Synthesis of Long Afterglow Photoluminescent Materials Sr2MgSi2O7∶Eu2+, Dy3+ by Sol-Gel Method
来源期刊：JOURNAL OF RARE EARTHS2005年第3期
论文作者：Yan Changhao Chen Yongjie QIU Guanming Sun Yanbin XIAO Linjiu Geng Xiujuan
Key words：inorganic nonmetallic materials; sol-gel method; strontium magnesium silicate; long afterglow; photoluminescent materials; rare earths;
Abstract: Long afterglow photoluminescent materials Sr2MgSi2O7 doped with Eu2+, Dy3+ were prepared by sol-gel method. The synthesized samples were characterized by X-ray diffraction. The excitation spectrum, emission spectrum and long decay curve were measured and analyzed. XRD pattern indicates that phosphor is with Sr2MgSi2O7 crystal structure. The wide range of excitation wavelength indicates that luminescent material can be excited by light from ultraviolet ray to visible light. The main peak of emission spectrum is located at 466 nm. Sample excited by visible light can emit bright blue light, and the afterglow time lasts more than 8 h.
Yan Changhao1，Chen Yongjie2，QIU Guanming4，Sun Yanbin3，XIAO Linjiu2，Geng Xiujuan2
(1.College of Materials Science & Technology, Nanjing University of Technology, Nanjing 210009, China;
2.Department of Applied Chemistry, Shenyang Institute of Chemical Technology, Shenyang 110142, China;
3.School of Materials and Metallurgy, Northeastern University, Shenyang 110006, China;
4.School of Materials and Chemical Technology, Changchun University of Science and Technology, Changchun 130022, China)
Abstract:Long afterglow photoluminescent materials Sr2MgSi2O7 doped with Eu2+, Dy3+ were prepared by sol-gel method. The synthesized samples were characterized by X-ray diffraction. The excitation spectrum, emission spectrum and long decay curve were measured and analyzed. XRD pattern indicates that phosphor is with Sr2MgSi2O7 crystal structure. The wide range of excitation wavelength indicates that luminescent material can be excited by light from ultraviolet ray to visible light. The main peak of emission spectrum is located at 466 nm. Sample excited by visible light can emit bright blue light, and the afterglow time lasts more than 8 h.
Key words:inorganic nonmetallic materials; sol-gel method; strontium magnesium silicate; long afterglow; photoluminescent materials; rare earths;
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