Luminescent properties of Eu3+ and Tb3+ in KY3F10

Color tunable phosphorescence in KY3F10:Tb3+ for x-ray or cathode-ray tubes

“…The lifetimes of 5 D 3 ͑ 1 ͒ are calculated by Eq. ͑7͒ and expressed as 1 =1/ ͑Ax 2 + Bx + C͒, where C is the reciprocal of 10 . The calculated curve presents a good match with the experimental data, as shown in Fig.…”

“…10 In order to analyze the energy transfer rate and efficiency as a function of Tb 3+ concentration, the fluorescence lifetimes of 5 D 3 ͑ 1 ͒ and 5 D 4 ͑ 2 ͒ for different Tb 3+ concentrations are measured upon 355 nm pulsed laser excitation, as represented in Fig. 6.…”

“…The fluorescence mechanism of Tb 3+ doped KY 3 F 10 has been investigated with a good concentration and temperature quenching properties. 10 We found that the KY 3 F 10 :Tb 3+ phosphor exhibits good long persistent phosphorescence after irradiation with x-ray or cathode-ray tubes and can be applied for the radar tubes. Different from the traditional phosphors for radar tubes, the KY 3 F 10 :Tb 3+ phosphor emits sharp lines with higher color purity and tunable emitting colors from blue to green by controlling Tb 3+ concentrations.…”

Interionic cross relaxation and tunable color luminescence in KY3F10:Tb3+ nano/microcrystals synthesized by hydrothermal approach

“…The quantitative theories for the non-radiative energy transfers have been given by Fö rster [11] and Dexter [12,13]. Furthermore, many efforts have been made to establish the theoretical model for describing the interionic interaction [14][15][16][17][18][19][20]. Lots of research concerning the energy transfer in solids has been carried out in order to develop novel luminescent materials for white light emitting diode, long lasting phosphors and so on [21][22][23][24].…”

Well-dispersed KRE3F10(RE = Sm–Lu, Y) nanocrystals: solvothermal synthesis and luminescence properties

“…[25][26][27] It has been reported that Ln 3+ doped KRE 3 F 10 can be applied as laser materials 28,29 and long persistent phosphorescence materials. 30 Despite the large number of studies on KY 3 F 10 single crystals or larger particles, [31][32][33][34] reports on the corresponding colloidal NCs are very limited. The main reason rests with the rapid precipitation reaction between rare earth salts and KF/KBF 4 in aqueous or polyol solutions that have been generally adopted in previous studies.…”