The luminescence of mercury-like ions in and the crystal structure of SrLaBO4

Abstract

The crystal structure of SrLaB04 contains triangular borate groups. The luminescence of mercury-like ions (Sn*+, Sb3+, Tl+, Pb*+, Bi3+) in this host lattice is characterized by a large Stokes shift. The Pb2+ is a very efficient activator at room temperature. The luminescent properties are discussed in terms of earlier models related to an off-center position of the metal ion. The emission of Eu3+ shows that the crystal structure has a disordered nature and confirms an off-center position. Energy transfer from Pb2+ to Eu3+ and Tb3+ was studied and found to be inefficient. o 1%~ Academic Press, IK.

Luminescence–structure relationships in solids doped with Bi3+

“…Note that several compounds reported in the archival literature do not appear in Table 5 because their crystal structure is either not available ( e.g. Ln 2 SO 6 (Ln = Y, Lu), 17 Sr 3 YAl 2 O 7.5 , 71 BaLa 2 Si 3 O 10 , 72 Sr 2 GdAlO 5 , 27 SrLaBO 4 , 73 LiLuSiO 4 , 74 Sr 3 Lu(BO 3 ) 3 , 75 LiYGeO 4 , 76 Ba 3 Sc 4 O 9 , 77 Ba 2 Ga 2 GeO 7 , 78 Gd 2 MgTiO 6 79 ) or too complex for the calculator that we have designed in this work ( e.g. Sr 2 V 2 O 7 (ICSD-10330), 80 Ba 3 Y 4 O 9 (ICSD-230718), 81 K 2 MgGeO 4 (MP-1212053), 82 Y 4 Al 2 O 9 (ICSD-63650) 83 Ba 2 Y 5 B 5 O 17 (ICSD-8356), 84 Na 3 YSi 3 O 9 (ICSD-20774), 85 Ca 3 Al 4 ZnO 10 (ICSD-120597), 86 CdSiO 3 (ICSD-170703), 87 Sr 3 Sc 4 O 9 , 88 AMB 5 O 10 with M = La, Gd, Y and A = Mg, Zn, and Cd, 89 Li 2 BaP 2 O 7 (ICSD-280927), 90 and MP 3 O 9 with M = Sc, Y, Lu).…”

Extraordinary intense blue Tl+ lone-pair photoluminescence from thallium(i) chloride hydroborate Tl3Cl[B12H12]

“…It should be noted that SrLaBO 4 :Tl + also shows the first strong excitation band at 260 nm, while the emission band is located in the blue range, viz. at 445 nm (22 500 cm −1 ) as well, 26 while most Tl + -activated luminescent materials show emission in the UV range. [27][28][29] This is explained by the strong covalent character of the Tl +ligand bonds in such alkali-metal related hydroborates.…”