Luminescent and scintillation properties of Bi3+ doped Y2SiO5 and Lu2SiO5 single crystalline films

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

“…In [14,15,19,24,58,78,95,102,109,113,119,202], the lower-energy emission band of Y3Ga5O12:Bi and Gd3Ga5O12:Bi [14], Y2Sn2O7:Bi [119], LaBO3:Bi [78,95], Y3Al5O12:Bi and LuAl5O12:Bi [15,19], YPO4:Bi The obtained data indicate that both the strong 3.45 eV emission and weak 3.30 eV emission arise from the triplet RES of Bi 3+ -related centers. It is not excluded that the 3.30 eV emission of Lu 2 SiO 5 :Bi arises from dimer {Bi 3+ -Bi 3+ } centers.…”

“…In many papers (see, e.g., [1,10,14,15,19,24,58,64,78,95,97,99,102,104,109,110,112,113,[119][120][121]128,154,158,159,201,202]), the lower-energy emission bands of Bi 3+ -doped compounds were ascribed to the {Bi 3+ -Bi 3+ } pairs or the clusters of Bi 3+ ions. The characteristics of this luminescence are presented in Table 4.…”

Thermoluminescent Properties of Cerium-Doped Lu2SO5 and Y2SiO5 Single Crystalline Films Scintillators Grown from PbO-B2O3 and Bi2O3 Fluxes

“…They were exposed to the 241 Am source (fluence rate of 1.7 × 10 5 cm −2 ·s −1 , energy at samples surface of 5.06 MeV) built-into the Risø DA-20 TL/OSL reader. The ranges of used alpha particles in LSO and YSO hosts, calculated with SRIM software [14] were 11.7 µm and 13.4 µm, respectively. The thicknesses of SCFs in the investigated samples (see Table 1, column 6) were higher than the estimated ranges of alpha particles in these materials for all samples except for sample 3 (SCF's thickness 6.1 µm).…”

“…The continuous absorption of YSO-and LSO-based SCF samples throughout the whole spectrum up to 800 nm can be caused by the Pb 2+ →Pb 4+ charge transfer transitions [17]. with SRIM software [14] were 11.7 μm and 13.4 μm, respectively. The thicknesses of SCFs in the investigated samples (see Table 1, column 6) were higher than the estimated ranges of alpha particles in these materials for all samples except for sample 3 (SCF's thickness 6.1 μm).…”

“…On the one hand, the large lead contamination of LSO:Ce and YSO:Ce SCFs in the 0.02-0.19 at.% range (see Table 1) can lead also to the creation of Ce 4+ -and Pb 2+ -based centers with local charge and volume compensation, which can also be involved in the TL processes in these SCFs as emission centers [8]. On the other hand, in LSO:Ce and YSO:Ce SCFs grown by the LPE method from Bi 2 O 3 flux, mainly the Ce 3+ valence state is realized in these SCFs in the case of the incorporation of isovalent Bi 3+ ions as flux agent [8,14,15]. Therefore, in these SCFs we can mainly expect the formation of Bi 3+and Ce 3+ -based centers [8,15].…”