Academic Journal
Transparent SrAl2O4:Eu2+, Dy3+ glass-ceramics with significant mechanoluminescence.
| العنوان: | Transparent SrAl2O4:Eu2+, Dy3+ glass-ceramics with significant mechanoluminescence. |
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| المؤلفون: | Liu, Shuchang1 (AUTHOR), Cui, Yuntao2 (AUTHOR), Sun, Xizhi3 (AUTHOR), Jiao, Zhiwei1 (AUTHOR) jzwzwj@163.com, An, Kang1 (AUTHOR), Wu, Yuhao1 (AUTHOR) |
| المصدر: | Journal of the European Ceramic Society. Oct2024, Vol. 44 Issue 13, p7921-7926. 6p. |
| مصطلحات موضوعية: | *GLASS-ceramics, *CRYSTAL glass, *CRYSTAL morphology, *SCANNING electron microscopy, *X-ray diffraction |
| مستخلص: | Transparent SrAl 2 O 4 :Eu2+,Dy3+ glass-ceramics with significant mechanoluminescence (ML) have been prepared by the melt quenching method. Phase composition and crystal morphology of the glass-ceramics have been studied. X-ray diffraction (XRD) and scanning electron microscopy (SEM) tests indicate that SrAl 2 O 4 crystals in the glass matrix have an oriented growth characteristic influenced by the doping Dy3+ ions. Meanwhile, more Dy3+ ions doping results in refined grain structures and a more ordered arrangement of crystals. Photoluminescence (PL) spectra show that as the concentration of Dy3+ ions increases, the luminescence intensity of the glass-ceramics decreases, but long persistent luminescence (LPL) enhances. The emission peaks at 522 nm attributed to 4 f65d1→4 f7 transitions, arise from the combined luminescence effect of Eu2+ ions in both crystal and glass phases. Further investigation indicates that the as-prepared glass-ceramics exhibit significant mechanoluminescence (ML), which can last for a relatively long duration. [Display omitted] • Transparent SrAl 2 O 4 :Eu2+,Dy3+ glass-ceramics were prepared. • SrAl 2 O 4 crystal grains have a certain crystallographic orientation in the glass matrix. • Dy3+ ions can refine the crystallization. • The luminescence of glass-ceramics is combined luminescence effect of Eu2+ ions in both crystal and glass phases. • SrAl 2 O 4 glass-ceramics have a significant mechanoluminescence. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: | Academic Search Index |
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