Design, synthesis, crystal structure and luminescent properties of a new tantalum-phosphate K₃BiTaP₃O₁₃ with negligible concentration quenching and good thermostability

Abstract

This work reports a new host template, K3BiTaP3O13, for both Eu3+ and Tb3+ luminescence, providing a ‘dimensional obstacle’ to suppress negative concentration quenching with a high density of Eu3+ or Tb3+.

Recent progress in trivalent europium (Eu3+)-based inorganic phosphors for solid-state lighting: an overview

“…The initial observations, following the results of the reported phosphors, suggest KBTP as an apt host lattice for Eu 3+ and Tb 3+ . 174 2.5.5 Non-concentration-quenching phosphor Ca 3 Eu 2 B 4 O 12 . Eu 3+ -substituted Ca 3 Y 2 B 4 O 12 (CYBO) 175 red phosphor crystallizes in an orthorhombic structure with SG Pnma (no.…”

“…The initial observations, following the results of the reported phosphors, suggest KBTP as an apt host lattice for Eu 3+ and Tb 3+ . 174…”

High performance of broad excitation and narrow emission green phosphor NaAl11O17:Eu2+, Mn2+for backlight displays

“…5b. All the decay curves can be well fitted by a double exponential decay through a nonlinear fitting, 43,44 and the fluorescence lifetime values of Na 0.8 Al 11− y O 17 :0.20Eu 2+ , y Mn 2+ phosphors were calculated as 1.17, 0.91, 0.86, 0.82, 0.83, 0.83, 0.58, 0.44, 0.25, 0.14 and 0.11 μs for y = 0, 0.01, 0.03, 0.05, 0.07, 0.09, 0.10, 0.20, 0.30, 0.40 and 0.50, respectively. The average lifetime values of Eu 2+ significantly decreased to 10% of the initial value as the Mn 2+ content increases.…”

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

“…Phosphate is widely recognized as a critical matrix material for the production and enhancement of anti-thermal quenching phosphors due to its strong bonding networks, high structural rigidity, and extremely high acceptance for lattice defects and thermal disturbance. [6][7][8][9][10] Some anti-thermal quenching phosphate phosphors have been explored in recent years, such as Na 3−2x Sc 2 (PO 4 ) 3 :xEu 2+ , BaMgP 2 O 7 :Eu 2+ ,Mn 2+ , SrIn 2 (P 2 O 7 ): Dy 3+ , and Tm. 3,[11][12][13] Based on the previous reports, 8,[14][15][16] the processes for improving the thermal stability of phosphors by surface coating and phosphor-in-glass (PIG) techniques are cumbersome and not easy to perform.…”