Optical performance study of Sr₂ZnSi₂O₇:Eu²⁺,Dy³⁺, SrAl₂O₄:Eu²⁺,Dy³⁺ and Y₂O₂S:Eu³⁺,Mg²⁺,Ti⁴⁺ ternary luminous fiber

详细信息    查看全文

• 作者：Yang JIN (晋 阳) ; Xiaoyun LONG (龙啸云) ; Yanan ZHU (朱亚楠) ; Mingqiao GE (葛明桥) ; ^{ge_mingqiao@126.com}
• 关键词：luminous fiber ; Sr2ZnSi2O7 ; Eu2+ ; Dy3+ ; SrAl2O4 ; Eu2+ ; Dy3+ ; Y2O2S ; Eu3+ ; Mg2+ ; Ti4+ ; down-conversion ; light sensation ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：34
• 期：12
• 页码：1206-1212
• 全文大小：4061 K
• 卷排序：34

文摘

In this study, down-conversion fluorescent powder of Sr2ZnSi2O7:Eu2+,Dy3+, SrAl2O4:Eu2+,Dy3+ and Y2O2S:Eu3+,Mg2+,Ti4+, which were the common three primary colors materials with long afterglow, were synthesized by high temperature solid state method. The blends of rare earth (RE) luminescent materials have been of interest to reinvest the luminescent characteristics of polyethylene terephtahalate (PET) luminous fiber. The scanning electron microscopy (SEM) and an inversion fluorescence microscope were used to characterize the surface morphology and the dispersion of inclusion. Through analysis of microcosmic morphology, three typical dispersions of luminescent particles were summarized. The X-ray diffraction indicated that the phase structure of fiber samples and crystal structure of luminescence materials kept complete after prilling and spinning. From the fluorescence spectra and CIE 1931 coordinates, it could be found that different combinations of luminous fibers were desired to obtain divers colors emission luminous fiber. And the fiber samples were a light sensation which could induct different excitation wavelengths and convert it down to different colors. The afterglow decay curve and its differential curve were summarized indicating the three decay stages. The decay curve and decay rate curve showed that the contents of Sr2ZnSi2O7:Eu2+,Dy3+, SrAl2O4:Eu2+,Dy3+ and Y2O2S:Eu3+,Mg2+,Ti4+ had obvious influence on the afterglow of fiber samples.