Strong visible green upconversion emission in nanocrystalline BaZrO3:Yb3+ powder, obtained by a hydrothermal process at 100ºC, is reported. The unconverted emission has a quadratic dependence on the pump intensity with a lifetime around half that of the NIR lifetime. Results suggest cooperative upconversion as the mechanism responsible for the green fluorescence. This efficient Yb3+-based cooperative up-conversion process allows the development of novel emitting materials in the UV-VIS range.
2. Chen, G. Y., Y. G. Zhang, G. Somesfalean, and Z. G. Zhang, "Two-color upconversion in rare-earth-ion-doped ZrO2 nanocrystals," Appl. Phys. Lett., Vol. 89, 163105, 2006.
doi:10.1063/1.2363146
3. Filippov, V., Y. Chamorovskii, J. Kerttula, K. Golant, M. Pessa, and O. G. Okhotnikov, "Double clad tapered fiber for high power applications," Opt. Express, Vol. 16, No. 3, 1929, 2008.
doi:10.1364/OE.16.001929
4. Marchese, S. V., C. R. E. Baer, R. Peters, C. Krankel, A. G. Engqvist, M. Golling, D. J. H. C. Maas, K. Petermann, T. Sudmeyer, G. Huber, and U. Seller, "Efficient femtosecond high power Yb : Lu2O3 thin disk laser," Opt. Express, Vol. 15, No. 25, 16966, 2007.
doi:10.1364/OE.15.016966
5. Gangwar, R., S. P. Singh, and N. Singh, "L-band superfluorescent fiber source," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 15, 2201-2204, 2007.
doi:10.1163/156939307783134362
6. De la Rosa, E., P. Salas, L. A. Diaz-Torres, A. Martinez, and C. Angeles, "Strong visible cooperative up-conversion emission in ZrO2: Yb3+Nanocrystals," JNN, Vol. 5, No. 1480, 2005.
doi:10.1163/156939307783134362
7. Qin, G. S., W. P. Qin, C. F. Wu, D. Zhao, J. S. Zhang, S. Z. Lu, S. H. Huang, and W. Xu, "Infrared-to-visible upconversion luminescence of Er3+ and Yb3+ co-doped germanate glass," J. Non-cryst Solids, Vol. 347, 52, 2004.
doi:10.1016/j.jnoncrysol.2004.08.268
8. Song, H. W., et al., "Three-photon upconversion luminescence phenomenon for the green levels in Er3+/Yb3+ codoped cubic nanocrystalline yttria," Solid State Commun., Vol. 132, 409, 2004.
doi:10.1016/j.ssc.2004.07.044
9. Balda, R., A. J. Garcia-Adeva, M. Voda, and J. Fernandez, "Upconversion processes in Er3+-doped KPb2 C15 ," Phys. Rev. B, Vol. 69, 205203, 2004.
doi:10.1103/PhysRevB.69.205203
10. Auzel, F., "Upconversion and anti-stokes processes with f and d ions in solids," Chem. Rev., Vol. 104, No. 139, 2004.
11. Suyver, J. F., A. Aebischer, D. Biner, P. Gerner, J. Grimm, S. Heer, K. W. Kramer, C. Reinhard, and H. U. Gudel, "Novel materials doped with trivalent lanthanides and transition metal ions showing near-infrared to visible photon upconversion," Optical Materials, Vol. 27, 1111, 2005.
doi:10.1016/j.optmat.2004.10.021
12. Chen, G. Y., Y. Liu, Z. G. Zhang, B. Aghahadi, G. Somesfalean, Q. Sun, and F. P. Wang, "Four-photon upconversion induced by infrared diode laser excitation in rare-earth-ion-doped Y2O3 nanocrystals," Chemical Physics Letters, Vol. 448, 127, 2007.
doi:10.1016/j.cplett.2007.09.078
13. Sun, C. J., Z. Xu, B. Hu, G. S. Yi, G. M. Chow, and J. Shen, "Application of NaYF4: Yb, Er upconversion fluorescence nanocrystals for solution-processed near infrared photodetectors," Appl. Phys. Lett., Vol. 91, 191113, 2007.
