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科技导报  2015 

LED用黄绿色荧光粉LiZnPO4:Mn2+,Al3+的合成及Al3+敏化发光研究

DOI: 10.3981/j.issn.1000-7857.2015.13.001, PP. 13-16

Keywords: 无机化合物,磷酸盐,荧光粉,发光,光学材料,无机化合物,磷酸盐,荧光粉,发光,光学材料

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Abstract:

为了获得可用于发光二极管(LED)的新型黄绿色荧光粉,用高温固相法合成了Li1-xZn0.9-xPO4Mn0.1,Alx系列的荧光粉.用XRD表征并分析了样品,获悉样品具有LiZnPO4的结构.用荧光发射光谱及激发光谱表征了样品的发光性能,讨论了Al3+掺杂对LiZnPO4Mn,Al荧光粉发光性能的影响.结果表明Al3+掺杂量对激发及发射光强度的影响均为开口向下、有极值的抛物线,Al3+的最佳掺杂量为3%,对应样品是Li0.97Zn0.87PO4Mn0.1,Al0.03;Al3+最佳掺杂量样品的发光强度是未掺Al3+样品的3.98倍,说明在LiZnPO4基质中Al3+对Mn2+的发光具有增敏作用;Al3+的掺入只影响Mn2+的发光强度,不影响Mn2+的发光模式.Li0.97Zn0.87PO4Mn0.1,Al0.03的色坐标值表明,该样品为黄绿色荧光粉,其在紫外线激发LED领域具有潜在的应用前景.

