Crystallization and Luminescence Properties of Sm3+-Doped SrO-Al2O3-SiO2 Glass-Ceramics
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2017年第5期
论文作者：李宏 LIU Liwang TANG Xiaozhe WANG Qian Paul W Wang 王伟
文章页码：1025 - 1031
摘 要：The Sm3+-doped SrO-Al2O3-SiO2（SAS） glass-ceramics with excellent luminescence properties were prepared by batch melting and heat treatment. The crystallization behavior and luminescent properties of the glass-ceramics were investigated by DTA, XRD, SEM and luminescence spectroscopy. The results indicate that the crystal phase precipitated in this system is monocelsian（SrAl2Si2O8） and with the increase of nucleation/crystallization temperature, the crystallite increases from 66 % to 79 %. The Sm3+-doped SAS glass-ceramics emit green, orange and red lights centered at 565, 605, 650 and 715 nm under the excitation of 475 nm blue light which can be assigned to the 4 G5/2→6 Hj/2（j=5, 7, 9, 11） transitions ofSm3+, respectively. Besides, by increasing the crystallization temperature or the concentration ofSm3+, the emission lights of the samples located at 565, 605 and 650 nm are intensified significantly. The present results demonstrate that theSm3+-doped SAS glassceramics are promising luminescence materials for white LED devices by fine controlling and combining of these three green, orange and red lights in appropriate proportion.
李宏1，LIU Liwang1，TANG Xiaozhe1，WANG Qian1，Paul W Wang2，王伟3,4,5
1. State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology)2. Department of Physics, Bradley University3. School of Automotive Engineering, Wuhan University of Technology4. Hubei Province Key Laboratory of Modern Automotive Technology
摘 要：The Sm3+-doped SrO-Al2O3-SiO2（SAS） glass-ceramics with excellent luminescence properties were prepared by batch melting and heat treatment. The crystallization behavior and luminescent properties of the glass-ceramics were investigated by DTA, XRD, SEM and luminescence spectroscopy. The results indicate that the crystal phase precipitated in this system is monocelsian（SrAl2Si2O8） and with the increase of nucleation/crystallization temperature, the crystallite increases from 66 % to 79 %. The Sm3+-doped SAS glass-ceramics emit green, orange and red lights centered at 565, 605, 650 and 715 nm under the excitation of 475 nm blue light which can be assigned to the 4 G5/2→6 Hj/2（j=5, 7, 9, 11） transitions ofSm3+, respectively. Besides, by increasing the crystallization temperature or the concentration ofSm3+, the emission lights of the samples located at 565, 605 and 650 nm are intensified significantly. The present results demonstrate that theSm3+-doped SAS glassceramics are promising luminescence materials for white LED devices by fine controlling and combining of these three green, orange and red lights in appropriate proportion.
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