naa a22 4500 510816576 CHVBK 20180411083510.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11468-013-9498-x doi (NATIONALLICENCE)springer-10.1007/s11468-013-9498-x One-Step Preparation and Fluorescence Enhancement Effect in SiO2/Eu2+ Doped with Ag Nanowires [Elektronische Daten] [Dekai Zhang, Xiaoyun Hu, Enzhou Liu, Ruonan Ji, Suchang Zhan, Guangyin Jing, Jun Fan, Xun Hou] Eu2+ single-doped SiO2 (SiO2/Eu2+) and Eu2+, Ag nanowires co-doped SiO2 (SiO2/Eu2+-Ag) luminescent nanomaterials were prepared by an efficient one-step sol-gel method. Their microstructure and optical properties were characterized, and the fluorescence enhancement of Eu2+ by Ag nanowires was investigated. The experimental results indicate that the average diameter of Ag nanowires doped is 12.5nm, and the length-diameter ratio is 30. The Ag nanowires cannot only enhance the light absorption of SiO2/Eu2+ in the range of 230-350nm, but also reduce the fluorescence lifetime of Eu2+. More importantly, the emission intensity is enhanced after doping Ag nanowires, and the red shift phenomenon of the emission spectrum is observed, red shift occurs between 10 and 56nm. The highest fluorescence intensity is accessed under the Ag doping concentration of 0.10%. Additionally, the emission of SiO2/Eu2+ with 0.10% of Ag doping at 456nm is 16 times stronger than that of pure SiO2/Eu2+. The present results indicate that the fluorescence enhancement is attributed to the local field enhancement and the increased radiative decay rates induced by Ag nanowires. Springer Science+Business Media New York, 2013 Rare earth doping nationallicence Localized surface plasmon resonance nationallicence Radiative decay rates nationallicence Luminescence nationallicence Ag nanowires nationallicence Zhang Dekai Department of Physics, Northwest University, 710069, Xi'an, China aut Hu Xiaoyun Department of Physics, Northwest University, 710069, Xi'an, China aut Liu Enzhou School of Chemical Engineering, Northwest University, 710069, Xi'an, China aut Ji Ruonan Department of Physics, Northwest University, 710069, Xi'an, China aut Zhan Suchang Department of Physics, Northwest University, 710069, Xi'an, China aut Jing Guangyin Department of Physics, Northwest University, 710069, Xi'an, China aut Fan Jun School of Chemical Engineering, Northwest University, 710069, Xi'an, China aut Hou Xun Department of Physics, Northwest University, 710069, Xi'an, China aut Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 969-974 1557-1955 8:2<969 2013 8 11468 https://doi.org/10.1007/s11468-013-9498-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-013-9498-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Dekai Department of Physics, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Hu Xiaoyun Department of Physics, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Liu Enzhou School of Chemical Engineering, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Ji Ruonan Department of Physics, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Zhan Suchang Department of Physics, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Jing Guangyin Department of Physics, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Fan Jun School of Chemical Engineering, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Hou Xun Department of Physics, Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 969-974 1557-1955 8:2<969 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer