Eu3+ emission in phosphate glasses with high UV transparency

• Published in: Journal of luminescence Vol. 154; pp. 294 - 297
• Main Authors: Silva, G.H., Anjos, V., Bell, M.J.V., Carmo, A.P., Pinheiro, A.S., Dantas, N.O.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2014; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Eu3; Exact sciences and technology; Judd–Ofelt parameters; Luminescence; Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Phosphate glasses; Photoluminescence; Physics; Quantum efficiency; Phosphate glasses; Eu3; Quantum efficiency; Judd–Ofelt parameters; Luminescence; Lead oxide; Transparency; Inorganic compounds; Doping; Photoluminescence; Judd-Ofelt theory; Zinc Oxides; Phosphate glass; Radiative lifetimes; Europium additions; Aluminium Oxides; Zinc oxide; Absorption spectra; Europium; Aluminium oxide; Quantum yield; Time resolved spectra; Judd-Ofelt parameters; EU; Ultraviolet radiation; Barium oxide; Alumina
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2014.04.043

We report a study of the phosphate glass PZABP (P2O5–ZnO–Al2O3–BaO–PbO) doped with europium (Eu3+) in different concentrations. Absorption, photoluminescence and time resolved photoluminescence were used to investigate the influence of increasing Eu3+ concentrations. The present glass exhibits Eu3+ absorption bands in the ultraviolet region (about 300nm) due to the high transparency of the system compared to other phosphate glasses. In this way, it was possible to obtain the Judd–Ofelt parameters from the emission and absorption spectra. Moreover, a strong red emission attributed to the transition 5D0→7F2 of Eu3+ (611nm) was observed. It was found that the radiative lifetime and the quantum efficiency of the Eu3+ level, 5D0, do not suffer a significant change as the concentration of Eu3+ ions increases. •UV transparent glass matrix is used for Eu3+ doping.•Judd–Ofelt parameters from the emission and absorption spectra were obtained.•Red emission attributed to the transition 5D0→7F2 of Eu3+ (611nm) was observed.