Spherical SrMoO₄:Eu³⁺ Phosphors Prepared by Spray Pyrolysis

Abstract:

SrMoO₄:Eu³⁺ micro-spheres with well morphology were fabricated by a one-step and template-free ultrasonic spray pyrolysis method using strontium nitrate and ammonium molybdate as precursors. The as-prepared products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectra (PL). The XRD results indicate that all the XRD peaks can be indexed as SrMoO₄ with a pure tetragonal scheelite structure. The SEM photographs show that the sample particles are spheres with regular spherical shape. The excitation and emission spectra demonstrate that the phosphors could be excited effectively by the ultraviolet light with wavelength 394 nm or visible blue light with wavelength 466 nm, and the highest emission peak locates at 615 nm.

• Periodical: Advanced Materials Research (Volume 924)
• Pages: 93-97
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.924.93
• Online since: April 2014
• Authors: Jing Long Wu, Xia Wang, Gui Hua Peng*, Zhen Hua Liang, Xiao Feng Wang
• Keywords: Red Phosphor, Spheres, SprayPyrolysis, SrMoO₄:Eu³⁺

References

[1] S. Nakamura, T. Mukai, M. Sench, Candela-class high-brightness InGaN/AlGaN double-heterostructure blue-light-emitting diodes, Appl. Phys. Lett. 64 (1994) 1687–1689.

DOI: 10.1063/1.111832

[2] P.F. Smet, K. Korthout, J.E. Van Haecke, D. Poelman, Using rare earth doped thiosilicates phosphors in white-light emitting LEDs: towards low colour temperature and high colour rendering, Mater. Sci. Eng. B 146 (2008) 264–268.

DOI: 10.1016/j.mseb.2007.07.042

[3] S. Neeraj, N. Kijima, A.K. Cheetham, Novel red phosphors for solid-state lighting: the system NaM(MoO4)x(WO4)1−x: Eu3+ (M = Gd, Y, Bi), Chem. Phys. Lett. 387 (2004) 2–6.

DOI: 10.1016/j.cplett.2003.12.130

[4] F. Lei, B. Yan, Hydrothermal synthesis and luminescence of CaMO4: RE3+ (M = W, Mo; RE = Eu, Tb) submicro-phosphors, J. Solid State Chem. 181 (2008) 855–862.

DOI: 10.1016/j.jssc.2008.01.033

[5] C.F. Guo, D.X. Huang, Q. Su, Methods to improve the fluorescence intensity of CaS: Eu2+ red-emitting phosphor for white LED, Mater. Sci. Eng. B 130 (2006) 189–193.

DOI: 10.1016/j.mseb.2006.03.008

[6] C. Kodaira, H.F. Brito, M.C.F.C. Felinto, Luminescence investigation of Eu3+ ion in the RE2(WO4)3 matrix (RE = La and Gd) produced using the Pechini method, J. Solid State Chem. 171 (2003) 401–407.

DOI: 10.1016/s0022-4596(02)00221-9

[7] Y.C. Kang, H.S. Roh, S.B. Park, Preparation of Y2O3: Eu phosphor particles of filled morphology at high precursor concentrations by spray pyrolysis, Adv. Mater. 12 (2000) 451-453.

DOI: 10.1002/(sici)1521-4095(200003)12:6<451::aid-adma451>3.0.co;2-s

[8] W.Q. Yang, H.G. Liu, G.K. Liu, Y. Lin, M. Gao, X.Y. Zhao, W.C. Zheng, Y. Chen, J. Xu, L.Z. Li, Trivalent europium-doped strontium molybdate red phosphors in white light-emitting diodes: Synthesis, photophysical properties and theoretical calculations, Acta Mater. 60 (2012).

DOI: 10.1016/j.actamat.2012.06.052

[9] Z. Ci, Y. Wang, J. Zhang, Y. Sun, Ca1-xMo1-ySiyO4: Eux3+: A novel red phosphor for white light emitting diodes, Physica B. 403 (2008) 670-674.

DOI: 10.1016/j.physb.2007.09.071

[10] X. Li, Z.P. Yang, L. Guan, Q.L. Guo, S.F. Huai, P.L. Li, Synthesis and properties of Eu3+ activated strontium molybdate phosphor, J. Rare Earth. 25 (2007) 706-709.

DOI: 10.1016/s1002-0721(08)60011-3