Characterization of various Eu2+ sites in Ca2SiO4:Eu2+ and Ba2SiO4:Eu2+ by high-pressure spectroscopy

• Autorzy: Grinberg M. , Barzowska J. , Baran A. , Kukliński B.
• Języki publikacji: EN

Abstrakty

EN

Photoluminescence of Ba2SiO4 and Ca2SiO4 activated with Eu2+ was investigated at various temperatures (from 10 K to 300 K) and pressures (from ambient to 200 kbar). At ambient pressure and room temperature, under UV excitation both phosphors yielded a green emission band with maxima at 505 nm and 510 nm for Ba2SiO4 and Ca2SiO4, respectively. The energies of these bands depended on pressure; the pressure shifts were-12:55 cm-1/kbar for Ba2SiO4:Eu2+; and -5:59 cm-1/kbar for Ca2SiO4:Eu2+. In the case of Ca2SiO4:Eu2+, we observed additional broadband emission at lower energies with a maximum at 610 nm (orange band). The orange and green emission in Ca2SiO4:Eu2+ had different excitation spectra: the green band could be excited at wavelengths shorter than 470 nm, whereas the orange band - at wavelengths shorter than 520 nm. The pressure caused a red shift of orange emission of 7.83 cm-1/kbar. The emission peaked at 510 nm was attributed to the 4f65d!4f7(8S7=2) transition of Eu2+ in the b - Ca2SiO4:Eu2+ phase, whereas the emission peaked at 610 nm - to the g - Ca2SiO4:Eu2+ phase. The emission of Ba2SiO4:Eu2+ peaked at 505 nm was attributed to the 4f65d! 4f7(8S7=2) transition of Eu2+ in the b - Ba2SiO4 phase.

Słowa kluczowe

EN

high pressure spectroscopy; Eu2+; silicates

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2011
• Tom: Vol. 29, No. 4
• Strony: 272--277
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Grinberg M.

autor

Barzowska J.

autor

Baran A.

autor

Kukliński B.

• Institute of Experimental Physics, University of Gda´nsk, Wita Stwosza 57, 80-952 Gda´nsk, Poland

Bibliografia

• [1] KUO C.H., SHEU J.K., CHANG S.J., SU Y.K., WU L.W., TSAI J.M., LIU C.H., WU R.L., Jpn. J. Appl.Phys., 42, (2003), 2284
• [2] WANG Z.-J., YANG Z.-P., GUO Q.-L., LI P.-L., FU G. -S., Chin Phys. B, 18, (2009), 2068
• [3] KIM J.S., JEON P.E. , CHOI J.C., PARK H.Y., Solid State Commun. 133, (2005), 187
• [4] BALONIS M., GLASSER F. P., Cement and Concrete Res. 39, (2009), 733
• [5] MAHLIK S., GRINBERG M., SHI L., SEO H. J., J.Phys.: Condens. Matter 21 (2009) 235603
• [6] HENDERSON B., IMBUSH G.F., Optical Spectroscopy of Inorganic Solids, (Oxford: Clarendon,1989)
• [7] DORENBOS P., Lumin J., 104 , (2003), 239
• [8] KIM J. S., PARK H.Y., KIM S. M., CHOI J. C., PARK H. L., Solid State Commun. 133, (2005), 445
• [9] POORT S.H.M., JANSSEN W., BLASSE G., J. All.Comp. 260, (1997), 93
• [10] WANG M., ZHANG X., HAO Z., REN X., LUO Y.,WANG X., ZHANG J., Optical Materials 32 (2010), 1042
• [11] CHOI N.-S., PARK K.-W., PARK B.-W., ZHANG X.-M., KIM J.-S., KUNG P., KIM S.M., Lumin J.,130, (2010), 560
• [12] POORT S.H.M., MEYERINK A., BLASSE G., J.Phys. Chem. Solids 58, (1997), 1451
• [13] SMET P.F., AVCI N., LOOS B., VANHEECKE J.E., POELMAN D., J. Phys. Cond. Matter, 19,(2007), 246223
• [14] MORI K., KIYANAGI R., YONEMURA M.,IWASE K., SATO T., ITOH K., SUGIYAMA M.,KAMIYAMA T., FUKUNAGA T., J. Sol. State Chem.179, (2006), 3289
• [15] ZADOV A.Z., GAZEEV V.M., PERTSEV N.N., GURBANOV A.G., GOBECHIYA E.R.,YAMNOVA N.A., CHUKANOV N.V., NewMinerals, Geology of Ore Deposits 51, 741 (2009)original text :Proceedings of Russian Mineral Society Pt. CXXXVII, no 6, (2009), 46
• [16] DORENBOS P., J. Luminesc. 91, (2000), 155
• [17] GRINBERG M., Optical Material, 28, (2006), 26
• [18] REMY C., ANDRAULT D., MADON M., J. Am.Cer. Soc. 80, (1997), 851