Low-temperature Synthesis and Luminescent Properties of Sr2 ZnSi2 O7:Eu3+
Author(s): HE Ling-yun, LI Xiang-qi
Pages: 1306-1310
Year: 2014 Issue: 11
Journal: Chinese Journal of Luminescence
Keyword: red phosphors; hydrothermal treating;
Abstract: Sr2-x ZnSi2 O7∶xEu3+ red phosphors were synthesized with mesoporous MCM-41 as silica source via a low-temperature hydrothermal route with further calcining. The results indicate that Sr2 ZnSi2 O7 phase appears in the hydrothermal reaction product synthesized at 150 ℃ for 16 h, and pure phase Sr2 ZnSi2 O7 is obtained by further calcining at 950℃ for 3 h. Sr2-x ZnSi2 O7∶xEu3+ phos-phors can be effectively excited by 392 nm near-ultraviolet radiation and show the typical emission spectra of Eu3+. The prominent emission transition is at 615 nm assigned to 5 D0→7 F2 . The struc-ture of Sr2 ZnSi2 O7 is not affected by doping appropriate amounts of Eu3+. Sr2-x ZnSi2 O7∶ xEu3+phosphor with x=0. 10 has the highest Eu3+ emission intensity.
Pages: 1306-1310
Year: 2014 Issue: 11
Journal: Chinese Journal of Luminescence
Keyword: red phosphors; hydrothermal treating;
Abstract: Sr2-x ZnSi2 O7∶xEu3+ red phosphors were synthesized with mesoporous MCM-41 as silica source via a low-temperature hydrothermal route with further calcining. The results indicate that Sr2 ZnSi2 O7 phase appears in the hydrothermal reaction product synthesized at 150 ℃ for 16 h, and pure phase Sr2 ZnSi2 O7 is obtained by further calcining at 950℃ for 3 h. Sr2-x ZnSi2 O7∶xEu3+ phos-phors can be effectively excited by 392 nm near-ultraviolet radiation and show the typical emission spectra of Eu3+. The prominent emission transition is at 615 nm assigned to 5 D0→7 F2 . The struc-ture of Sr2 ZnSi2 O7 is not affected by doping appropriate amounts of Eu3+. Sr2-x ZnSi2 O7∶ xEu3+phosphor with x=0. 10 has the highest Eu3+ emission intensity.
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