The aim of the present work was to investigate the luminescent properties of europium-doped lanthanum aluminate (LaAlO3) powder prepared by Modified Pechini (MP) method. Samples were prepared at different Eu3+ concentrations and calcined at 1600°C. Structural and morphology characterizations were obtained by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscope (TEM). Luminescent properties were analyzed by photoluminescence (PL) and thermoluminescent phenomena. The XRD pattern shows pure lanthanum aluminate oxide LaAlO3 with a rhombohedral structure. Photoluminescence studies of the powders was related to 4f → 4f(5D0 → 7Fi) (i = 1, 2, 3, 4) transitions of Eu3+ ion, the most intense emission of Eu3+ in LaAlO3 was registered for the transition 5D0 → 7F1, for 5% of Eu3+. The recorded TL glow curves of excited samples showed a main TL peak, the main peak appeared its maximum as a function of excitation energy. The investigation demonstrates that polycrystalline LaAlO3:Eu3+ powders calcined at 1600°C have interesting luminescent characteristics.
References
[1]
Dexter, D.L. (1953) A Theory of Sensitized Luminescence in Solids. Journal of Chemistry and Physics, 21, 836-850. https://doi.org/10.1063/1.1699044
[2]
DeLuca, J.A. (1980) An Introduction to Luminescence in Inorganic Solids. Journal of Chemical in Education, 57, 541-545. https://doi.org/10.1021/ed057p541
[3]
Jonscher, A.K. and de Polignac, A. (1984) The Time Dependence of Luminescence in Solids. Journal of Physics C: Solid State Physics, 17, 6493-6520.
https://doi.org/10.1088/0022-3719/17/35/018
[4]
Phaomei, G., Singh, W.R., Singh, N.S. and Ningthoujam, R.S. (2013) Luminescence Properties of Ce3+ Co-Activated LaPO4:Dy3+ Nanorods Prepared in Different Solvents and Tunable Blue to White Light Emission from Eu3+ Co-Activated LaPO4:Dy3+, Ce3+. Journal of Luminescence, 134, 649-656.
[5]
Gheorghe, C., Lupei, A., Voicu, F.M. and Tiseanu, C. (2014) Emission Properties and Site Occupation of Sm3+ Ion Doped Lu2O3 Translucent Ceramics. Journal of Alloys and Compounds, 588, 388-393.
[6]
Li, Y.-C., Chang, Y.-H., Lin, Y.-F., et al. (2007) Synthesis and Luminescent Properties of Ln3+ (Eu3+, Sm3+, Dy3+)-Doped Lanthanum Aluminum Germanate LaAlGe2O7 Phosphors. Journal of Alloys and Compounds, 439, 367-375.
[7]
Shinde, K.N., Dhoble, S.J. and Kumar, A. (2011) Combustion synthesis of Ce3+, Eu3+ and Dy3+ Activated NaCaPO4 Phosphors. Journal of Rare Earths, 29, 527-535.
[8]
Navarro, E., Rodríguez, G., Guzmán-Mendoza, J., García-Hipólito, M. and Falcony, C. (2013) Photoluminescence Response of HfO2:Eu3+ Obtained by Hydrothermal Route. Open Journal of Synthesis Theory and Applications, 2, 73-77.
https://doi.org/10.4236/ojsta.2013.22009
[9]
Huang, J., Zhou, L., Pang, Q., Gong, F., Sun, J. and Wang, W. (2009) Photoluminescence Properties of a Novel Phosphor CaB2O4:Eu3+ under UV Excitation. Luminescence, 24, 363-366. https://doi.org/10.1002/bio.1116
[10]
Jin, C., Ma, H., Liu, Q., Li, X. and Liu, P. (2014) Photoluminescence Properties of the High-Brightness Eu(3+)-Doped KNaCa2(PO4)2 Phosphors. Spectrochimica Acta A Molecular Biomolecular Spectroscopy, 25, 767-771.
[11]
Chawla, S., Kumar, N. and Chander, H. (2009) Broad Yellow Orange Emission from SrAl2O4:Pr3+ Phosphor with Blue Excitation for Application to White LEDs. Journal of Luminescence, 129, 114-118.
[12]
Van den Eeckhout, K., Smet, P.F. and Poelman, D. (2010) Persistent Luminescence in Eu2+-Doped Compounds: A Review. Materials, 3, 2536-2566.
https://doi.org/10.3390/ma3042536
[13]
Van den Eeckhout, K., Poelman, D. and Smet, P.F. (2013) Persistent Luminescence in Non-Eu2+-Doped Compounds: A Review. Materials, 6, 2789-2818.
https://doi.org/10.3390/ma6072789
[14]
Zhao, L.S., Liu, J., Wu, Z.C. and Kuang, S.P. (2012) Optimized Photoluminescence of SrB2O4:Eu3+ Red-Emitting Phosphor by Charge Compensation. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 87, 228-231.
