Abstract
This work reports on the preparation of a luminescent blue-emitting rare earth (RE) Tm-doped oxide phosphor. Nanocrystalline RE2O3:Tm3+ particles were prepared via the combustion method using citric acid, glycine, or urea as fuels. Samples were doped with different percentages of the activator Tm3+. The post-annealing treatment was performed in air for all the samples, at temperatures ranging from 800 to 1100°C, for 4 h. The samples were characterized by X-ray diffraction (XRD), photoluminescence spectroscopy (PL) and scanning electron and transmission microscopies (SEM and TEM) in order to determine the best synthetic procedure. The post-annealed powders showed blue emission with maximum at 452 nm characteristics for Tm3+ transition 1D2 →3H4 (under UV excitation at 360 nm). Samples, presented a tri-dimensional porous structure (50–200 nm) formed of spheroid particles with a diameter between 20 and 60 nm. The best luminescent material was obtained when urea was used to prepare nanoparticles of Gd2O3 doped with 0.5% Tm3+, and 1100°C was used as the post-annealing temperature.
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Notes
Y2O3 99.99% and Tm2O3 99.99% was kindly provided by Dr. Jun Lin, Changchun, China.
References
Lingdong S, Jiang Y, Changhui L, Chunsheng L, Chunhua Y (2000) Rare earth activated nanosized oxide phosphors: synthesis and optical properties. J Lumin 87–89:447–450
Minami T, Utsubo T, Miyata T, Suzuki Y (2003) PL and EL properties of Tm-activated vanadium oxide-based phosphor thin films. Thin Solid Films 445(2):377–381
Nakanishi Y, Wada H, Kominami H, Kottaisamy M, Aoki T, Hatanaka Y (1999) Growth and characterization of Y2O3:Tm thin-film blue-emitting phosphor. J Eletrochem Soc 146(11):4320–4323
Fumo DA, Morelli MR, Segadães AM (1996) Combustion synthesis of calcium aluminates. Mater Res Bull 31(10):1243–1255
Gomes J, Pires AM, Serra OA (2002) Blue phosphor prepared by combustion method. Eclética Química 27(n.esp.):187–196
Gomes J, Pires AM, Serra OA (2004) Morphological study of Sr2CeO4 blue phosphor with fine particles. Quim Nova 27(5):706–708
Dasgupta N, Krishnamoorthy R, Jacob KT (2001) Glycol–nitrate combustion synthesis of fine sinter-active yttria. Int J Inorg Mater 3(2):143–149
Hao J, Studenikin SA, Cocivera M (2001) Blue, green and red cathodoluminescence of Y2O3 phosphor films by spray pyrolysis. J Lumin 93:313–319
Dieke GH (1968) Spectra and energy levels of rare earth ions in crystals. Interscience Publishers, New York
Rao RP (2005) Tm3+ activated lanthanum phosphate: a blue PDP phosphor. J Lumin 113(3/4):271–278
Faustino WM, Junior SA, Thompson LC, de Sá GF, Malta OL, Simas AM (2005) Theoretical and experimental luminescence quantum yields of coordination compounds of trivalent europium. Int J Quantum Chem 103:572–579
http://www.colutron.com/products/imaging/pscreen.html
International Center for Diffraction Data c. 1998 (CD-ROM) Powder Diffaction File PDF-2 dabase sets 1-44. Pensylvannia Joint Commitee on Powder Diffraction Standards
Cullity B (1978) Elements of X-ray diffraction, 2nd edn. Adisson Wesley, Redding
Justel T, Nikol H, Ronda C (1998) New developments in the field of luminescent materials for lighting and displays. Angew Chem Int Ed 37(22):3084–3103
Santa-Cruz PA, Teles FS (2003) Spectra Lux Software v.2.0 Beta. Ponto Quântico Nanodispositivos, RENAMI
Song H, Sun B, Wang T, Lu S, Yang L, Chen B, Wang X, Kong X (2004) Three-photon upconversion luminescence phenomenon for the green levels in Er3+/Yb3+ codoped cubic nanocrystalline yttria. Solid State Commun 132(6):409–413
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Authors gratefully thank to Brazilian agencies FAPESP, CNPq and CAPES for financial support.
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Gomes, J., Pires, A.M. & Serra, O.A. Nanocrystalline RE2O3:Tm3+ (RE: Gd3+, Y3+) Blue Phosphors Synthesized via the Combustion Method. J Fluoresc 16, 411–421 (2006). https://doi.org/10.1007/s10895-006-0090-z
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DOI: https://doi.org/10.1007/s10895-006-0090-z