Through a polyethylene-glycol-assisted hydrothermal method, a series of potassium fluoride (KF)-Yttrium (III) fluoride (YF3) system materials have been synthesized. By controlling the reactant ratios of KF: rare earth ions (RE3+), the hydrothermal temperatures, and the pH values of the prepared solutions, the final products can evolve among the orthorhombic phase of YF3 and/or the tetragonal phase of potassium triyttrium decafluoride (KY3F10) and/or the cubic phase of potassium yttrium tetrafluoride (KYF4). The final products are characterized by the x-ray diffraction (XRD) patterns, the field-emission scanning electron microscopy (FE-SEM) images, the energy-dispersive spectroscopy (EDS) patterns, the photoluminescence (PL) spectra, and the luminescent dynamic decay curves. The XRD patterns of the samples suggest the phase evolution of the final products. The FE-SEM images and the EDS patterns prove that. Europium ion (Eu3+) acting as a probe, its PL spectra and the luminescent decay curves all put together prove the phase evolution of the final products. The research can be extended to study the other KF-REF3 system materials.
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H.X. Mai, Y.W. Zhang, R. Si, Z.G. Yan, L.D. Sun, L.P. You, and C.H. Yan: High-quality sodium rare-earth fluoride nanocrystals: Controlled synthesis and optical properties. J. Am. Chem. Soc. 128, 6426 (2006).
B. Yan and J.H. Wu: Facile composite synthesis and photolumines-cence of NaGd(Mo04)2: Ln + (Ln = Eu, Tb) submicrometer phosphors. J. Mater. Res. 24, 32 (2009).
M. Yu, H. Wang, C.K. Lin, G.Z. Li, and J. Lin: Sol-gel synthesis and photoluminescence properties of spherical SiO2@LaP04:Ce3+/Tb3+ particles with a core-shell structure. Nanotechnology 17, 3245 (2006).
C.X. Li and J. Lin: Rare earth fluoride nano-/microcrystals: Synthesis, surface modification and application. J. Mater. Chem. 20, 6831 (2010).
C-H. Liang, Y-C. Chang, Y-S. Chang, and S. Wu: Photoluminescence properties of Eu +-doped BaY2Zn05 phosphors under near-ultraviolet irradiation. J. Mater. Res. 25, 850 (2010).
N. Menyuk, K. Dwight, and J.W. Pierce: NaYF4: Yb, Er—an efficient upconversion phosphor. Appl. Phys. Lett. 21, 159 (1972).
J.L. Sommerdijk and A. Bril: Phosphors for the conversion of infrared radiation into visible light. Philips Tech. Rev. 34, 1 (1974).
E. Downing, L. Hesselink, J. Ralston, and R. Macfarlane: A three-color, solid-state, three-dimensional display. Science 273, 1185 (1996).
C.Y. Cao, H.K. Yang, J.W. Chung, B.K. Moon, B.C. Choi, J.H. Jeong, and K.H. Kim: Ce3+/Tb3+ activated GdF3, KGdF4, and CeF3 submicro/nanocrystals: Synthesis, phase evolution, and optical properties. J. Mater. Res. 26, 2916 (2011).
S. Shionoya and W.M. Yen: Phosphor Handbook (CRC Press, Boca Raton, FL, 1999).
P.R. Diamente, M. Raudsepp, and F.C.J.M. van Veggel: Dispersible Tm +-doped nanoparticles that exhibit strong 1.47 um photoluminescence. Adv. Funct. Mater. 17, 363 (2007).
X.H. Liu, L.M. Wang, Z.Y. Wang, and Z.Q. Li: Synthesis of biocompatible and luminescent NaGdF4:Yb, Er@Carbon nanoparticles in water-in-oil microemulsion. J. Mater. Res. 26, 82 (2011).
K.W. Kramer, D. Biner, G. Frei, H.U. Güdel, M.P. Hehlen, and S.R. Liithi: Hexagonal sodium yttrium fluoride-based green and blue emitting upconversion phosphors. Chem. Mater. 16, 1244 (2004).
R. Wegh, H. Donker, K. Oskam, and A. Meijerink: Visible quantum cutting in LiGdF4:Eu3+ through downconversion. Science 283, 663 (1999).
P.E.A. Möbert, A. Diening, E. Heumann, G. Huber, and B.H.T. Chai: Room-temperature continuous-wave upconversion-pumped laser emission in Ho, Yb:KYF4 at 756, 1070, and 1390 nm. Laser Phys. 8, 210 (1998).
