High emission cross-section YVO4:Nd nanocrystalline glass prepared by high-silica porous glass

Nanocrystalline Yb:YAG-Doped Silica Glass with Good Transmittance and Significant Spectral Performance Enhancements

“…The variability of the fluorescence lifetime was related to the microlocal environment, in which the Yb 3+ ions were located [52]. According to Ramachari et al, this was mainly due to the small distance between the RE ions in the sample and the enhanced interactions [53,54]. Based on the fact that the ionic radii of Y 3+ and Yb 3+ are very similar, some Yb 3+ ions enter the crystalline phase and replace the Y 3+ ions [52].…”

“…In addition, it was possible that the doping of the Ba 2+ ions resulted in a distribution of Yb 3+ ions partly around the YAG and partly around the Al-O and Si-O. It was observed that the fluorescence lifetime of the Yb 3+ ions in the YABS samples was lower than that of the YAS samples, which may have been due to a portion of the Yb 3+ ions entering the YAG crystal and the crystal coordination field affecting the fluorescence lifetime [53,55].…”

Luminescence Behavior of GdVO4: Tb Nanocrystals in Silica Glass-Ceramics

“…Due to their composition having more than 97% SiO 2 and distributed interconnected nanopores, nano-porous silica glass (NPSG) has been researched. Lots of works have reported that NPSG can be used in many fields after doping and sintering due to its ability to effectively disperse rare-earth ions [11,12]. It is not difficult to imagine if luminescence nanocrystals can be grown in the connected nanopores, the size of the nanocrystals will be limited, and a transparent luminescence material could be obtained.…”

“…The transparent glass ceramics doped with luminescent ions can effectively combine crystal and glass with many excellent properties, which makes it have many applications in the fields of luminescent, laser and nonlinear optics, and has been favored by many scholars in recent years [13][14][15][16]. Therefore, if we combine the excellent properties of GdVO 4 : Tb and silica glass together to synthesize a transparent glass ceramics, then this transparent luminescence glass-ceramics not only can be applicable to phosphor [17,18], but also to laser, such as laser medium materials [12,19], fiber core of microstructure fiber, and high-power fiber [20][21][22].…”