Luminescent properties of Yb-doped under VUV excitation

Growth of Yb-doped Y2O3, Sc2O3, and Lu2O3 single crystals by the micro-pulling-down technique and their optical and scintillation characterization

“…However, among these three oxides, emission of Lu 2 O 3 was shifted from 390 nm (for undoped material) [23,27,28] to 350 nm (for Yb-doped one). Therefore, we conclude that emission at 350 nm wavelength discovered here overlapped both CT-2 F 7/2 transition and host emission [16,[18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Furthermore, according to previous reports [29,30], CT-2 F 5/2 transition must be observed around 400-750 nm (depending on material) [30].…”

“…Emission derived from the charge transfer state CT-2 F 7/2 transition was observed around 350 nm for all the crystals discussed here. According to the previous communications [18][19][20][21][22][23][24][25][26][27][28], undoped Y 2 O 3 , Sc 2 O 3 , and Lu 2 O 3 emit at 350-380 nm, 340 nm, and 390 nm, respectively, even if ascription of the emission is not identified yet. Emission regions of Yb-doped sesqui-oxides are similar to those of undoped ones.…”