Photoluminescence from Divalent Europium Ion Doped in Silica Glass Prepared with Sol-Gel Technique

抄録

Europium ions were doped in silica glass matrix with a sol-gel method as well as Al co-dopant. The samples densified at 1050°C showed bright blue emission under UV illuminations. Lifetime of the luminescence was about 1 μs and did not depend on Al concentration, indicating that europium existed as divalent form at proximate positions to aluminum ions. [DOI: 10.1380/ejssnt.2015.51]