REAlGe2O7, neue Verbindungen der Aluminium-Germanate Seltener Erden

Synthesis and photoluminescence properties of color-tunable BaLa2WO7:Eu3+ phosphor

“…All decay curves were fitted by the single exponential decay I = I 0 exp(−t/ ), where I 0 and I are the luminescence intensities at time 0 and t, respectively, and is the radiative decay time. The results indicate that the Eu 3+ environment is unique, in accordance with the crystal structure, and that only one local Eu 3+ environment exists [37][38][39][40]. It is thus suggested that the Eu 3+ ions were shielded by La and W polyhedrals in the BaLa 2 WO 7 structure, which caused a weak energy transfer between Eu 3+ pairs.…”

Synthesis and luminescent properties of Ln3+ (Eu3+, Sm3+, Dy3+)-doped lanthanum aluminum germanate LaAlGe2O7 phosphors

“…Therefore, germanates are the host candidate in the search for phosphors with reasonable conductivity. The stoichiometric formula of germanates MRGe 2 O 7 (where M = Al 3+ , Ga 3+ or Fe 3+ and R = rare-earth ion) was reported in the early eighties to belong to the monoclinic AlNdGe 2 O 7 structure type [8][9][10], space group P2 1 /c (no. 14).…”

Luminescence and Energy Transfer Properties of Gd3+ and Tb3+ in LaAlGe2O7

“…Accordingly, Gd 3+ is used as the sensitizer of Sm 3+ , Eu 3+ , Eu 2+ , Tb 3+ , and Dy 3+ in many systems. [2][3][4][5] The stoichiometric formula of germanates MRGe 2 O 7 (where M ) Al 3+ , Ga 3+ , or Fe 3+ and R ) rare-earth ion) was reported in the early 1980s to belong to the monoclinic AlNdGe 2 O 7 structure type, [6][7][8] space group P2 1 /c (no. 14).…”

“…The stoichiometric formula of germanates MRGe 2 O 7 (where M = Al 3+ , Ga 3+ , or Fe 3+ and R = rare-earth ion) was reported in the early 1980s to belong to the monoclinic AlNdGe 2 O 7 structure type, − space group P 2 1 / c (no. 14).…”