Luminescence Properties and Thermal Stability of Blue Light Emitting Phosphors Ba3P4O13:Eu2+
ZHANG Xin1, ZHAO Weiren2, ZHOU Yiyang2, LU Chongrui2, LIAO Zifeng2
1 Art and Design College, Guangdong University of Technology, Guangzhou 510006;
2 School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006;
Abstract: An ultraviolet excited blue-light emitting phosphor α-Ba3P4O13:Eu2+ has been synthesized through a solid state reaction method at a relatively low temperature of 840 ℃. The phase purity, luminescence properties and thermal stability of the phosphors have been investigated. Under the excitation of 360 nm ultraviolet light, intense blue emission could be observed and the emission spectrum of α-Ba3P4O13:Eu2+ consisted of a broad and asymmetric emission band centered at ~439 nm. Based on the analysis of the excitation and emission spectra, luminescence decay curves and crystal structure, the broad and asymmetric band could be ascribed to that Eu2+ ions occupy multiple different Ba2+ sites in α-Ba3P4O13. Moreover, the optimal Eu2+ concentration was about 6 mol%, and the dominant concentration quenching mechanism of Eu2+ was the dipole-dipole interaction in this case. Interestingly, α-Ba3P4O13:Eu2+ showed better thermal stability than that of commercial green phosphor (Ba, Sr)2SiO4:Eu2+. The results suggested that α-Ba3P4O13:Eu2+ blue phosphor could find potential application in ultraviolet excited WLEDs.
1 Li X F, Budai J D, Liu F, et al. New yellow Ba0.93Eu0.07Al2O4 phosphor for warm-white light-emitting diodes through single-emitting-center conversion[J].Light:Science and Applications,2013,2(1):e50. 2 Kuo T W, Liu W R, Chen T M. High color rendering white light-emitting-diode illuminator using the red-emitting Eu2+-activated CaZnOS phosphors excited by blue LED[J].Optics express,2010,18(8):8187. 3 Yang H, Zhu G, Yuan L, et al. Characterization and luminescence properties of YAG:Ce3+ phosphors by molten salt synthesis[J].Journal of the American Ceramic Society,2012,95(1):49. 4 Kuo T W, Liu W R, Chen T M. Emission color variation of (Ba, Sr)3BP3O12:Eu2+ phosphors for white light LEDs[J].Optics Express,2010,18(3):1888. 5 Liu W R, Chiu Y C, Yeh Y T, et al. Luminescence and energy transfer mechanism in Ca10K(PO4)7:Eu2+, Mn2+ phosphor[J].Journal of the Electrochemical Society,2009,156(7):J165. 6 Song X, Fu R, Agathopoulos S, et al. Luminescence and energy transfer of Mn2+ co-doped SrSi2O2N2:Eu2+ green-emitting phosphors[J].Materials Science and Engineering:B,2009,164(1):12. 7 Ren F Q, Chen D H. Photoluminescence and structural characteristics of a new orange phosphor: Ca2.6Sr 2.4(PO4)3Cl:Eu3+[J].Applied Physics B:Lasers and Optics,2010,98(1):159. 8 Wang Z, Liang H, Wang J, et al. Red-light-emitting diodes fabricated by near-ultraviolet InGaN chips with molybdate phosphors[J].Applied Physics Letters,2006,89(7):071921. 9 Oshio S, Matsuoka T, Tanaka S, et al. Mechanism of particle growth of a BaMgAl10O17:Eu2+ phosphor by firing with AlF3[J].Journal of the Electrochemical Society,1998,145(11):3898. 10 Xie R J, Hirosaki N. Silicon-based oxynitride and nitride phosphors for white LEDs—A review[J].Science and Technology of Advanced Materials,2007,8(7):588. 11 Wu Z C, Liu J, Hou W G, et al. A new single-host white-light-emitting BaSrMg(PO4)2:Eu2+ phosphor for white-light-emitting diodes[J].Journal of Alloys and Compounds,2010,498(2):139. 12 Wan C, Meng J, Zhang F, et al. An efficient blue-emitting phosphor: For white LEDs[J].Solid State Communications,2010,150(31):1493. 13 Qin C, Huang Y, Shi L, et al. Thermal stability of luminescence of NaCaPO4:Eu2+ phosphor for white-light-emitting diodes[J].Journal of Physics D:Applied Physics,2009,42(18):185105. 14 Langguth R P, Osterheld R K, Karl-Kroupa E. Verification by chromatography of the thermal formation of barium and lead tetra-polyphosphates[J].The Journal of Physical Chemistry,1956,60(9):1335. 15 Lagos C C. Luminescence of divalent europium in the BaO-MgO-P2O5 system[J].Journal of the Electrochemical Society,1968,115(12):1271. 16 Millet J M, Parker H S, Roth R S. Syntheses and unit-cell determination of Ba3V4O13 and low-and high-temperature Ba3P4O13[J].Journal of the American Ceramic Society,1986,69(5):103. 17 Bennazha J, Boukhari A, Holt E M. Barium tetraphosphate[J].Acta Crystallographica Section C:Crystal Structure Communications,2002,C58:i29.
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2018, Vol. 32 
