Effects of growth atmosphere and annealing on luminescence efficiency of YAP:Ce crystal

Consequences of Ca Codoping in YAlO3:Ce Single Crystals

“…Moreover, considering the general trends of the position of Ce 3+ levels (end state of the charge transfer (CT) transition of Ce 4+ ) in the band gap of oxides, the detected Ca‐induced UV absorption is very likely related to the formation of Ce 4+ ions and to their CT transition. This interpretation is also supported by results obtained on YAP:Ce crystals treated in either oxidizing or reducing atmosphere . Oxygen vacancy formation is expected in the presence of isolated Ca 2+ ions, possibly causing the weak absorptions in the visible detected exclusively for the largest calcium content.…”

The influence of Sc/Lu ratio on the phase transformation and luminescence of cerium-doped lutetium scandium orthoborate solid solutions

“…Due to the longer Lu-O distance and larger Lu 3+ ionic radius in calcite phase of LuBO 3 , its D(A) is smaller than that of ScBO 3 . It also means that lowest energy Ce 3+ 5d → 4f emission bands of ScBO 3 have redshift comparing to that of calcite phase of LuBO 3 . Therefore, it is reasonable to assume that, for Lu 1−x Sc x Ce 0.005 BO 3 solid solution, with the increase of Sc 3+ content, the lowest 5d excitation shifts to lower energies and in turn there should be a continuous redshift of the lowest energy Ce 3+ 5d → 4f emission band.…”

“…Nowadays, many researchers are devoting to researching and optimizing the existing scintillation crystals [1][2][3][4], and also developing new scintillators such as Y 2 Si 2 O 7 :Ce, Gd 2 Si 2 O 7 :Ce and MgWO 4 [5][6][7]. Nevertheless, there are still many novel crystals deserved to be developed.…”

Luminescence characteristics of Lu0.8Sc0.2BO3:RE3+ (RE=Eu, Tb) polycrystalline powders

“…high density, high light output, fast response time) and chemical stability. Hence, many researchers are devoting to improving or optimizing the existing scintillation crystals [1][2][3][4][5], and also developing new scintillators such as Y 2 Si 2 O 7 :Ce, Gd 2 Si 2 O 7 :Ce, Lu 2 Si 2 O 7 , MgWO 4 and so on [6][7][8][9][10]. Nevertheless, there are still many novel crystals deserved to be developed.…”