a (School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China)
b (School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China)
Effect of Alkali Metal Ions (Li+, Na+ and K+) on the Luminescent Properties of ZnTiO3:Eu3+ Phosphors
a (School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China)
b (School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China)
A series of red emitting ZnTiO3 phosphors co-doped with Eu3+ and alkali metal ions (Li+, Na+ and K+) was prepared by sol-gel method. The crystal structure of the phosphors was investigated by using X-ray diffraction (XRD) and transmission electron microscopy (TEM) after annealing at 700 ℃. The results show that the crystal structure belongs to the hexagonal phase of ZnTiO3 with space group R-3:R. The influence of site occupancy of different alkali metal ions on the emission of ZnTiO3:Eu3+ phosphors was investigated in detail. The emission intensity was significantly enhanced by introducing alkali metal ions. In contrast to Eu3+ singly doped ZnTiO3, the red emission intensities of ZnTiO3:Eu3+ with 4 mol% alkali metal ions (Li+, Na+, K+) were enhanced by about 2.1, 1.7 and 1.4 times, respectively. In addition, the Commission Internationale Ed I'eclairage (CIE) chromaticity coordinates of ZnTiO3:Eu3+, Li+ (0.672, 0.328) are quite similar to the National Television Standard Committee (NTSC) standard values for the red (0.670, 0.380).
Supported by Department of Social Development Project of Jiangsu Province (BE2015659), Science and Technology Project of Anhui Province (1604a0802122) and Collaborative Innovation Center Project in Jiangsu Province (GX2015302)
赵景川;焦宝祥;刘银;田浩;胡聪. 碱金属离子(Li+, Na+和K+)掺杂对ZnTiO3: Eu3+荧光粉发光性能的影响[J]. 结构化学, 2017, 36(8): 1291-1298.
ZHAO Jing-Chuan;JIAO Bao-Xiang;LIU Yin;TIAN Hao;HU Cong. Effect of Alkali Metal Ions (Li+, Na+ and K+) on the Luminescent Properties of ZnTiO3:Eu3+ Phosphors. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2017, 36(8): 1291-1298.
REFERENCES
(1)Pimputkar, S.; Speck, J. S.; DenBaars, S. P.; Nakamura, S. Prospects for LED lighting. Nat. Photonics 2009, 3, 180–182.
(2) Ogi, T.; Nandiyanto, A. B. D.; Wang, W. N.; Iskandar, F.; Okuyama, K. Direct synthesis of spherical YAG:Ce phosphor from precursor solution containing polymer and urea. Chem. Eng. J. 2012, 210, 461–466.
(3) Zhang, X. G.; Zhou, L. Y.; Gong, M. L. High-brightness Eu3+-doped Ca3(PO4)2 red phosphor for NUV light-emitting diodes application. Opt. Mater. 2013, 35, 993–997.
(4) Haque, M. M.; Lee, H. I.; Kim, D. K. Luminescent properties of Eu3+ activated molybdate-based novel red-emitting phosphors for LEDs. J. Alloy. Compd. 2009, 481, 792–796.
(5) Chen, Y. B.; Cheah, K. W.; Gong, M. L. Low temperature quenching and high efficiency Tm3+, La3+ or Tb3+ co-doped CaSc2O4:Ce3+ phosphors for light-emitting diodes. J. Lumin. 2011, 131, 1770–1775.
(6) Yang, H. M.; Shi, J. X.; Gong, M. L. A new luminescent material, Sr2SnO4:Eu3+. J. Alloy. Compd. 2006, 415, 213–215.
(7) Herrmann, A.; Simon, A.; Rüssel, C. Preparation and luminescence properties of Eu2+-doped BaSi2O5 glass-ceramics. J. Lumin. 2012, 132, 215–219.
(8) Yuan, T. S.; Zhou, H. T.; Zou, Y. Q. Synthesis and luminescent properties of novel nanometer-sized ScAlMgO4:Eu3+ phosphors for PDP. Chin. J. Struc. Chem. 2010, 29, 919–925.
(9) Zadlo, M.; Sroka, B. S.; Zur, L.; Czoik, R.; Pisarski, W. A. Emission of Eu3+ in sol-gel oxyfluoride glass materials obtained by different preparation methods. J. Rare. Earth 2014, 32, 269–272.
(10) Song, H. J.; Zhou, L. Q.; Huang, Y.; Li, L.; Wang, T.; Yang, L. Synthesis, characterization and luminescent properties of La2Zr2O7:Eu3+ nanorods. Chin. J. Struc. Chem. 2013, 26, 83–87.
(11) Fu, J.; Zhang, Q.; Li, Y.; Wang, H. Highly luminescent red light phosphor CaTiO3:Eu3+ under near-ultraviolet excitation. J. Lumin. 2010, 130, 231–235.
(12) Ye, S.; Xiao, F.; Pan, Y. X.; Ma, Y. Y.; Zhang, Q. Y. Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties. Mater. Sci. Eng., R 2010, 71, 1–34.
(13) Wang, S. F.; Lv, M. K.; Gu, F.; Song, C. F.; Xu, D.; Yuan, D. R.; Zhou, G. J.; Qi, Y. X. Photoluminescence characteristics of Pb2+ ion in sol-gel derived ZnTiO3 nanocrystals. Inor. Chem. Commu. 2003, 6, 185–188.
