Photoelectric properties of Sr2MgSi2O7: Eu2+ phosphors produced by co-precipitation method
作者： Su-Hua Yang , Hwa-Yu Lee , Po-Chang Tseng , Ming-Hsien Lee
DOI: 10.1016/J.JLUMIN.2020.117787
关键词:
摘要: Abstract Eu2+-doped phosphors Sr2MgSi2O7: xEu2+ (x = 1–5 mol%) with blue color are synthesized by the co-precipitation method. The X-ray diffraction patterns of these indicate a tetragonal crystal structure. emission peak centered at 486 nm is attributed to 4 F7→ 4F65D1 transitions Eu2+ ions CIE coordinates (x = 0.176, y = 0.637). We use 4 mol% find latent fingerprints (LFPs) visible on different surfaces under 337 nm UV light. results that this phosphor may possess potential be used for LFP recognition. Three calculated models mimicking host, ion-doped phosphor, and oxygen vacancy built using CASTEP software perform density functional theory (DFT) calculations. geometry optimization doping ion reveal coordinate covalent bond formed its neighboring atoms. VO causes obvious changes in electron orbitals Si O atoms as well 5d empty orbital ions.
sci-hub.st 参考文章(76)
Stewart J. Clark, Matthew D. Segall, Chris J. Pickard, Phil J. Hasnip, Matt I. J. Probert, Keith Refson, Mike C. Payne, First principles methods using CASTEP Zeitschrift Fur Kristallographie. ,vol. 220, pp. 567- 570 ,(2005) , 10.1524/ZKRI.220.5.567.65075
Ou Hai, Hongyi Jiang, Dong Xu, Ming Li, The effect of grain surface on the long afterglow properties of Sr2MgSi2O7: Eu2+, Dy3+ Materials Research Bulletin. ,vol. 76, pp. 358- 364 ,(2016) , 10.1016/J.MATERRESBULL.2015.12.048
H. Duan, Y.Z. Dong, Y. Huang, Y.H. Hu, X.S. Chen, The important role of oxygen vacancies in Sr 2 MgSi 2 O 7 phosphor Physics Letters A. ,vol. 380, pp. 1056- 1062 ,(2016) , 10.1016/J.PHYSLETA.2016.01.001
W. Kohn, L. J. Sham, Self-Consistent Equations Including Exchange and Correlation Effects Physical Review. ,vol. 140, pp. 1133- 1142 ,(1965) , 10.1103/PHYSREV.140.A1133
Ishwar Prasad Sahu, D.P. Bisen, Nameeta Brahme, Lata Wanjari, Raunak Tamrakar, Luminescence Properties of Sr2MgSi2O7:Eu2+, Ce3+ Phosphor by Solid State Reaction Method Physics Procedia. ,vol. 76, pp. 80- 85 ,(2015) , 10.1016/J.PHPRO.2015.10.015
Haoyi Wu, Yihua Hu, Li Chen, Xiaojuan Wang, Enhancement on the afterglow properties of Sr2MgSi2O7: Eu2+ by Er3+ codoping Materials Letters. ,vol. 65, pp. 2676- 2679 ,(2011) , 10.1016/J.MATLET.2011.05.079
Xiande Yang, Yongqian Wang, Zhengshu Wang, Xiangzhou Lv, Hanxiang Jia, Junhan Kong, Meihua Yu, Preparation of CdS/TiO2 nanotube arrays and the enhanced photocatalytic property Ceramics International. ,vol. 42, pp. 7192- 7202 ,(2016) , 10.1016/J.CERAMINT.2016.01.109
Yongqian Wang, Dagui Wang, Bing Yan, Yan Chen, Caixiong Song, Fabrication of diverse CuO nanostructures via hydrothermal method and their photocatalytic properties Journal of Materials Science: Materials in Electronics. ,vol. 27, pp. 6918- 6924 ,(2016) , 10.1007/S10854-016-4645-8
Yongqian Wang, Qun Ma, Hanxiang Jia, Zhengshu Wang, One-step solution synthesis and formation mechanism of flower-like ZnO and its structural and optical characterization Ceramics International. ,vol. 42, pp. 10751- 10757 ,(2016) , 10.1016/J.CERAMINT.2016.03.200
Joung Kyu Park, Kyoung Jae Choi, Chang Hae Kim, Hee Dong Park, Se Young Choi, Optical properties of Eu2+-activated Sr2SiO4 phosphor for light-emitting diodes Electrochemical and Solid State Letters. ,vol. 7, ,(2004) , 10.1149/1.1652424