Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
145278 | Chemical Engineering Journal | 2016 | 9 Pages |
Abstract
A series of color-tunable emitting LuVO4:Tm3+,Dy3+,Eu3+ microspheres were successfully synthesized by a solvothermal process. The structure was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results revealed that the sample is pure tetragonal phase of LuVO4 and consists of 3D-hierachical microspheres with the diameter about 2 μm. Additionally, the possible formation mechanism of microspheres was proposed. Furthermore, the photoluminescence properties of LuVO4:Dy3+,Eu3+ samples were investigated in detail. Both blue and yellow emissions corresponding to the 4F9/2-6H15/2, 4F9/2-6H13/2 transition of Dy3+ ions and red emission corresponding to the 5D0-7FJ (J = 1, 2, 3, 4) transition of Eu3+ ions can be observed in LuVO4:Dy3+,Eu3+ phosphors under 366 nm near-ultraviolet radiation. The energy transfer process between Dy3+ and Eu3+ was demonstrated to be resonant type via dipole-quadrupole mechanism. Additionally, when co-doping Dy3+ with Tm3+ or Eu3+ or tri-doping Tm3+,Dy3+,Eu3+ ions in the single component, the colorful emitting can be obtained by giving abundant blue, green, red, yellow, orange, especially white-light-emission. This type of color-tunable luminescence phosphors may have promising application in solid state lighting application.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Yuexin Wang, Yanhua Song, Xiuqing Zhou, Yi Li, Tingting Cui, Keyan Zheng, Ye Sheng, Haifeng Zou,