(14) Wang, S. F.; Gu, F.; Lv, M. K.; Song, C. F.; Xu, D.; Yuan, D. R.; Liu, S. W. Photoluminescence of sol-gel derived ZnTiO3:Ni2+ nanocrystals. Chem. Phy. Lett. 2003, 373, 223–227.
(15) Li, M. T.; Jiao, B. X. Synthesis and photoluminescence properties of ZnTiO3:Eu3+ red phosphors via sol-gel method. J. Rare Earth 2015, 33, 231–238.
(16) Yao, S. S.; Xue, L. H.; Yan, Y. W. Concentration quenching of Eu2+ in Ba2Mg(BO3)2: Eu2+ phosphor. Curr. App. Phys. 2011, 11, 639–642.
(17) Balasanthiran, C.; Zhao, B.; Lin, C. K.; May, P. S.; Berry, M. T.; Hoefelmeyer, J. D. Self-limiting adsorption of Eu3+ on the surface of rod-shape anatase TiO2 nanocrystals and post-synthetic sensitization of the europium-based emission. J. Colloid. Interf. Sci. 2015, 459, 63–69.
(18) Wang, Z.; Lou, S.; Li, P. Improvement of the red emitting phosphor by introducing A+ (A = Li, Na, K) into Sr3La(PO4)3:Eu3. J. Alloy. Compd. 2016, 813–817.
(19) Huang, J.; Xu, J.; Luo, H.; Yu, X.; Li, Y. Effect of alkali-metal ions on the local structure and luminescence for double tungstate compounds AEu(WO4)2 (A = Li, Na, K). Inorg. Chem. 2011, 50, 11487–11492.
(20) Liang, H. B.; Zhang, G. B.; Dorenbos, P. Luminescence of Ce3+ and Pr3+ doped Sr2Mg(BO3)2 under VUV-UV and X-ray excitation. J. Lumin. 2011, 131, 194–198.
(21) Yi, S. S.; Bae, J. S.; Shim, K. S.; Jeong, J. H.; Park, J. C.; Holloway, P. H. Enhanced luminescence of Gd2O3:Eu3+ thin-film phosphors by Li doping. Appl. Phys. Lett. 2004, 84, 353–355.
(22) Yang, D.; Li, G.; Kang, X.; Cheng, Z.; Ma, P. Room temperature synthesis of hydrophilic Ln3+-doped KGdF4 (Ln = Ce, Eu, Tb, Dy) nanoparticles with controllable size: energy transfer, size-dependent and color-tunable luminescence properties. Nanoscale 2012, 4, 3450–3459.
(23) Liu, X.; Han, K.; Gu, M.; Xiao, L. H.; Ni, C.; Huang, S. M.; Liu, B. Effect of codopants on enhanced luminescence of GdTaO4:Eu3+ phosphors. Solid State Commun. 2007, 142, 680–684.
(24) Wang, Z.; Li, P.; Yang, Z.; Yang, Z.; Guo, Q. A novel red phosphor BaZn2(PO4)2:Sm3+, R+ (R = Li, Na, K). J. Lumin. 2012, 132, 1944–1948.
(25) Kominami, H.; Tanaka, M.; Hara, K.; Hara, K.; Nakanishi, Y.; Hatanaka, Y. Synthesis and luminescence properties of Mg-Ti-O:Eu red-emitting phosphors. Phys. Status Solidi (c) 2006, 3, 2758–2761.
(26) Mu, Z.; Hu, Y.; Chen, L.; Wang, X. Enhanced red emission in ZnB2O4:Eu3+ by charge compensation. Opt. Mater. 2011, 34, 89–94.
(27) Lin, C. K.; Kong, D. Y.; Liu, X. M.; Wang, H.; Yu, M.; Lin, J. Monodisperse and core-shell-structured SiO2@YBO3:Eu3+ spherical particles: synthesis and characterization. Inorg. Chem. 2007, 46, 2674–2681.
(28) Jia, P. Y.; Liu, X. M.; Yu, M.; Luo, Y.; Fang, J.; Lin, J. Luminescence properties of sol-gel derived spherical SiO2@Gd2(WO4)3: Eu3+ particles with core-shell structure. Chem. Phys. Lett. 2006, 424, 358–363.
(29) Li, L. L.; Liu, L.; Zi, W. W.; Yu, H.; Gan, S. C.; Ji, G. J. Synthesis and luminescent properties of high brightness MLa(WO4)2:Eu3+ (M = Li, Na, K) and NaRE(WO4)2:Eu3+ (RE = Gd, Y, Lu) red phosphors. J. Lumin. 2013, 143, 14–20.
(30) Yang, M. Z.; Sui, Y.; Wang, S. P.; Wang, X. N.; Sheng, Y. Q.; Zhang, Z. G.; Lu, T. Q.; Liu, W. F. Enhancement of upconversion emission in Y3Al5O12:Er3+ induced by Li+ doping at interstitial sites. Chem. Phys. Lett. 2010, 492, 40–43.
2017, Vol. 36 
