L, Qiao X B, Seo H J 2010 Appl. Phys. B 99 279
[6] Yang Z P, Liu Y F 2006 Acta Phys. Sin. 55 4946 (in Chinese) [杨志平、刘玉峰 2006 55 4946]
[7] [8] Wang Z J, Li P L, Wang G, Yang Z P, Guo Q L 2008 Acta Phys. Sin. 57 4575 (in Chinese) [王志军、李盼来、王 刚、杨志平、郭庆林 2008 57 4575]
[9] [10] Zhang S H, Hu J F, Zhou M B, Wang J J, Xie B 2010 Chin. J. Lumin.31 54 (in Chinese)[章少华、胡江峰、周明斌、王建军、谢 冰 2010 发光学报 31 54]
[11] [12] Guo J L, Shen Y N 2009 J. Inner Mongolia Normal Univ. (Nat. Sci. Ed.) 38 366 (in Chinese)[郭金玲、沈岳年 2009 内蒙古师范大学学报 (自然科学汉文版) 38 366]
[13] [14] [15] Fang Y, Ye X Y 2008 J. Jiangxi Normal Univ. (Nat. Sci.) 32 273 (in Chinese) [方 英、叶信宇 2008 江西师范大学学报 (自然科学版) 32 273]
[16] Zhang X Y, Zhang L L, Zhang Y P, Dong F, Yu C C 2010 J. Chin. Ceram. Soc. 38 206 (in Chinese) [张希艳、张亮亮、张云鹏、董 飞、于冲冲 2010 硅酸盐学报 38 206 ]
[17] [18] Ma M X,Zhu D C,Tu M J 2009 Acta Phys. Sin. 58 5826 (in Chinese) [马明星、朱达川、涂铭旌 2009 58 5826]
[19] [20] [21] Dexter D L, Schulman J H 1954 J. Chem. Phys. 22 1063
[22] [23] Yang Z P, Ma X, Zhao P P, Song Z F 2010 Acta Phys. Sin. 59 5387 (in Chinese) [杨志平、马 欣、赵盼盼、宋兆丰 2010 59 5387 ]
[24] Wang Z J, Liu H Y, Yang Z P, Guo Q L, Li P L 2009 J. Chin. Ceram. Soc. 37 1585 ( in Chinese) [王志军、刘海燕、杨志平、郭庆林、李盼来 2009 硅酸盐学报 37 1585]
[25] [26] [27] Yang Z P, Ma S Y, Yu H W, Ma X 2010 J. Func. Mater. 41 1228 (in Chinese) [杨志平、马淑媛、于红伟、马 欣 2010 功能材料 41 1228]
[28] [29] Aitasalo T, Hls J, Kirm M 2007 Radiat. Meas. 42 644
[30] Zhang X G, Zhang J L, Wang R 2010 Am. Ceram. Soc. 93 1368
[31]
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