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

• Published in: Molecules (Basel, Switzerland) Vol. 29; no. 11
• Main Authors: Yordanova, Aneliya, Aleksandrov, Lyubomir, Milanova, Margarita, Iordanova, Reni, Petrova, Petia, Nedyalkov, Nikolay
• Format: Journal Article
• Language: English
• Published: Switzerland 24-05-2024
• Subjects: glasses; photoluminescence; europium; structure
• ISSN: 1420-3049

Glasses with the compositions in mol % of 50ZnO:(50 - x)B
O
:0.5Eu
O
:xWO
, 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 [WO
]
groups, and octahedral [WØ
O
]
species with four bridging and two non-bridging oxygen atoms. There are also metaborate, [BØ
O]
and pyroborate units, [B
O
]
, in the glass networks. The glasses are characterized by good transmission in the visible region, at about 80%. Photoluminescence (PL) spectra evidenced that WO
is an appropriate constituent for the modification of zinc borate glass structure and for enhancing the Eu
luminescent intensity. The most intense luminescence peak observed, at 612 nm, suggests that the glasses are potential materials for red emission.