Dy3+ ions as optical probes for studying structure of boro-tellurite glasses

• Published in: Journal of luminescence Vol. 178; pp. 27 - 33
• Main Authors: Tuyen, Vu Phi, Sengthong, Bounyavong, Quang, Vu Xuan, Van Do, Phan, Van Tuyen, Ho, Xuan Hung, Le, Thanh, Nguyen Trong, Nogami, Masayuki, Hayakawa, Tomokatsu, Huy, Bui The
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2016
• Subjects: Boro-tellurite; Dy3; JO-analysis; Phonon side band; Raman; White light; Phonon side band; JO-analysis; Raman; White light; Boro-tellurite; Dy3
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2016.05.027

Dy3+-doped glasses with various compositions (35+x)B2O3+ (45−x)TeO2+9.5ZnO+10Na2O+0.5Dy2O3 (x=0; 10 and 20) were prepared by a melt–quenching technique. The Dy3+ ions are used as an optical probe, of which the Judd–Ofelt parameters, the phonon-side band, and the Raman spectra were quantitatively estimated to search the change of glass structure (the change of the ratio of [BO4] to [BO3] units, formation of the non-bridging oxygens (NBO−), the change of [TeO3] to [TeO4] units) as a function of the B2O3 content. The Ω2 and Ω6 values of Dy3+-doped boro-tellurite samples are larger than that of Dy3+-doped borate or tellurite sample. The CIE chromaticity color coordinates were calculated for the luminescence spectra of Dy3+ ions of the glasses with the different compositions and they were all located in the vicinity of white light center of the color coordination diagram.