Appearance of new photoluminescence peak and spectral evolution of Eu3+ in La2Zr2O7 nanoparticles at high pressure

Sunlight-activated Eu3+-doped CaNaSb2O6F yellow-orange long-persistence luminescence material

“…CaNaSb 2 O 6 F is a crystal with a pyrochlore-type structure (cubic, space group Fd3 ˉm), a kind of important functional material widely used in the fields of electricity, magnetism, optical, thermal, catalysis and UV shielding. 38,39 The structure contains tetrahedral Sb 5+ sites and two distinct octahedral Ca 2+ /Na + sites, and the presence of ions with various valences at the same site may favor the creation of defects. 40,41 When fluoride ions are added to the oxide lattice, the coordination polyhedrons are distorted, creating non-centrosymmetric sites.…”

Effects of Gd3+ substitution on the structure, photoluminescence, scintillation, and thermometric features of Pr3+:Lu2Zr2O7 phosphors

“…A 2 B 2 O 7 (A = RE 3+ , and B = Zr 4+ , Ti 4+ , Hf 4+ , and Sn 4+ ) compounds with defective fluorite or pyrochlore structure have been regarded as ideal RE 3+ host materials by virtues of their binary metal cation sites, 9 excellent stability, 10 moderate phonon frequency, 11 high density and atomic number, 12 good radiation tolerance, 13 and so on. As revealed by Subramanian and Aravamudan, the crystal structure of A 2 B 2 O 7 is mainly determined by the cation radius ratio ( r A / r B ) 14 .…”

Co-crystallization of red emitting (NH4)3Sc(SO4)3:Eu3+ microfibers: structure–luminescence relationship for promising application in optical thermometry

“…The symmetry-dependent luminescence of trivalent europium ions has been investigated recently to monitor pressure-induced reversible phase transitions in NaEuGeO 4 germanate, 10 CaMoO 4 :Eu 3+ nanosheets, 11 La 2 Zr 2 O 7 :Eu 3+ (ref. 12) and CdS:Eu 3+ nanoparticles. 13 The pressure-dependent photoluminescence and Raman spectra of Eu(OH) 3 rods have been studied, 14 resulting in identification of two structural transitions caused by polyhedral tilts.…”