Effect of the Addition of WO 3 on the Structure and Luminescent Properties of ZnO-B 2 O 3 :Eu 3+ Glass.

Autor:	Yordanova, Aneliya, Aleksandrov, Lyubomir, Milanova, Margarita, Iordanova, Reni, Petrova, Petia, Nedyalkov, Nikolay
Předmět:	BORATE glass TUNGSTATES GLASS RAMAN spectroscopy GLASS structure PHOTOLUMINESCENCE LUMINESCENCE
Zdroj:	Molecules; Jun2024, Vol. 29 Issue 11, p2470, 14p
Abstrakt:	Glasses with the compositions in mol % of 50ZnO:(50 − x)B2O3:0.5Eu2O3:xWO3, x = 0, 1, 3, 5 and 10 were obtained by applying the melt-quenching method and investigated by Raman spectroscopy, DSC analysis and photoluminescence (PL) spectroscopy. Raman spectra revealed that tungstate ions incorporate into the base zinc borate glass as tetrahedral [WO4]2− groups, and octahedral [WØ4O2]2− species with four bridging and two non-bridging oxygen atoms. There are also metaborate, [BØ2O]− and pyroborate units, [B2O5]4−, in the glass networks. The glasses are characterized by good transmission in the visible region, at about 80%. Photoluminescence (PL) spectra evidenced that WO3 is an appropriate constituent for the modification of zinc borate glass structure and for enhancing the Eu3+ luminescent intensity. The most intense luminescence peak observed, at 612 nm, suggests that the glasses are potential materials for red emission. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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