Luminescence Enhancement of K₂LiAlF₆:Mn⁴⁺ Phosphors by Zn²⁺-Mediated Charge Compensation for Fast-Response Backlighting Applications

Optical enhancement of highly efficient organic–inorganic oxyfluoride red phosphors via the cation co-doping strategy

“…4a–d, respectively. The absorption efficiency (AE), IQE and EQE can be calculated using eqn (6)–(8): 4,5,49 EQE = AE × IQEwhere E ( λ )/ hν , r ( λ )/ hν and p ( λ )/ hν are the number of photons in the excitation, reflectance, and emission spectra of the luminescent materials, respectively.…”

Polymorphisms in M2+AlF5(H2O)7 (M2+ = Fe2+, Co2+, or Ni2+): Syntheses, Crystal Structures, and Characterization of New Mixed Metal Fluoride Hydrates

“…Mixed metal fluoride materials have captured considerable attention due to their varied and intriguing physical properties [1], including their multiferroic behavior (BaMnF 4 [2][3][4], BaCoF 4 [5][6][7], BaNiF 4 [8,9], K 3 Fe 5 F 15 [10][11][12], K 3 Cr 2 Fe 3 F 15 [13,14], and Pb 5 Cr 3 F 19 [15,16]), non-linear optical (NLO) behavior (BaMgF 4 [17,18], KNa 2 ZrF 7 [19], and CsNaTaF 7 [20]), and luminescent features (Yb 3+ /Er 3+ -co-doped NaYF 4 [21], Mn 4+ -doped K 2 LiAlF 6 [22], and Tb 3+ -doped Na 5 Lu 9 F 32 [23]). Despite the allure of these properties, research on mixed metal fluoride materials has been limited compared to oxide materials, primarily due to challenges in their synthesis.…”