Effect of the Co-Substitution of Ca²⁺ and Si⁴⁺ on the Structure and Luminescence Properties of Y₃Al₅O₁₂: Ce³⁺

Abstract:

A series of phosphors with the composition of Y_2.95-xCa_xAl_5-xSi_xO₁₂: Ce³⁺_0.05 (x=0, 0.15, 0.30, 0.45, 0.60, 0.75) were synthesized with conventional solid state reactions. The results of XRD patterns show that in a certain extent, the co-substitution of Ca²⁺ and Si⁴⁺ does not change the garnet structure of samples, while results in the shrink of crystal lattice(The cell parameter of phosphors decreases with the increment of co-substitution content monotonically. The former is in linear with the latter). The measurement of the excitation and emission spectra shows that the co-substitution of Ca²⁺ and Si⁴⁺ make the emission peak move to short wavelength. The amount of blue shift is also in linear with the co-substitution content.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 1844-1849
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.1844
• Online since: May 2011
• Authors: Zhong Fei Mu, Yi Hua Hu, Yin Hai Wang, Li Chen, Xiao Juan Wang
• Keywords: Blue Shift, Crystal Lattice Shrink, Photoluminescence (PL), Y₃Al₅O₁₂

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