Sol-gel synthesis and spectral characteristics of crystal phosphors Sr2Y8(1 − x)Eu8x Si6O26

Abstract

Solid solutions of the compositions Sr 2 Y 8(1 -x) Eu 8x Si 6 O 26 (x = 0.005, 0.01, 0.03, 0.05, 0.1, 0.2, 0.4) based on silicates with the oxyapatite structure have been synthesized using the sol-gel method. The samples have been characterized using X ray diffraction and energy dispersive X ray analyses. The morphology of the synthesized solid solutions has been examined. The spectral luminescent characteristics of crystal phosphors have been investigated.

The structure and texture genesis of apatite-type lanthanum silicates during their synthesis by co-precipitation

“…Apatite-type silicates of rare earth elements known for a long time as structural analogs of Ca 10 (PO 4 ) 6 F 2 fluoroapatite [1][2][3][4][5][6][7] are considered as promising materials for such applications as matrix for radioactive waste immobilization, lasers and phosphors [2,[7][8][9][10][11][12][13][14]. Recently, Peng reported that La 9.33 (SiO 4 ) 6 O 2 : Ln 3+ (Ln = Ce, Eu, Tb) microfibers can provide green and red emission as dependent upon the nature of doping ions, which makes these materials potentially attractive for applications in field emission displays [9].…”

Luminescence Mechanism and Thermal Stabilities of a White Silicate Phosphor for Multifunctional Applications

“…Sr 2 Y 8 (SiO 4 ) 6 O 2 (denoted as SYSO) and Ca 2 Y 8 (SiO 4 ) 6 O 2 (denoted as CYSO) belong to the apatite‐type compounds. In recent years, the optical properties of Ce 3+ ‐, Tb 3+ ‐, Eu 2+ ‐, and Eu 3+ ‐doped SYSO/CYSO phosphors have been reported much . However, there are rare studies about Dy 3+ ‐doped SYSO/CYSO, especially for their luminescence phenomenon under different excited energy.…”

“…In recent years, the optical properties of Ce 3+ -, Tb 3+ -, Eu 2+ -, and Eu 3+ -doped SYSO/CYSO phosphors have been reported much. [24][25][26][27][28][29] However, there are rare studies about Dy 3+ -doped SYSO/CYSO, especially for their luminescence phenomenon under different excited energy.…”