کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1459433 | 989593 | 2016 | 8 صفحه PDF | دانلود رایگان |
White light emitting YVO4:Eu3+,Tm3+,Dy3+ nanometer- and submicrometer-sized particles were successfully prepared using an ion exchange method. Undoped YVO4 nanoparticles were firstly synthesized by a solvothermal method, and Eu3+, Tm3+, and Dy3+ doping ions were then ion exchanged into these undoped YVO4 nanoparticles to form the Eu3+,Dy3+,Tm3+-codoped YVO4 nanoparticles. After thermal annealing, the Eu3+,Dy3+,Tm3+-codoped YVO4 particles showed strong luminescence. The Eu3+, Dy3+, and Tm3+ dopants emitted red, blue, and green lights, respectively. The doping concentrations of the Eu3+, Dy3+, and Tm3+ dopants were optimized for white light emission. X-ray diffraction, transmission electron microscopy, and fluorescence spectroscopy were used to characterize and analyze the white light emitting YVO4:Eu3+,Tm3+,Dy3+ nanometer- and submicrometer-sized particles.
Journal: Ceramics International - Volume 42, Issue 1, Part A, January 2016, Pages 302–309