Dy3+离子在可见光范围内的两个主发射分别起源于4F9/2→6H15/2的蓝光和4F9/2→6H13/2的黄光.4F9/2→6H13/2属于超灵敏跃迁,跃迁几率强烈受环境的影响,因此,两种跃迁的分支比随离子所处环境的变化而改变.通过高温熔融的方法制备一系列Dy2O3掺杂的ZnO-B2O3-P2O5玻璃,并计算了Dy3+离子发光的黄、蓝强度比和色坐标.结果表明:随着ZnO百分含量的增加,P2O5百分含量的减小,Dy3+离子发光的黄、蓝强度比减小,同时色坐标趋于白光;而B2O3的作用居中.进一步的研究发现,B2O3在玻璃中的存在方式[BO3]和[BO4]对Dy3+离子发光的黄、蓝强度比的作用不同.[BO3]使Dy3+离子发光的黄、蓝强度比增大,[BO4]则相反.通过固体核磁共振谱和红外光谱的测试,表明所研究的三元系ZnO-B2O2-P2O5玻璃样品,由于P2O5的含量较高,B2O3基本以[BO4]四面体为结构单元.因此Dy3+发光的黄、蓝比与玻璃的组成及百分含量之间存在着上述规律性.
参考文献
| [1] | Su Q .Influence of environment on the luminescence of rare earths[J].Journal of Luminescence,1988,40-41:113. |
| [2] | Pei Z W;Su Q;Li S .Investigation on the luminescence properties of By3+ and Eu3+ in alkaline-earth borates[J].Luminescence:The Journal of Biological & Chemical Luminescence,1991,50:123. |
| [3] | Pei Z W;Su Q;Chui Y S .Investigation on the luminescence properties of Dy3+ and Eu3+ in M3Ln2(BO3)4(M = Ca,Sr,Ba;Ln= La,Gd,Y)[J].Material Researcher Bull,1991,26:1059. |
| [4] | Su Q;Pei Z W;Chi L S;Zhang H J Zhang Z Y Zon F .The yellow to-blue intensity ratio (Y/B) of Dy3+ emission[J].Journal of Alloys and Compounds,1993,192:25. |
| [5] | Su Q;Lin J;Li B .A study on the luminescence properties of Eu3+ and Dy3+ in M2RE8(SiO4)6O2(M = Mg,Ca;RE=Y,Gd,La)[J].Journal of Alloys and Compounds,1995,225:120. |
| [6] | Kondelka L;Mosener P .Borophcephate glasses of the ZnOB2O3-P2O5 system[J].Materials Letters,2000,42:194. |
| [7] | Tanabe S.;Hanada T.;Soga N.;Kang J. .Yellow/blue luminescences of Dy3+-doped borate glasses and their anomalous temperature variations[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1998(1/3):170-175. |
| [8] | Lin H;Pun E Y B;Wang X J;Liu X R .Intense visible fluorescence and energy transfer in Dy3+,Th3+,Sm3+ and Eu3+doped rare earth borate glasses[J].Journal of Alloys and Compounds,2005,390:197. |
| [9] | Bobha K C;Rao K J .Luminescence and energy transfer between Dy3+ and Tb3+ in Nasicon-type phosphate glasses[J].Journal of Physics and Chemistry of Solids,1996,9:1263. |
| [10] | 荆其诚;焦书兰;喻柏林;胡维生.色度学[M].北京:科学出版社,1979 |
| [11] | Smets B M J .Phosphors based on rare-earths,a new ear in fluorescent lighting[J].Materials Chemistry and Physics,1987,16:283. |
| [12] | 陆佩文.无机材料科学基础[M].武汉:武汉工业大学出版社,1996 |
| [13] | Suzuya K;Itoh K;Kajinami A;Loong CK .The structure of binary zinc phosphate glasses[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2004(0):80-87. |
| [14] | Adamczyk A.;Handke M. .The spectroscopic studies of gel-derived glasses and glass-ceramics in the Na2O (Li2O)B2O3-P2O5-SiO2 system[J].Journal of Molecular Structure,2001(Special Issue SI):47-54. |
| [15] | Ternane R.;Cohen-Adad MT.;Boulon G.;Florian P.;Massiot D. Trabelsi-Ayedi M.;Kbir-Ariguib N. .Synthesis and characterization of new oxyboroapatite. Investigation of the ternary system CaO-P2O5-B2O3[J].Solid state ionics,2003(1/2):183-195. |
| [16] | Zhong J H;Bray P J .Change in boron coordination in alkali borate glasses,and mixed alkali effccts,as elucidated by NMR[J].Journal of Non-crystalline Solids,1989,111:67. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%