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Synthesis and Characterization of europium doped barium magnesium aluminate (BaMgAl 10 O 17 :Eu 2+ ) and lanthanum yttrium phosphate (LaYPO 4 :Eu 2+ ) nanophosphors

D. Haranath, Jyotsna Chauhan, Riya Sahu, Varsha Rani Mehto


Over a decade after adapting the definition and long-term vision for nanotechnology, the programs around the world have achieved remarkable results regarding scientific discoveries that span better understanding of the smallest living structures and functions of matter at the nanoscale. The current scenario of emerging field of luminescent material (phosphor) has a great interest in optoelectronics and solid-state lighting applications for industrial purpose. In the present work, we have reported, aluminate and phosphate based nanophosphors particularly for major applications such as fluorescent lamp and solid-state lighting. These two nanophosphors represent blue and red color emission under the ultraviolet (UV) light excitation source. The synthesis and characterization of europium doped barium magnesium aluminate (BaMgAl10O17:Eu2+) and lanthanum yttrium phosphate (LaYPO4:Eu2+) nanophosphors have been discussed in detail. For the synthesis of BaMgAl10O17:Eu2+ and LaYPO4:Eu2+, we have used auto-combustion and sol-gel techniques respectively, and all the precursor salts have been taken in stoichiometric proportions. The structural, morphological and optical properties of the synthesized nanophosphors have been characterized using X-ray diffraction pattern, scanning electron microscopy (SEM) and photoluminescence measurements, respectively. It has been observed that the auto-combustion and sol-gel processes result nanoparticles with average size ~55 and 22 nm, respectively. SEM observations showed truncated fractal-like morphology of the particles. The photoluminescence studies of BaMgAl10O17:Eu2+ and LaYPO4:Eu2+ nanophosphor under ~300 and 250 nm excitation exhibit dominant emission peaks at 465 and 620 nm respectively. The corresponding energy transition in BaMgAl10O17:Eu2+ at 465 emission peak attributed to 4f65d1→4f7 transition of the europium ion. The energy transition of trapped electrons hasbeen proved by time-resolved photoluminescence spectra which recorded at four milliseconds for both BaMgAl10O17:Eu2+ and LaYPO4:Eu2+ nanophosphors. These results perfectly established the suitability of these nanophosphors in improving the efficiency of fluorescent lamp and nanoelectronics devices.

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Birkel A, Denault KA, George NC, Seshadri R. Advanced Inorganic Materials for Solid State Lighting. Material Matters. 2012; 7(2): 22-27.

Chen L, Lin CC, Yeh CW, Liu RS. Light Converting Inorganic Phosphors for White Light-Emitting Diodes. Materials. 2010; 3(3): 2172-2195.

Yen WM, Weber MJ. Inorganic Phosphors: Compositions, Preparation and Optical Properties (Laser and Optical Science and Technology Series). Boca Raton: The CRC Press; 2004.

Hoppe HA. Recent Developments in the Field of Inorganic Phosphors. Angew. Chem. Int. Ed. 2009; 48(20): 3572-3582.

Hedrick JB. rare earth in selected u.s. defence applications. Bloomington, Indiana: 40th forum on the geology of industrial mine; 2004.

Buzea C, Pacheco I, Robbie K. Nanomaterials and Nanoparticles: Sources and Toxicity. Biointerphases.2007; 2(4):MR17-MR71.

Zeng S, Baillargeat D, Ho HP, Yong, KT. Nanomaterials enhanced surface plasmon resonance for biological and chemical sensing applications. Chemical Society Reviews. 2014; 43 (10): 3426 -3452.

HARVEY EN. A History of Luminescence. Philadelphia: America Philosophical Society; 1957.

Dan M, Gary K, Graydon A. basic physics of the incandescent lamp (Lightbulb). The Physics Teacher. 1999; 37(9): 520-525.

Vij DR. Luminescence of Solids. New York: Plenum Press; 1998.

Coon JB, DeWames RE, Loyd CM. The Franck-Condon principle and the structures of excited electronic states of molecules. Journal of Molecular Spectroscopy. 1962; 8(1-6): 285-299.

Parker CA. in photoluminescence of solution. Amsterdam: Elsevier Publication; 1968.

Williams RT, Bridges JW. Fluorescence of solutions: A review. J. Clin. Path. 1964; 17(4): 371-394.

Rohatgi-Mukherjee KK. Fundamentals of photochemistry.3rd edition. Calcutta: New Age International (P) Limited Publishers; 1988.

Kasha M. Phosphorescence and the Role of the Triplet State in the Electronic Excitation of Complex Molecules. Chem Rev. 1947; 41(2): 401–419.

McNaught AD, Wilkinson A. IUPAC recommendations Compendium of chemical terminology. 2nd edition (the “Gold Book”). Oxford (United Kingdom): Blackwell Science; 1997.

Justel T, Nikol H, Ronda C. New developments in the field of luminescent materials for lighting and displays. Angew. Chem. Int. Ed. 1998; 37(22): 3084-3103.

Ronda CR. Recent achievements in research on phosphors for lamps and displays. J. Lumin. 1997; 72-74: 49-54.

Oshio S, Matsuoka T, Tanaka S, Kobayashi H. Mechanism of Particle Growth of a BaMgAl10O17:Eu2+ Phosphor by Firing with AlF3. J. Electrochem. Soc.1998; 145(11): 3898-3903.

Ronda CR. Phosphors for lamps and displays: an applicational view. J. Alloys Compd.1995; 225(1): 234-238.

Liu Y, Shi C. Luminescent Centers of Eu2+ in BaMgAl10O17 Phosphor. Mater. Res. Bull. 2001; 36(1-2): 109-115.

Yang P., Yao G., Lin J. Photoluminescence and combustion synthesis of CaMoO4 doped with Pb2+. Inorg. Chem. Commun. 2004; 7(3): 389-391.

Shikao S, Jiye W. Combustion synthesis of Eu3+ activated Y3Al5O12 phosphor nanoparticles. J. Alloys Compd. 2001; 327(1-2): 82-86.

Gu F, Wang SF, Lu MK, Zou WG, Zhou GJ, Xu D, Yuan DR. Combustion synthesis and luminescence properties of Dy3+-doped MgO nanocrystals. J. Cryst. Growth. 2004; 260(3-4): 507-510.

Hu J, Odom TW, Lieber CM. Chemistry and Physics in One Dimension: Synthesis and Properties of Nanowires and Nanotubes. Acc. Chem. Res. 1999; 32(5): 435-445.

Kovtyukhova NI, Mallouk TE. Nanowires as Building Blocks for Self-Assembling Logic and Memory Circuits. Chem. Eur. J. 2002; 8(19): 4354-4363.

Hirai T., Hirano T, Komasawa I. Preparation of Gd2O3: Eu3+ and Gd2O2S: Eu3+ Phosphor Fine Particles Using an Emulsion Liquid Membrane System. J.Colloid Interface Sci. 2002; 253(1): 62-69.


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