[15]
Rivera, T., Furetta, C., Azorín, J., Barrera, M. and Soto, A.M. (2007) Thermoluminescence (TL) of Europium-Doped ZrO2 Obtained by Sol-Gel Method. Radiation Effects and Defect in Solids, 162, 379-383.
https://doi.org/10.1080/10420150601135282
[16]
Gluchowski, P., Strek, W., Lastusaari, M. and Holsa, J. (2015) Optically Stimulated Persistent Luminescence of Europium-Doped LaAlO3 Nanocrystals. Physics Chemistry Chemical Physics, 17, 17246-17252. https://doi.org/10.1039/C5CP00234F
[17]
Dhari, A., Horchani-Nifer, K., Benedetti, A., Enrichi, F. and Ferid, M. (2012) Combustion Synthesis and Photoluminescence of Eu3+ Doped LaAlO3 Nanophosphors. Optical Materials, 34, 1742-1746.
[18]
Kaur, J., Singh, D., Dubey, V., Suryarana, N.S., Paraniha, Y. and Jha, P. (2014) Review of the Synthesis, Characterization, and Properties of LaAlO3 Phosphors. Research on Chemical Intermediates, 40, 2737-2771.
https://doi.org/10.1007/s11164-013-1126-z
[19]
Chen, B., Yu, J. and Liang, X. (2011) LaAlO3 Hollow Spheres: Synthesis and Luminescence Properties. American Chemical Society, 27, 11654-11659.
[20]
Oliveira, V.H., Khaidukov, N.M., Silva, E.C. and Faria, L.O. (2011) Study of TL Properties of LaAlO3:Ce,Dy Crystals for UV Dosimetry. Radiation Measurements, 46, 1173-1175.
[21]
Singh, V., Watanabe, S., Gundu Rao, T.K., Chubaci, J.F.D. and Kwak, H.-Y. (2011) Characterization, Photoluminescence, Thermally Stimulated Luminescence and Electron Spin Resonance Studies of Eu3+ Doped LaAlO3 Phosphor. Solid State Sciences, 13, 66-71.
[22]
Berchmans, L.J., Angappan, S., Visuvasam, A. and Ranjith Kumar, K.B. (2008) Preparation and Characterization of LaAlO3. Material Chemical Physics, 109, 113-118.
[23]
Mendoza-Mendoza, E., Padmasree, P.K., Montemayor, S.M. and Fuentes, A.F. (2012) Molten Salts Synthesis and Electrical Properties of Sr- and/or Mg-Doped Perovskite-Type LaAlO3 Powders. Journal of Materials Science, 47, 6076-6085.
https://doi.org/10.1007/s10853-012-6520-1
[24]
Mendoza-Mendoza, E., Montemayor, S.M., Escalante-García, J.I. and Fuentes, A.F. (2012) A “Green Chemistry” Approach to the Synthesis of Rare-Earth Aluminates: Perovskite-Type LaAlO3 Nanoparticles in Molten Nitrates. Journal of American Ceramics Society, 95, 1276-1283. https://doi.org/10.1111/j.1551-2916.2011.05043.x
[25]
Koc, N.S., Oksuzomer, F., Yasar, E., Akturk, S. and Gurkaynak, M.A. (2006) Affect Sol-Gel Modifications on Formation and Morphology of Nanocrystalline Lanthanum Aluminate. Material Research Bulletin, 41, 2291-2297.
[26]
Rivera, T., Olvera, L., Azorín, J., Sosa, R., Soto, A.M., Barrera, M. and Furetta, C. (2006) Preparation of Luminescent Nanocrystals Started from Amorphous Zirconia Prepared by Sol-Gel Technique. Radiation Effects and Defects in Solids, 161, 91-100. https://doi.org/10.1080/10420150600615847
[27]
Pechini, M.P. (1967) Method of Preparing Lead and Alkaline Earth Titanates and Niobates and Coating Method Using the Same to Form a Capacitor. United States Patent Office, Patent 3,330,697.
[28]
Hernández, M.T. and González, M. (2002) Synthesis of Resins as Alpha-Alumina Precursors by the Pechini Method Using Microwave and Infrared Heating. Journal of the European Ceramic Society, 22, 2861-2868.
[29]
Huízar-Félix, A.M., Hernández, T., de la Parra, S., Ibarra, J. and Kharisov, B. (2012) Sol-Gel Based Pechini Method Synthesis and Characterization of Sm1-xCaxFeO3. Perovskite 0.1 ≤ x ≤ 0.5. Powder Technology, 229, 290-293.
[30]
Pagonis, V., Kitis, G. and Furetta, C. (2005) Numerical and Practical Exercises in Thermoluminescence. Springer, Berlin, 23.
[31]
Chen, R. (1969) On the Calculation of Activation Energies and Frequency Factors from Glow Curves. Journal of Applied Physics, 40, 570-585.
https://doi.org/10.1063/1.1657437
[32]
Rivera-Montalvo, T., Morales-Hernandez, A., Barrera-Angeles, A.A., Alvarez-Romero, R., Falcony, C. and Zarate-Medina, J. (2017) Modified Pechini’s Method to Prepare LaAlO3:RE Thermoluminescent Materials. Radiation Physics and Chemistry, in press.
[33]
Boronat, C., Rivera, T., Garcia-Guinea, J. and Correcher, V. (2017) Cathodoluminescence Emission of REE (Dy, Pr and Eu) Doped La AlO3 Phosphors. Radiation Physics and Chemistry, 130, 236-242.
