A zero-thermal-quenching phosphor Sr3La(AlO)3(BO3)4: Dy3+ for near ultraviolet excitation white-LEDs

Deep-red-emitting phosphors of Mn4+-activated tantalite for high-sensitivity lifetime thermometry and security films

“…So, the exchange interaction is unlikely to control the CQ as a result of R c = 44.05 Å ≫ 5 Å. It should be noted that the basic electric multipolar interaction can be confirmed based on Dexter's theory: 51,52 …”

Crystal Structure, Photoluminescence, and “Abnormal” High Stability of Ca3Y(GaO)3(BO3)4: Dy3+/Sm3+/La3+ for n-UV wLEDs

“…Further, the phenomena of decreasing PL lifetimes of Dy following the increased content of Sm in CYGB: 4%Dy, y Sm under λ ex = 350 nm and monitored at 477 nm were observed (Figure c), where the curves could be fitted by double exponential eq 8: I false( t false) = I 1 exp ( prefix− t τ 1 ) + I 2 exp ( prefix− t τ 2 ) and the average lifetime (τ ave ) is calculated via eq 9: τ ave = A 1 τ 1 2 + A 2 τ 2 2 A 1 τ 1 + A 2 τ 2 . The I 1 and I 2 refer to the PL intensities at different times; τ 1 and τ 2 represent the decay lifetimes for the exponential components, respectively , 1. The τ ave of Dy at 477 nm gradually decreases from 0.73 to 0.19 ms along with increasing content of Sm from 0 to 12%.…”

Anti-thermal quenching phosphors based on the new phosphate host Ca3.6In3.6(PO4)6

“…Presently, there are few reports on anti-thermal quenching phosphors for single doping of Dy 3+ . 30 As for the newly discovered CIP compound, the presence of Ca 2+ with similar effective ionic radius and coordination environments to Dy 3+ offers a great possibility for the non-equivalent substitution to introduce more lattice defects and tune thermal stability.…”