References

[1]  Vasovic D D, Stojakovic D R. Metal phosphate preparation using boron phosphate[J]. Materials Research Bulletin, 1997, 32(6): 779-784.
[2]  Chen J, Natarajan S, Thomas J, et al. A novel openframework cobalt phosphate containing a tetrahedrally coordinated cobalt(II) center: CoPO4 ·0.5C2H10N2[J]. Angewandte Chemie International Edition, 1994, 33(6): 639-640.
[3]  Gier T E, Stucky G D. Low-temperature synthesis of hydrated zinco (beryllo)- phosphate and arsenate molecular sieves[J]. Nature, 1991, 349: 508-510.
[4]  Ng H Y, Harrison W T A. Monoclinic NaZnPO4-ABW, a new modification of the zeolite ABW structure type containing elliptical eight-ring channels[J]. Microporous and Mesoporous Materials, 1998, 23(3- 4): 197-202.
[5]  Harrison W T A, Gier T E, Nicol J M, et al. Tetrahedral-framework lithium zinc phosphate phases: Location of light- atom positions in LiZnPO4·H2O by powder neutron diffraction and structure determination of LiZnPO4 by ab initio methods[J]. Journal of Solid State Chemistry, 1995, 114(1): 249-257.
[6]  Jensen T R. A new polymorph of LiZnPO4 · H2O: synthesis, crystal structure and thermal transformation[J]. Journal of the Chemical Society, Dalton Transactions, 1998, 18(13): 2261-2266.
[7]  Bu X H, Gier T E, Stucky G D. A new polymorph of lithium zinc phosphate with the cristobalite-type framework topology[J]. Journal of Solid State Chemistry, 1998, 138(1): 126-130.
[8]  Bensalem A. Synthesis and characterization of a new layered lithium zinc phosphate hydrate[J]. Journal of Solid State Chemistry, 2001, 162 (1): 29-33.
[9]  Jensen T R, Hazell R G, N?rlund Christensen A, et al. Hydrothermal synthesis of lithium zinc phosphates: Structural investigation of twinned β- Li4Zn(PO4)2 and a high temperature polymorph α - Li4Zn(PO4)2[J]. Journal of Solid State Chemistry, 2002, 166(2): 341-351.
[10]  Chan T S, Liu R S, Baginskiy I. Synthesis, crystal structure, and luminescence properties of a novel green- yellow emitting phosphor LiZn1 - xPO4:Mnx for light emitting diodes[J]. Chemistry of Materials, 2008, 20(4): 1215-1217.
[11]  Chai Q, Chen Z P, Liao S, et al. Preparation of LiZn0.9PO4:Mn0.1 ·H2O via a simple and novel method and its non-isothermal kinetics using iso-conversional calculation procedure[J]. Thermochimica Acta, 2012, 533(1-2): 74-80.
[12]  Zhang S Y, Huang Y L, Seo H J. The spectroscopic properties and structural occupation of Eu3+ sites in LiMgPO4 phosphor[J]. Journal of the Electrochemical Society, 2010, 157(5): 186-190.
[13]  Peng Y M, Su Y K, Yang R Y. The charge transfer transition phenomenon and microstructure of Eu3+-doped NaCaPO4 phosphors sintered with NH4Cl flux via solid-state reaction[J]. Materials Research Bulletin, 2013, 48(5): 1946-1951.
[14]  Liang Z J, Mo F W, Zhang X G, et al. Optical properties and energy transfer of NaCaPO4:Tb3+ , Eu3+ phosphors[J]. Ceramics International, 2014, 40(5): 7501-7506
[15]  Chen L, Zhang Z H, Tong C, et al. Improved photoluminescence of red-emitting NaCaPO4:Eu3+ phosphor by charge compensation[J]. Physical Status Solidi A, 2012, 209(7): 1313-1316.
[16]  Yang R Y, Peng Y M, Su Y K. Novel red- emitting microwaveassisted- sintered LiSrPO4: Eu3+ phosphors for application in near-uv white light-emitting diodes[J]. Journal of Electronic Materials, 2013, 42(10): 2910-2914.
[17]  Zhang S Y, Nakai Y, Tsuboi T, et al. Luminescence and microstructural features of eu-activated LiBaPO4 phosphor [J]. Chemistry of Materials, 2011, 23(5): 1216-1224.
[18]  Zhang S Y, Wei D L, Zhu R, et al. The luminescence and structural characteristics of Eu3+-doped NaBaPO4 phosphor[J]. Ceramics International, 2011, 37(8): 3697-3702.
[19]  Li X, Guan L, Li X N, et al. Luminescent properties of NaBaPO4:Eu3+ red-emitting phosphor for white light-emitting diodes[J]. Powder Technology, 2010, 200(1-2): 12-15.
[20]  Wang Z J, Li P L, Yang Z P, et al. Spectral characteristics of KBaPO4Eu3+red emitting phosphor[J]. Acta Photonica Sinica, 2011, 40 (3): 336-339.
[21]  Shinde K N, Pawade V B, Dhoble S J, et al. Orange emission in Eu3+- activated Mg2M (PO4)2(M=Sr and KNa) and KSrPO4 phosphors[J]. Chemistry Synthesis and Reactivity in Inorganic and Metal- Organic Chemistry, 2011, 41(3-5): 517-524.
[22]  Mu Z F, Hu Y H, Chen L, et al. Enhanced red emission in Sr2CeO4: Eu3+ by charge compensation[J]. Journal of the Electrochemical Society, 2011, 158(10): 287-290.
[23]  Luo H D, Liu J, Zheng X, et al. Enhanced photoluminescence of Sr3SiO5:Ce3+ and tuneable yellow emission of Sr3SiO5:Ce3+, Eu2+ by Al3+ charge compensation for W-LEDs[J]. Journal of Materials Chemistry, 2012, 22(1): 15887-15893.
[24]  Nolan M. Charge compensation and Ce3+ formation in trivalent doping of the CeO2(110) surface: The key role of dopant ionic radius[J]. Journal of Physical Chemistry C, 2011, 115(14): 6671-6681.
[25]  Chan T S, Liu R S, Baginskiy I. Synthesis, crystal structure, and luminescence properties of a novel green- yellow emitting phosphor LiZn1-xMnxPO4:Mnx for light emitting diodes[J]. Chemistry of Materials, 2008, 20(4): 1215-1217.
[26]  Su F, Ma B, Ding K, et al. Luminescence temperature and pressure studies of Zn2SiO4 phosphors doped with Mn2+ and Eu3+ ions[J]. Journal of Luminescence, 2006, 116(1-2) 117-126.

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