Preparation, Structural Analysis and Luminescence Properties of Nanocrystalline Phosphor Gd203 : Eu |
| |
引用本文: | 徐美,董宁,孔庆妍,张慰萍,尹民,夏上达.Preparation, Structural Analysis and Luminescence Properties of Nanocrystalline Phosphor Gd203 : Eu[J].中国稀土学报(英文版),2004,22(1):40-44. |
| |
作者姓名: | 徐美 董宁 孔庆妍 张慰萍 尹民 夏上达 |
| |
作者单位: | [1]StructureResearchLaboratory,UniversityofScienceandTechnologyofChina,ChineseAcademyofSciences,Hefei230026,China [2]Departmentofphysics,UniversityofScienceandTechnologyofChina,Hefei230026,China |
| |
摘 要: | Nanocrystalline monoclinic and cubic Gd2O3:Eu with different Eu^3 concentration were prepared using glycinenitrate combustion synthesis. By changing the ratio of glycine to nitrate and proper heat treatment, pure monoclinic and cubic Gd203:Eu with particle size less than 40 nm can be easily formed. Under ultraviolet excitation, main emission of Eu^3 (^5D0→^7F2) locates at 624 nm in monoclinic Gd2O3:Eu and 611 nm in cubic sample, In excitation spectrum two broad bands corresponding to the host absorption and charge transfer state (CTS) and f-f transitions of Gd^3 and Eu^3 were observed and discussed. The quenching concentration of monoclinic and cubic Gd2O3:Eu is 10% and 15 %, respectively,both of which are much higher than that of bulk Gd2O3 : Eu.
|
关 键 词: | Gd203:Eu 荧光材料 制备 结构分析 发光性能 掺杂 稀土 铕 纳米晶 |
本文献已被 维普 等数据库收录! |
|