doi:10.1063/1.2807841
15. Goodenough, J. B., "Electronic and ionic transport properties and other physical aspects of perovskites," Rep. Prog. Phys., Vol. 67, 1915, 2004.
doi:10.1088/0034-4885/67/11/R01
16. Patnaik, A. S. and A. V. Virka, "Transport properties of potassium-doped BaZrO3 in oxygen- and water-vapor-containing atmospheres," J. Electrochem. Soc., Vol. 153, No. 7, A1397, 2006.
doi:10.1149/1.2203095
17. Zeng, X., G. Zhao, and J. Xu, "Effects of Yb concentration on the fluorescence spectra of Yb-doped YAlO3 single crystals," Spectrochimica Acta. Part A, Vol. 65, 184, 2006.
doi:10.1016/j.saa.2005.10.026
18. Amami, J., D. Hreniak, Y. Guyot, R. Pazik, C. Goutaudier, G. Boulon, M. Ayadi, and W. Strek, "Second harmonic generation and Yb3+ cooperative emission used as structural probes in size-driven cubic-tetragonal phase transition in BaTiO3 sol-gel nanocrystals," J. Lumin, Vol. 383, 119-120, 2006.
19. Mattarelli, M., S. Sebastiani, J. Spirkova, S. Berneschi, M. Brenci, R. Calzolai, A. Chiasera, M. Ferrari, M. Montagna, G. Nunzi-Conti, and S. Pelli, "Characterization of erbium doped lithium niobate crystals and waveguides," Opt. Mat., Vol. 28, 1292, 2006.
doi:10.1016/j.optmat.2006.01.030
20. Hua, R. N., H. J. Sun, H. M. Jiang, and C. S. Shi, "Optical spectroscopy properties of KMgF3: Eu2+ nanocrystals and powder synthesized by microemulsion and solvothermal," Chem. Res. Chinese U., Vol. 22, No. 4, 423, 2006.
doi:10.1016/S1005-9040(06)60133-5
21. Sundell, P. G., M. E. Bjorketun, and G. Wahnstrom, "Thermodynamics of doping and vacancy formation in BaZrO3 perovskite oxide from density functional calculations," Phys. Rev. B, Vol. 73, 104112, 2006.
doi:10.1103/PhysRevB.73.104112
22. Kang, S., A. Goyal, J. Li, A. A. Gapud, P. M. Martin, L. Heatherly, J. R. Thompson, D. K. Christen, F. A. List, M. Paranthaman, and D. F. Lee, "High-performance high-Tc superconducting wires," Science, Vol. 311, No. 31, 1911, 2006.
doi:10.1126/science.1124872
23. Shen, S. C., K. Hidajat, L. Y. E. Yu, and S. Kawi, "Simple hydrothermal synthesis of nanostructured and nanorod Zn-Al complex oxides as novel nanocatalysts," Adv. Mater., Vol. 16, No. 6, 541, 2004.
doi:10.1002/adma.200305783
24. Canibano, E., Proprietes spectroscopiques de l'ion Yb3+ dans les familles d'oxydes de molybdates K5Bi(MO4)4, de grenats Y3Al5O12, Gd3Ga5O12, Lu3Al5O12 et de perovskites YAlO3. Analyse de mecanismes d'extinction par concentration et evaluation de l'emission laser, PhD thesis, Universi Claude Bernaud Lyon, France, 2002.
25. Lim, S. F., R. Riehn, W. S. Ryu, N. Khanarian, C.-K. Tung, D. Tank, and R. H. Austin, "In vivo and scanning electron microscopy imaging of upconverting nanophosphors in caenorhabditis elegans," Nano Letters, Vol. 6, No. 2, 169-174, 2006.
doi:10.1021/nl0519175
26. Goldys, E. M., K. Drozdowicz-Tomsia, G. Zhu, H. Yu, S. Jinjun, M. Motlan, and M. Godlewski, "Fluorescence labeling," Optica Applicata, Vol. 36, No. 2-3, 217-224, 2006.
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