Yb3+/Tb3+ co-doped GdPO4 transparent magnetic glass-ceramics for spectral conversion

Up-conversion luminescence and optical thermometry properties of transparent glass ceramics containing CaF2:Yb3+/Er3+ nanocrystals

“…Recently, trivalent rare-earth (RE) ions doped up-conversion (UC) glass-ceramics (GC) have attracted significant interests in view of their potential application in fiber amplifiers, spectral conversion, temperature sensors, biological imaging, drug delivery carriers, DNA detection and solar cells [1][2][3][4][5][6][7]. In particular, transparent oxyfluoride GC have received considerable attention, as they have not only comparatively low phonon energies related to fluorides, but also high durability and mechanical stability ascribed to oxides [8,9].…”

Improved NIR emission from Tb3+, Yb3+ and Nd3+ co-doped La2O3 nano-phosphor

“…3 a Power dependent emission spectra of La 2 O 3 :1%Tb 3+ , 10%Yb 3 , 5%Nd 3+ and b its logarithmic dependent pump power versus integrated intensity of 544 nm and 820 nm emission emission. Nearly two photons are absorbed by Tb 3+ ion for green emission whereas only one photon is needed for 820 nm emission [16,17]. Tb 3+ ion gets excited via absorbing a 980 nm pump photon by excited-state absorption or energy transfer UC process through Yb 3+ sensitizer.…”

Wide‐range thermometry based on green up‐conversion luminescence of K3LuF6:Yb3+/Er3+ bulk oxyfluoride glass ceramics

“…High volume ratio favors their practical application and efficient up-conversion. Due to the smaller size of the crystallized K 3 LuF 6 nanocrystals compared to the wavelength of VIS-NIR light, light scattering from nanocrystals can be neglect and high transparency at VIS-NIR region is maintained in GC samples, 22,26 as depicted in Figure 1B. The former five main absorption peaks centered at 377, 487, 518, 542, and 651 nm are corresponding to the transitions from ground 4 I 15/2 level to excited 4 G 11/2 , 4 F 7/2 , 2 H 11/2 , 4 S 3/2 , and 4 F 9/2 states of Er 3+ , respectively.…”