Influence of sol-gel matrices on the optical excitation of europium ions

• Autorzy: Banski M. , Podhorodecki A. , Misiewicz J.
• Języki publikacji: EN

Abstrakty

EN

Photoluminescence (PL), total photoluminescence excitation (TPLE), transmission and decay photoluminescence experiments were done to establish the most efficient excitation mechanism of the europium (Eu3+) ions in amorphous Al2O3 and Y3Al5O12 host matrices. Both matrices were fabricated using the sol-gel technique, doped with Eu3+ ions and sputtered on a flat quartz plate. Because of relatively low temperatures of annealing (200 °C), after this treatment the matrices should remain in an amorphous phase. In such a system, Eu3+ ions occupy the points having different site symmetries. However, based on characteristic features of the PL spectra, the effective site symmetry (ESS) parameter was defined to describe the PL properties of the Eu3+ ions in various matrices. Low intensive direct f-f transitions at 392, 465, 530 nm were observed in the TPLE spectra. The most intensive, wide excitation bands were centred at around 250-260 nm and the charge transfer process was found to be related to these excitation bands. Finally, a good correlation between photoluminescence lifetimes, the PL intensity and CT energy was observed.

Słowa kluczowe

EN

excitation mechanism; charge transfer; europium; amorphous matrix; photoluminescence

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2010
• Tom: Vol. 28, No. 1
• Strony: 217--227
• Opis fizyczny: Bibliogr. 29 poz.

Twórcy

autor

Banski M.

autor

Podhorodecki A.

autor

Misiewicz J.

• Institute of Physics Wrocław University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland

Bibliografia

• [1] KIM T., YOON Y., HWANG Y., CHUNG H., KIM I.H., AHN Y., Mater. Lett., 47 (2001), 290.
• [2] MOLCHAN I.S., GAPONENKO N.V., KUDRAWIEC R., MISIEWICZ J., THOMPSON G.E., Mater. Sci. Eng. B, 105 (2003), 37.
• [3] KUDRAWIEC R., MISIEWICZ J., BRYJA L., MOLCHAN I.S., GAPONENKO N.V., J Alloys Compd., 341 (2002), 211.
• [4] WITTMANN H.F., GRUNER J., FRIEND R.H., SPENCER G.W.C., MORATTI S.C., HOLMES A.B., Adv. Mater., 7 (1995), 541.
• [5] KENYON A.J., Prog. Quant. Electron., 26 (2002), 225.
• [6] RAVICHADRAN D., ROY E., CHAKHOVSKOI A.G., HUNT C.E., WHITE W.B., ERDEI S., J. Lumin., 71 (1997), 291.
• [7] MAEDA N., WADA N., ONODA H., MAEGAWA A., KOJIM K., Opt. Mater., 27 (2005), 1851.
• [8] MALIAREVICH G.K., GAPONENKO N.V., MUDRYI A.V., DROZDOV Y.N., STEPIKHOVA M.V., STEPANOVA E.A., Semiconductors, 43 (2009), 158.
• [9] MOLCHAN I.S., GAPONENKO N.V., KUDRAWIEC R., MISIEWICZ J., BRYJA L., THOMPSON G.E., SKELDON P., J. Alloys. Compd., 341 (2002), 251.
• [10] MOLCHAN I.S., GAPONENKO N.V., KUDRAWIEC R., MISIEWICZ J., THOMPSON G.E., SKELDON P., J. Electrochem. Soc., 151 (2004), H16.
• [11] GAPONENKO N.V., MOLCHAN I.S., SERGEEV O.V., THOMPSON G.E., PAKES A., SKELDON P., KUDRAWIEC R., BRYJA L., MISIEWICZ J., PIVIN J.C., HAMILTON B., STEPANOVA E.A., J. Electrochem. Soc., 149 (2002), H49.
• [12] WALSH B.M., Judd–Ofelt Theory: Principles and Practices, [In:] B. di Bartolo, O. Forte (Eds.), Advances in Spectroscopy for Lasers and Sensing, Springer, New York, 2006, p. 403.
• [13] BUNZLI J.-C.G., Rare Earth Luminescence Centres in Organic and Biochemical Compounds, [In:] G. Liu, B. Jacquier (Eds.), Spectroscopic Properties of Rare Earths in Optical Materials, Springer, New York, 2005, p. 462.
• [14] HARADA M., GOTO M., J. Alloys. Compd., 408–412 (2006), 1193.
• [15] PENG A., XIE E., JIA C., JIANG R., LIN H., Mater. Lett., 59 (2005), 3866.
• [16] ZHAO Z., ZENGA Q.G., ZHANGA Z.M., DING Z.J., J. Lumin., 122 (2007), 862.
• [17] ZHU Y., DING C., J. Solid State. Chem., 139 (1998), 124.
• [18] SHIIKI K., IGARASHI M., KAIJYU H., Jpn. J. Appl. Phys., 42 (2003), 5185. Influence of sol-gel matrices on the optical excitation of europium ions 227
• [19] XU Y.N., CHING W.Y., Phys. Rev. B, 59 (1999), 10530.
• [20] NAKAZAWA E., J. Lumin., 100 (2002). 89.
• [21] YU O., LIU Y., WU S., LU X., HUANG X., LI X., J. Rare Earth, 26 (2008), 783.
• [22] CARNALL W.T., J. Less Common Met., 122 (1986), 1.
• [23] KRUPA J.C., J. Solid State Chem., 178 (2005), 483.
• [24] YAVETSKIY R., DUBOVIK M., TOLMACHEV A., TARASOV V., Phys. Stat. Sol. (c), 2 (2005), 268.
• [25] HOEFDRAAD H.E., J. Solid State Chem., 15 (1975), 175.
• [26] LI L., ZHANG S., J. Phys. Chem. B, 110 (2006), 21438.
• [27] DORENBOIS P., J. Phys-Condens. Mater., 15 (2003), 8417.
• [28] CHEN X.Y., LIU G.K., J. Solid State Chem., 178 (2005), 419.
• [29] DAI Q., SONG H., WANG M., BAI X., DONG B., QIN R., QU X., ZHANG H., J. Phys. Chem. C, 112 (2008), 19399.