Structure and thermal stability of novel fluorophosphate glasses

Tetrahedrally coordinated rigid crystal structure enables partial self-reduction of mixed-valence europium for optical thermometric application

“…56,58 The absorption peak at 562 cm −1 was ascribed to the P–O–B bending vibration mode between PO 4 and BO 4 . 59,60 The phase purity of the CaBPO 5 : x % Eu ( x = 0–0.7) phosphors with different Eu doping concentrations were checked by powder X-ray diffraction (XRD) measurements, which exhibited intense peaks that were consistent with the simulation pattern of CaBPO 5 (ICSD-77518) without any observed impurity (Fig. 1c).…”

Tunable and white light generation in lanthanide doped novel fluorophosphate glasses

“…Therefore, this glass composition could be used in the fiber drawing process to decrease the optical scattering of optical fibers. Moreover, fluorophosphate glasses with composition also show strong thermal stability around 230 o C [80].…”

Microstructure and up-conversion luminescence properties of Er3+ and Yb3+ ions co-doped oxyfluoride silicates

“…Although we did not measure log-log plots of the upconversion luminescence intensity as a function of the excitation intensity to determine the slopes for each band, a plenty of experiments reported in the literatures [18][19][20][21][22][23][24] verified that there are two photons participating in the up-conversion process for the green and red emissions, while the violet emission involves three photons because the energy of two photons is not enough to excite the violet emission.…”