A. Braud, S. Girard, J.L. Doualan, M. Thuau, R. Moncorgé, and A.M. Tkachuk: Energy-transfer processes in Yb:Tm-doped KY3F10, LiYF4, and BaY2F8 single crystals for laser operation at 1.5 and 2.3 um. Phys. Rev. B 61, 5280 (2000).
D.M. Yang, G.G. Li, X.J. Kang, Z.Y. Cheng, P.A. Ma, C. Peng, H.Z. Lian, C.X. Li, and J. Lin: Room temperature synthesis of hydrophilic Ln3+-doped KGdF4 (Ln = Ce, Eu, Tb, Dy) nanoparticles with controllable size: Energy transfer, size-dependent and color-tunable luminescence properties. Nanoscale 2, 3450 (2012).
N. Kodama and Y. Watanabe: Visible quantum cutting through downconversion in Eu3+-doped KGd3F10 and KGd2F7 crystals. Appl. Phys. Lett. 84, 4141 (2004).
T. Lee, L. Luo, W. Diau, T. Chen, B. Cheng, and C. Tung: Visible quantum cutting through downconversion in green-emitting K2GdF5:Tb3+ phosphors. Appl. Phys. Lett. 89, 131121 (2006).
L.W. Yang, Y.Y. Zhang, J.J. Li, Y. Li, J.X. Zhong, and P.K. Chu: Magnetic and upcon verted luminescent properties of multifunctional lanthanide-doped cubic KGdF4 nanocrystals. Nanoscale 2, 2805 (2010).
H-T. Wong, F. Vetrone, R. Naccache, H.L.W. Chan, J.H. Hao, and J.A. Capobianco: Water-dispersible ultrasmall multifunctional KGdF4:Tm3+, Yb3+ nanoparticles with near-infrared to near-infrared upconversion. J. Mater. Chem. 21, 16589 (2011).
C.Y. Cao, H.K. Yang, J.W. Chung, B.K. Moon, B.C. Choi, J.H. Jeong, and K.H. Kim: Hydrothermal synthesis and enhanced photoluminescence of Tb3+ in Ce3+/Tb3+-doped KGdF4 nanocrystals. J. Mater. Chem. 21, 10342 (2011).
C.X. Li, Z.H. Xu, D.M. Yang, Z.Y. Cheng, Z.Y. Hou, P.A. Ma, H.Z. Lian, and J. Lin: Well-dispersed KRE3F10 (RE = Sm-Lu, Y) nanocrystals: Solvothermal synthesis and luminescence properties. CrystEngComm 14, 670 (2012).
J.H. Liang, Q. Peng, X. Wang, X. Zheng, R.J. Wang, X.P. Qiu, C.W. Nan, and Y.D. Li: Chromate nanorods/nanobelts: General synthesis, characterization, and properties. Inorg. Chem. 44, 9405 (2005).
L.G. Deshazer and G.H. Dieke: Spectra and energy levels of Eu in LaCl3. J. Chem. Phys. 38, 2190 (1963).
M. Yu, J. Lin, and J. Fang: Silica spheres coated with YV04:Eu layers via sol—gel process: A simple method to obtain spherical core-shell phosphors. Chem. Mater. 17, 1783 (2005).
F. Tao, Z.J. Wang, L.Z. Yao, W.L. Cai, and X.G. Li: Synthesis and photoluminescence properties of truncated octahedral Eu-doped YF3 submicrocrystals or nanocrystals. J. Phys. Chem. C 111, 3241 (2007).
X.Y. Chen and G.K. Liu: The standard and anomalous crystal-field spectra of Eu3+. J. Solid State Chem. 178, 419 (2005).
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2010-0022540) and also this research was supported by NCRC (National Core Research Center) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2010-0001-226). The first author thanks for the financial support of National Natural Science Foundation of China (Grant No. 61205217), the project of Young Excellent Doctor (JZB11001) of Jinggangshan University, and the project of the Key Subject of Atomic and Molecular Physics supported by Jiangxi Province (2011-1015), China.
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Cao, C., Kyoung Yang, H., Kee Moon, B. et al. Hydrothermal synthesis, phase evolution, and optical properties of Eu3+-doped KF-YF3 system materials. Journal of Materials Research 27, 2988–2995 (2012). https://doi.org/10.1557/jmr.2012.331