Current Science

Open Access Open Access  Restricted Access Subscription Access

Photoluminescence Properties of Dy3+-Doped LaOF Nanophosphor for white LED Applications


Affiliations
1 Department of Physics, Govt. First Grade College, Tumkur 572 103, India
2 Department of Physics and RC, Vidya Vikas Institute of Engineering and Technology, Mysuru 570 028, India
3 Department of Physics, Govt. First Grade College, Shidlaghatta 562 105, India
4 Department of Physics, Dayanandsagar Academy of Technology and Management, Bengaluru 560 082, India
5 Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, Tumkur 572 103, India
 

The present study involves the synthesis of a series of Dy3+ (1–11 mol%) doped LaOF nanophosphor prepared by solution combustion method using Aloe Veragel as fuel. The samples were characterized by powder X-ray diffraction and scanning electron microscopy.The average crystallite size was estimated fromDebye–Scherer’s and Williamson–Hall plots and the values were found to be in the 25–40 nm range. The effect of Dy3+ ions on luminescence characteristics of LaOF was studied and the results discussed. The CIEdiagram clearly indicated that the entire co-ordinates were well coated in the white region and as a result itwas quite useful for fabrication of white-light-emitting diodes.

Keywords

Lanthanum Oxyfluoride, Nanophosphor, PXRD, SEM, Synthesis.
User
Notifications
Font Size

  • Liu, H. et al., Luminescent properties of R+-doped Sr2SiO4 : Eu3+ (R+ = Li+, Na+ and K+) red-emitting phosphors for white LEDs. J. Lumin., 2011, 131, 2422–2426.

  • Zhang, D., Yan, T., Shi, L., Li, H. and Chiang, J. F., Templatefree synthesis, characterization, growth mechanism and photoluminescence property of Eu(OH)3 and Eu2O3 nanospindles. J. Alloys Compd., 2010, 506, 445–446.

  • He, H. et al., Observation of fluorescence and phosphorescence in Ca2MgSi2O7 : Eu2+, Dy3+ phosphors. J. Electrochem. Soc., 2010, 157, 69.

  • Vijaya Kumar, M. V., Jamalaiah, B. C., Rama Gopal, K. and Reddy, R. R., Optical absorption and fluorescence studies of Dy3+ doped lead telluroborate glasses. J. Lumin., 2012, 132, 86–90.

  • Jia-Li, C., Ruo-ying, L., Chong-jian, Z., Shao-long, T., Xia, W. and Jun-Ying, S., White light emission and energy transfer in Dy3+/Eu3+ co-doped aluminoborate glass. J. Opt. Mater., 2012, 34, 1112–1115.

  • Du, Y. P., Zhang, Y. W., Sun, L. D. and Yan, C. H., Luminescent monodisperse nanocrystals of lanthanide oxyfluorides synthesized from trifluoroacetate precursors in high-boiling solvents. J. Phys. Chem. Compd., 2008, 112, 405–415.

  • Grzyb, T. and Lis, S., Structural and spectroscopic properties of LaOF: Eu3+ nanocrystals prepared by the sol–gel Pechini method. J. Inorg. Chem., 2011, 50, 8112–8120.

  • Shang, M., Geng, D., Kang, X., Yang, D. and Zhang, Y., Hydrothermal derived LaOF: Ln3+ (Ln = Eu, Tb, Sm, Dy, Tm and/or Ho) nanocrystals with multicolor-tunable emission properties. J. Inorg. Chem., 2012, 51, 11106–11116.

  • Shaat, S. K. K., Swart, H. C. and Ntwaeaborwa, O. M., Synthesis and characterization of white light emitting CaxSr1–xAl2O4 : Tb3+, Eu3+ phosphor for solid state lighting. J. Opt. Mater. Exp., 2012, 2, 962–968.

  • Armelao, L. et al., Luminescent properties of Eu-doped lanthanum oxyfluoride sol–gel thin films. J. Phys. Chem. C, 2009, 113, 14429–14434.

  • Patil, K. C., Hegde, M. S., Rattan, T. and Aruna, S. T., Chemistry of Nanocrystalline Oxide Materials, Combustion Synthesis, Properties and Applications, World Scientific, UK, 2000.

  • Ji, Y., Cao, J., Zhu, Z., Li, J., Wang, Y. and Tu, C., Synthesis and white light emission of Dy3+ ions doped hexagonal structure YAlO3 nanocrystalline. J. Lumin., 2012, 132, 702–706.

  • Prashantha, S. C., Lakshminarasappa, B. N. and Singh, F., 100 MeV Si8+ ion induced luminescence and thermoluminescence of nanocrystalline Mg2SiO4 : Eu3+. J. Lumin., 2012, 132, 3093–3097.

  • Mulak, J. and Mulak, M., On a complementary scale of crystalfield strength. J. Phys. A, Math. Theor., 2007, 40, 2063–2076.

  • Girish, K. M. et al., Zn2TiO4 : Eu3+ nanophosphor: self explosive route and its near UV excited photoluminescence properties for WLEDs. Spectrochim. Acta, Part A, 2015, 138, 857–865.

  • Naik, Ramachandra, et al., Mg2SiO4 : Tb3+ nanophosphor: auto ignition route and near UV excited photoluminescence properties for WLEDs. J. Alloys Compd., 2014, 617, 69–75.


Abstract Views: 261

PDF Views: 84




  • Photoluminescence Properties of Dy3+-Doped LaOF Nanophosphor for white LED Applications

Abstract Views: 261  |  PDF Views: 84

Authors

C. Suresh
Department of Physics, Govt. First Grade College, Tumkur 572 103, India
C. Ningappa
Department of Physics and RC, Vidya Vikas Institute of Engineering and Technology, Mysuru 570 028, India
V. M. Nagaveene
Department of Physics and RC, Vidya Vikas Institute of Engineering and Technology, Mysuru 570 028, India
K. Umeshareddy
Department of Physics, Govt. First Grade College, Shidlaghatta 562 105, India
K. M. Girisha
Department of Physics, Dayanandsagar Academy of Technology and Management, Bengaluru 560 082, India
H. Nagabhushana
Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, Tumkur 572 103, India

Abstract


The present study involves the synthesis of a series of Dy3+ (1–11 mol%) doped LaOF nanophosphor prepared by solution combustion method using Aloe Veragel as fuel. The samples were characterized by powder X-ray diffraction and scanning electron microscopy.The average crystallite size was estimated fromDebye–Scherer’s and Williamson–Hall plots and the values were found to be in the 25–40 nm range. The effect of Dy3+ ions on luminescence characteristics of LaOF was studied and the results discussed. The CIEdiagram clearly indicated that the entire co-ordinates were well coated in the white region and as a result itwas quite useful for fabrication of white-light-emitting diodes.

Keywords


Lanthanum Oxyfluoride, Nanophosphor, PXRD, SEM, Synthesis.

References





DOI: https://doi.org/10.18520/cs%2Fv113%2Fi06%2F1139-1141