Abstract
Photoluminescence data of Eu-doped SnO2 xerogels are presented, yielding information on the symmetry of Eu3+ luminescent centers, which can be related to their location in the matrix: at lattice sites, substituting to Sn4+, or segregated at particles surface. Influence of doping concentration and/or particle size on the photoluminescence spectra obtained by energy transfer from the matrix to Eu3+ sites is investigated. Results show that a better efficiency in the energy transfer processes is obtained for high symmetry Eu3+ sites and low doping levels. Emission intensity from 5D0→7F1 transition increases as the temperature is raised from 10 to 240 K, under excitation at 266 nm laser line, because in this transition the multiphonon emission becomes significant only above 240 K. As an extension of this result, we predict high effectiveness for room temperature operation of Eu-based optical communication devices. X-ray diffraction data show that the impurity excess inhibits particle growth, which may influence the asymmetry ratio of luminescence spectra.
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References
Coffa S, Franzo G, Priolo F, Polman A, Serna R (1994) Phys Rev B 49:16313
Ishii M, Komuro S, Morikawa T (2003) J Appl Phys 94:3823
Ray SC, Karanjai MK, Dasgupta D (1998) Surf Coat Technol 102:73
Dien E, Laurent JM, Smith A (1999) J Eur Cer Soc 19:787
Rockenbecher J, ZumFelde U, Tischer M, Troger L, Haase M, Weller H (2000) J Chem Phys 112:4296
Peng H, Song H, Chen B, Wang J, Lu S, Kong X, Zhang J (2003) J Chem Phys 118:3277
Zhang H, Fu X, Niu S, Sun G, Xin Q (2005) J Luminescence 115:7
Yu L, Song H, Lu S, Liu Z, Yang L, Wang T, Kong X (2004) Mat Res Bull 39:2083
Brito GES, Ribeiro SJL, Briois V, Dexpert -Ghys J, Santilli CV, Pulcinelli SH (1997) . J Sol-Gel Sci Technol 8:261
Ribeiro SJL, Pulcinelli SH, Santilli CV (1992) Chem Phys Lett 190:64
Morais EA, Ribeiro SJL, Scalvi LVA, Santilli CV, Ruggiero LO, Pulcinelli SH, Messaddeq Y (2002) J Alloys Comp 344:217
Matsuoka T, Tohda T, Nitta T (1983) J Eletrochem Soc 130:417
Matsuoka T, Kasahara Y, Tsuchyia M, Nitta T, Hayakawa S (1978) J Eletrochem Soc 125:102
Yanes AC, DelCastillo J, Torres M, Peraza J, Rodriguez VD, Mendes-Ramos J (2004) Appl Phys Lett 85:2343
Powder Diffraction File, Inorganic Vol. 21, Published by the JCPDS, Swarthmore, 1983
Nogami M, Enomoto T, Hayakawa T (2002) J Luminescence 97:147
Weber MJ (1968) Phys Rev 171:283
Morais EA, Scalvi LVA, Geraldo V, Scalvi RMF, Ribeiro SJL, Santilli CV, Pulcinelli SH (2004) J Eur Cer Soc 24:1857
Fu X, Zhang H, Niu S, Xin Q (2005) J Solid State Chem 198:603
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Authors acknowledge CAPES, CNPq and FAPESP for financial support.
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Morais, E.A., Scalvi, L.V.A., Tabata, A. et al. Photoluminescence of Eu3+ ion in SnO2 obtained by sol–gel. J Mater Sci 43, 345–349 (2008). https://doi.org/10.1007/s10853-007-1610-1
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DOI: https://doi.org/10.1007/s10853-007-1610-1