Highly thermostable Ba2Ln2Ge4O13:Dy3+ (Ln = Y, Gd) phosphors: Synthesis and optical properties

Color-tunable luminescence and temperature sensing properties of Bi3+/Sm3+ or Bi3+/Eu3+ codoped Ba2Gd2Ge4O13 phosphors

“…13 In the present study, we focus on the structural characterization and luminescence properties of Ba 2 Gd (RE = Pr, Nd, Eu, Gd, Dy, Y). [14][15][16][17][18][19][20][21] Recently, several research groups have succeeded in creating a number of efficient phosphors based on the Ba 2 RE 2 Ge 4 O 13 family.…”

“…To date only a few germanates containing a similar type of building blocks are known, among them Na 4 Sc 2 Ge 4 O 13 , Cu 2 Sc 2 Ge 4 O 13 , Cu 2 Fe 2 Ge 4 O 13 , ASr 2 V 3 O 3 (Ge 4 O 13 )Cl (A = Na and K) and Ba 2 RE 2 Ge 4 O 13 (RE = Pr, Nd, Eu, Gd, Dy, Y). 14–21…”

“…It has been revealed that the phosphors may be considered as promising materials for UV-excited LEDs due to good thermal stability of emission, high color purity and suitable CIE color coordinates. H. Tang et al 20 have studied the luminescence properties of Ba 2 Gd 2 Ge 4 O 13 :Dy 3+ and Ba 2 Y 2 Ge 4 O 13 :Dy 3+ phosphors emitting visible yellowish-white light under 365 nm excitation. It has been shown that the germanates have favorable thermal stability: the emission intensity at 423 K maintained about 91% of the initial value measured at room temperature.…”

Solvothermal Treatment of Micron-Sized Commercial SrAl2O4:Eu2+, Dy3+ Phosphors and One-Step Preparation of Nanophosphors for Fingerprint Imaging

“…SrAl 2 O 4 :Eu 2+ , Dy 3+ is a representative of inorganic long afterglow luminescent materials, first synthesized by Matsuzawa in 1996, which has several outstanding advantages: stability, high efficiency, and less toxicity [31]. However, the current production process of commercial SrAl 2 O 4 :Eu 2+ , Dy 3+ is based on solid-phase reaction [32][33][34][35][36][37], which leads to poor homogeneity and product grain size in the micrometer range, thus limiting the practical application of SrAl 2 O 4 :Eu 2+ , Dy 3+ phosphors in fields such as bioimaging, biomedicine, and fine chemicals. However, with the advancement of industrial and medical technologies, there is an urgent need for nanophosphors with good optical properties, uniform particles, and controllable morphology [17,38].…”