To investigate the chromaticity properties and fluorescence spectroscopy of SrAl2O4∶Eu excited by X-ray,the Sr1-xAl2O4∶xEu crystal powders with various coping concentration were synthesized via a urea assisted solution-combustion method.The crystal powders were characterized by X-ray powder diffraction (XRD) and X-ray excited luminescence spectroscopy.The XRD showed that the synthesized samples exhibited a monoclinic α-SrAl2O4 phase.Under the X-ray excitation,the crystal powders exhibited Eu2+ green fluorescence and Eu3+ red fluorescence emission.The intensity of green fluorescence emission around 527nm increased with increasing europium concentration up to a maximum of x=0.016,then decreased due to concentration quenching effect,while the intensity of red fluorescence around 616 nm increased with increasing europium concentration even x=0.300.The (x,y) chromaticity coordinates of samples with different doping concentration were calculated.The CIE 1931 chromatogram shown that the fluorescence of the sample gradually transited from the blue-green region to the red region through the green region.
Liu Birui, Fu Zhenxing
. Study on preparation,crystal structure and spectrum property of SrAl2O4∶Eu powder sample[J]. New Chemical Materials, 2020
, 48(10)
: 176
-179
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.038
[1] Cao Renping, Zhang Fenxiang, Cao Chunyan, et al.Synthesis and luminescence properties of CaAl2O4∶Mn4+ phosphor[J].Optical Materials, 2014, 38:53-56.
[2] Yang Lei, Meng Qing, Lu Nan, et al.Combustion synthesis and spark plasma sintering of MgAl2O4-graphene composites[J].Ceramics International, 2019, 45(6):7635-7640.
[3] Chen Zhi, Zhu Yanan, Ge Mingqiao.Effect of red emitting fluorescent pigment on fluorescent color of SrAl2O4∶Eu2+, Dy3+ phosphors[J].Journal of Rare Earths, 2017, 35(3):247-253.
[4] Liepina V, Millers D, Smits K, et al.X-ray excited luminescence of SrAl2O4∶Eu, Dy at low temperatures[J].Journal of Physics and Chemistry of Solids, 2018, 115:381-385.
[5] Jamalaiah B C, Jayasimhadri M.Tunable luminescence properties of SrAl2O4∶Eu3+ phosphors for LED applications[J].Journal of Molecular Structure, 2019, 1178(2):394-400.
[6] Fu Zhenxing, Liu Birui.Solution combustion synthesis, photoluminescence and X-ray luminescence of Eu3+-doped LaAlO3 nanophosphors[J].Ceramics International, 2016, 42(2):2357-2363.
[7] Shi Shikao, Yang Yanfei, Guo Panpan, et al.Improved morphology and optimized luminescence of Eu3+-doped La2Ce2O7 composite nanopowders by surfactant-assisted solution combustion synthesis[J].Journal of Luminescence, 2019, 206:91-96.
[8] Liu Xiaolang, Song Zhen, Wang Shuxin, et al.The red persistent luminescence of (Sr, Ca)AlSiN3∶Eu2+ and mechanism different to SrAl2O4∶Eu2+, Dy3+[J].Journal of Luminescence, 2019, 208(4):313-321.
[9] Nazarov M, Mammadova S, Spassky D, et al.SrAl2O4∶Eu2+(1%) luminescence under UV, VUV and electron beam excitation[J].Optical Materials, 2018, 75(1):448-452.
[10] Yang Yanfei, Zuo Xiangyu, Shi Shikao, et al.Hydrothermal combustion synthesis and characterization of Sr2CeO4 phosphor powders[J].Material Research Bullet, 2019, 112:159-164.
[11] Xie W, Quan J, Wu H, et al.Structure and luminescence properties of SrAl2O4∶Eu2+, Dy3+ by Ba3+ and Ca2+ co-doping[J].Journal of Alloy and Compounds, 2012, 514:97-102.
[12] Fu Zhenxing, Zheng Hairong, He Enjie, et al.Enhancement of red emission by co-doping Ln3+ ions in Eu3+∶LaOF nanoparticles[J].Science China Series G, 2013, 56(5):928-932.
