Luminescent Eu3+-activated silicate, luminescent screen provided with such a silicate and low-pressure mercury vapour discharge lamp provided with such a screen

摘要

Luminescent Eu³⁺-activated alkaline earth metal-rare earth metal silicate, which is defined by the formula Ba₂Gd2-x-yYxEuySi4-zGezO₁₃ , in which 0 ≦ x ≦ 1.3, 0.01 ≦ y ≦ 1.0 and 0 ≦ z ≦ 4.