NaLaMgWO6:Mn4+/Pr3+/Bi3+ bifunctional phosphors for optical thermometer and plant growth illumination matching phytochrome P and P

An Er3+ doped Ba2MgWO6 double perovskite: a phosphor for low-temperature thermometry

“…BMW was also demonstrated as a promising host for Eu 3+ with S r = 1.2% K −1 at 120 K from 77 to 200 K. 18 For further comparison, some outstanding materials doped with different rare earth elements operating at low temperature are recalled, for instance: La 2 MgTiO 6 :V 5+ , Cr 3+ (1.96% K −1 at 165 K), 16 La 2 MgTiO 6 :Pr 3+ (1.28% K −1 at 350 K), 52 bismuth silicate glass Bi 2 SiO 5 @SiO 2 doped with Tm 3+ /Yb 3+ (S r = 1.95% K −1 at 300 K) 60 and doped with Nd 3+ (S r = 1.43% K −1 at 300 K), 71 LaGaO 3 :Nd 3+ (S r = 1.8% K −1 at 280 K), 72 and SrGdF 7 :Tm 3+ /Yb 3+ (S r = 1.97% K −1 at 353 K). 73 Moreover, the transition metal ion (TM 3+ )-doped phosphors have been recently demonstrated to be particularly effective and flexible ratiometric thermometers with high relative sensitivity such as CaHfO 3 :Cr 3+ (S r = 1.89% K −1 at 353 K), 74 Bi 2 Al 4 O 9 :Cr 3+ (S r = 1.24% K −1 at 290 K), 75 Gd 2 ZnTiO 6 :Mn 4+ ,Bi 3+ (S r = 2.4% K −1 at 423 K), 76 NaLaMgWO 6 : Mn 4+ ,Pr 3+ ,Bi 3+ (S r = 3.39% K −1 at 573 K), 77 La 2 MgGeO 6 :Mn 4+ , Bi 3+ (S r = 3.03% K −1 at 383 K), 78 etc.…”

A novel Mn4+‐activated far‐red Sr2MgWO6 phosphor: synthesis, luminescence enhancement, and application prospect

“…This not only reduces the cost of crop cultivation, but also significantly improves the yield and quality of crops. Finding or designing various phosphors that match the LED requirements of plant cultivation therefore has long-term implications for indoor plant culture [3].…”

Rare-earth and transition metal ion single-/co-doped double-perovskite tantalate phosphors: Validation of suitability for versatile applications

“…Moreover, Ln 3+ (e.g., Eu 3+ , Sm 3+ , and Pr 3+ ) and Mn 4+ single/co-doped phosphors have been applied in other fields including solar cells, drug delivery, field emission displays, lasers, anti-counterfeiting films, batteries, LIR thermometry, luminescence lifetime thermometry, and pressure-dependent manometry [18][19][20][21][22][23][24][25][26][27][28][29][30]. The Ca2InTaO6 (CITO) with the double-perovskite (A2BB'O6) structure provided highly distorted [InO6] octahedron for Ln 3+ and [TaO6] octahedron for Mn 4+ , which can lead to good luminescence performances.…”