کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1260058 971716 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure and luminescent properties of luminous polypropylene fiber based on Sr2MgSi2O7:Eu2+, Dy3+
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Structure and luminescent properties of luminous polypropylene fiber based on Sr2MgSi2O7:Eu2+, Dy3+
چکیده انگلیسی

The luminous polypropylene fiber based on long afterglow luminescent material Sr2MgSi2O7:Eu2+, Dy3+ was prepared by melt-spinning process. Micro-morphology, phase composition, crystal structure, spectral features and afterglow properties of the luminescent fiber were tested and analyzed. The results indicated that the fiber had independent superposition phase features of both Sr2MgSi2O7:Eu2+, Dy3+ and polypropylene. The range of its excitation wavelength was located between 250–450 nm; therefore, the luminescent fiber could be excited by ultraviolet or visible light. It could emit blue light of 460 nm wavelength after excitation, which was caused by the 5d-4f transition of Eu2+ ions within the host lattice. The initial luminescent intensity was more than 0.8 cd/m2, and afterglow life lasted 7 h. The afterglow decay was composed of rapid-decaying and slow-decaying processes, and the decay characteristics depended on the depth and concentration of trap level in the Sr2MgSi2O7:Eu2+, Dy3+.

Graphical AbstractAfterglow decay curves of samplesFigure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 32, Issue 8, August 2014, Pages 696–701
نویسندگان
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