A new yellowish-green-emitting phosphor: Eu2+-doped K4CaSi3O9

Interaction between the exchanged Mn2+ and Yb3+ ions confined in zeolite-Y and their luminescence behaviours

“…5a, and the luminescence of those samples with x  < 0.4 is too weak to be detected. The emission peak shifts from 650 nm to 685 nm with increasing the Mn 2+ contents in zeolite-Y, which is primarily owed to the interaction between Mn 2+ ions with delocalized d electrons and multiple sites for Mn 2+ ions in the cages of zeolite-Y34. In order to further investigate the luminescent process of Mn 2+ in zeolite-Y, Fig.…”

On the ambient pressure polymorph of K2Ca3Si3O10—An unusual mixed-anion silicate and its structural and spectroscopic characterization

“…So far, the interpretation of melt formation, melting behavior and the assemblages of crystalline potassium calcium silicates at sub-solidus temperatures in both material-scientific studies on luminescence properties [9,10] and thermodynamic modeling [11] relied on the above mentioned investigation that was published more than 80 years ago. In the course of a systematic reinvestigation of this ternary system during the last years we were able to show that (i) the chemical compositions of the phases that have been previously reported are partly incorrect and (ii) the an additional synthesis parameter we succeeded to prepare a potassium calcium silicate with an oxide ratio of 1:3:3 (or K 2 Ca 3 Si 3 O 10 ) which belongs to the group of oligosilicates containing trimers of [Si 3 O 10 ]-units [18].…”

Luminescence properties and crystallographic sites for Eu3+ ions in fluorthalenite Y3Si3O10F

“…There have been extensive studies on in oxide-based phosphors such as phosphates [1][2][3], borates [4][5][6], and silicates [7][8][9][10] doped with rare earth ions. In particular, the silicate-based phosphors have recently attracted much attention because of its excellent thermal and chemical stability, lower cost, and high luminescent efficiency.…”