Synthesis and tunable emission properties of CaZr(PO4)2:Mn2+, Sm3+ phosphor

Bi3+ and Sm3+ co-doped Cs2AgInCl6 perovskite microcrystals with co-enhancement of fluorescence emission

“…2(d), which are assigned to Sm 3+ f-f electronic transitions, 4 G 5/2 -6 H 5/2 (B567 nm) and 4 G 5/2 -6 H 7/2 (B600 nm), repectively. [39][40][41] S5 and S6 (ESI †) further observes that the 567 nm and 600 nm PL peaks arise from Sm 3+ dopants. As shown in Fig.…”

“…2(c) shows fluorescence emission from 400 nm to 700 nm of Cs 2 AgInCl 6 :Sm phosphors with various doping concentrations of Sm 3+ under excitation 370 nm, including two obvious characteristic peaks caused by the 4 G 5/2 -6 H 5/2 (B567 nm) and 4 G 5/2 -6 H 7/2 (B600 nm) transitions of Sm 3+ ions, respectively. [39][40][41] At the same time, emission intensities show different responses to the Sm 3+ ion concentration as the strongest luminescence was found in the sample with 20% samarium(III) acetate hydrate addition. But the improvement is very limited because the f-f transition of Sm 3+ is parity forbidden.…”

Syntheses, Crystal Structures and Luminescent Properties of Two New Heterometallic Phosphates: Sn2Ge(PO4)2(OH)2 and Sn2Mn(PO4)2

“…Metal phosphates have been paid much attention in the past few decades because of their diverse structures and the variety of applications such as ferroelectric, magnetism, ionic conductors, solid electrolyte batteries, and optical function, especially for luminescence . Currently, a number of the bimetallic phosphate phosphors have been synthesized by the conventional high‐temperature solid‐state method, such as SrZn 2 (PO 4 ) 2 :Tb 3+ , BaCdP 2 O 7 :Eu 2+ , Ca 9 Y(PO 4 ) 7 :Sm 3+ , CaZr(PO 4 ) 2 :Mn 2+ , Sm 3+ , Sr 8 CaSc(PO 4 ) 7 :Eu 2+ , Ce 3+ , Mn 2+ , Ca 9 Ce(PO 4 ) 7 :Mn 2+ , Tb 3+ , Ca 8 ZnLa(PO 4 ) 7 :Eu 2+ ,Mn 2+ , M II M’ IV (PO 4 ) 2 (M II =Cd, Ca, Sr, Pb, and Ba; M’ IV =Ge, Ti, Mo, Sn, Hf, Zr, Pu, Np, U, and Th), and they show high thermal stability and strong luminescence intensity. Although this method is more convenient to prepare compounds with high thermal stability, compared with other methods, which requires high reaction temperature, long reaction time and easily form glassy products .…”

“…Currently, a number of the bimetallic phosphate phosphors have been synthesized by the conventional high‐temperature solid‐state method, such as SrZn 2 (PO 4 ) 2 :Tb 3+ , BaCdP 2 O 7 :Eu 2+ , Ca 9 Y(PO 4 ) 7 :Sm 3+ , CaZr(PO 4 ) 2 :Mn 2+ , Sm 3+ , Sr 8 CaSc(PO 4 ) 7 :Eu 2+ , Ce 3+ , Mn 2+ , Ca 9 Ce(PO 4 ) 7 :Mn 2+ , Tb 3+ , Ca 8 ZnLa(PO 4 ) 7 :Eu 2+ ,Mn 2+ , M II M’ IV (PO 4 ) 2 (M II =Cd, Ca, Sr, Pb, and Ba; M’ IV =Ge, Ti, Mo, Sn, Hf, Zr, Pu, Np, U, and Th), and they show high thermal stability and strong luminescence intensity. Although this method is more convenient to prepare compounds with high thermal stability, compared with other methods, which requires high reaction temperature, long reaction time and easily form glassy products . To date, a new family of bimetallic phosphates have been discovered by a facile solvothermal method, such as [Cu(H 2 O) 2 (OH)] 2 Ge(PO 4 ) 2 , CdGe(OH) 3 PO 4 , Mn 4 (H 2 O) 4 [Ge(OH) 2 (HPO 4 ) 2 (PO 4 ) 2 ], and M II 4 (H 2 O) 4 [Ge(OH) 2 (HPO 4 ) 2 (PO 4 ) 2 ] (M II =Fe, Co), which have also attracted great attentions owing to their varying structural characteristics or interesting magnetic properties.…”