Luminescence Mechanism and Thermal Stabilities of a White Silicate Phosphor for Multifunctional Applications
作者： Qisheng Sun , Xuemin Li , Yide Du , Bo Zhao , Hua Li
DOI: 10.1111/JACE.14480
关键词: Chromaticity 、 Optics 、 Ion 、 Phosphor 、 Diode 、 Analytical chemistry 、 Luminescence 、 Doping 、 Materials science 、 Crystal 、 Ultraviolet
摘要: A series of Dy3+-doped Sr2(1-y)Ca2yY8(SiO4)(6)O-2 (0 y 1) white phosphors were synthesized by the solid-state reaction. All samples crystallize into a hexagonal crystal system with space group P6(3)/m (176) determination XRD Rietveld refinements. With change in Ca/Sr ratio, environment active ions is lightly affected. Upon excitation UV/VUV/cathode ray sources, present an efficient light emission significant differences blue/yellow ratio Dy3+ characteristic transitions. Based on luminescence properties, decay times and thermal interesting phenomenon energy increasing from UV to electron beam can be reasonably explained potential mechanism we proposed. introduction Bi3+, intensity rapidly enhanced optimal reaches 3.75 compared single doped sample. To evaluate applicability this phosphor, packaged two light-emitting diode devices measured actual efficacies CIE chromaticity coordinates. These results indicate that silicate have for multifunctional application ultraviolet-based diodes, mercury-free lamps, field-emission displays.
sci-hub.se 参考文章(42)
F.-L. Zhang, S. Yang, C. Stoffers, J. Penczek, P. N. Yocom, D. Zaremba, B. K. Wagner, C. J. Summers, Low voltage cathodoluminescence properties of blue emitting SrGa2S4:Ce3+ and ZnS:Ag,Cl phosphors Applied Physics Letters. ,vol. 72, pp. 2226- 2228 ,(1998) , 10.1063/1.121266
Xiumei HAN, Jun LIN, Zhe LI, Xiwei QI, Mingya LI, Xiaoqiang WANG, Photoluminescent properties of Ca2Gd8(SiO4)6O2: Dy3+ phosphor films prepared by sol-gel process Journal of Rare Earths. ,vol. 26, pp. 904- 906 ,(2008) , 10.1016/S1002-0721(09)60030-2
Yiqiang Shen, Alfred Tok, Zhili Dong, Synthesis and Crystal Structure Characterization of Silicate Apatite Sr2Y8(SiO4)6O2 Journal of the American Ceramic Society. ,vol. 93, pp. 1176- 1182 ,(2010) , 10.1111/J.1551-2916.2009.03563.X
Yuhua Wang, Yan Wen, Feng Zhang, Novel Dy3+-doped Ca2Gd8(SiO4)6O2 white light phosphors for Hg-free lamps application Materials Research Bulletin. ,vol. 45, pp. 1614- 1617 ,(2010) , 10.1016/J.MATERRESBULL.2010.07.013
W. H. Fonger, C. W. Struck, Eu+35D Resonance Quenching to the Charge‐Transfer States in Y2O2S, La2O2S, and LaOCl The Journal of Chemical Physics. ,vol. 52, pp. 6364- 6372 ,(1970) , 10.1063/1.1672952
Guogang Li, Ying Tian, Yun Zhao, Jun Lin, Recent progress in luminescence tuning of Ce3+ and Eu2+-activated phosphors for pc-WLEDs Chemical Society Reviews. ,vol. 44, pp. 8688- 8713 ,(2015) , 10.1039/C4CS00446A
P. Dorenbos, The 4fn↔4fn − 15d transitions of the trivalent lanthanides in halogenides and chalcogenides Journal of Luminescence. ,vol. 91, pp. 91- 106 ,(2000) , 10.1016/S0022-2313(00)00197-6
G. Wakefield, E. Holland, P. J. Dobson, J. L. Hutchison, Luminescence Properties of Nanocrystalline Y2O3:Eu Advanced Materials. ,vol. 13, pp. 1557- 1560 ,(2001) , 10.1002/1521-4095(200110)13:20<1557::AID-ADMA1557>3.0.CO;2-W
Zhijun Wang, Panlai Li, Qinglin Guo, Zhiping Yang, A single-phased warm white-light-emitting phosphor BaMg2(PO4)2:Eu2+, Mn2+, Tb3+ for white light emitting diodes Materials Research Bulletin. ,vol. 52, pp. 30- 36 ,(2014) , 10.1016/J.MATERRESBULL.2014.01.005
Yun-Chen Wu, De-Yin Wang, Teng-Ming Chen, Chi-Shen Lee, Kuo-Ju Chen, Hao-chung Kuo, A Novel Tunable Green- to Yellow-Emitting β-YFS:Ce3+ Phosphor for Solid-State Lighting ACS Applied Materials & Interfaces. ,vol. 3, pp. 3195- 3199 ,(2011) , 10.1021/AM2006965