Details

Autor(en) / Beteiligte

• Silva, G.H.
• Anjos, V.
• Bell, M.J.V.
• Carmo, A.P.
• Pinheiro, A.S.
• Dantas, N.O.

Titel

Eu3+ emission in phosphate glasses with high UV transparency

Ist Teil von

• Journal of luminescence, 2014-10, Vol.154, p.294-297

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.