Enhanced efficiency in quantum confined YBO3:Tb3+ nanophosphor

Optical characteristics of Tb-doped InBO3 nanocrystals

“…The lift time curve was measured at 237 nm excitation and 553 nm emission at room temperature. The decay time t is about 2.1 ms for InBO 3 :xTb (x ¼2 mol%) nanophosphor for the 5 D 4 -7 F 5 emission of Tb 3 þ , which is within the range of reported values 0.49-3.9 ms [15,25]. Fig.…”

“…The obtained emission curve of InBO 3 :Tb 3 þ consists of the f-f transition of Tb 3 þ . The visible luminescence of Tb 3 þ is due to the transitions 5 D 4 -7 F j (j ¼3, 4, 5, 6) [25]. There is an emission peak at 491 nm ( 5 D 4 -7 F 6 ) in the blue range and a strong peak at 553 nm ( 5 D 4 -7 F 5 ) in the green range.…”

Electronic structure and optical properties of TbPO4: Experiment and density functional theory calculations

“…The decay time extracted from the fitted curve is about 0.6 ms, which is shorter than that of commercial phosphor Zn 2 SiO 4 :0.04Mn 2+ [54]. It is within the range of reported values 0.49-3.9 ms [55,56]. Therefore, TbPO 4 can be considered as potential green phosphor.…”

Elaboration and characterization of transparent GdTaO4:Tb3+ thick films fabricated by sol–gel process

“…Then it will attract the electrons of O 2− more strongly, so that the electron cloud density of the O 2− ion decreases and it needs more energy for the electron transfer from O 2− to Ta 5+ . The red shift of the 4f-5d transition might be attributed to quantum confinement of Tb 3+ in the thick film, because the particle size of powder was over micron and then the peak of the Tb 4f-5d transition moves to lower energy [21].…”