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

Abstract Views: 338  |  PDF Views: 101

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