Photoluminescence properties of KSrPO4:Sm3+ phosphor for SSL applications

The Trivalent Rare‐Earth Dopant in the KBaPO4 and KSrPO4 Compounds: An Atomistic Simulation Study

“…In an Sm 3+ emission spectrum, the 4 G 5/2 – 6 H 5/2 transition can be seen to be a magnetic dipole transition, although there is a prominent role played by the electric dipole mechanism in the 4 G 5/2 – 6 H 7/2 transitions. [ 14 ] In Sm 3+ ‐doped KBaPO 4 , under 400 nm excitation, has its most intense emission at 594 nm correspondent 4 G 5/2 – 6 H 7/2 transition, [ 9 ] which may be related to the proximity of the defects of incorporation of Sm with to charge compensation mechanism (). The results also reveal that Pr 3+ ions are the most stable dopant for the doping process in KMPO 4 compounds.…”

“…As has been reported, luminescence in the KBaPO 4 and KSrPO 4 phosphates is observed when doped by the RE ions Tb, [7][8][9][10] Dy, [11,12] Ce, [13] Sm, [9,[14][15][16] and Pr, [2] and information related to the substitution site, the charge compensation mechanism, and the more favorable doping process is important. The objective of the investigation of the incorporation of these dopants in KMPO 4 compounds is to provide a fast and efficient method for identifying host-dopant systems with potential in optical materials.…”

“…This facilitates the determination of the synthesis-doping strategy of the KMPO 4 (M ¼ Ba and Sr) compound in experimental works. X-ray diffraction (XRD) results [7][8][9][10][11][12][13][14][15][16] indicate that no RE ion with concentrations below 7 mol% used in our study leads to traces of impure phases in the KMPO 4 compounds.…”

“…The experimental literature reports that KMPO 4 (M = Ba and Sr) can be applied as LEDs when doped with different RE ions such as Tb, [ 7–10 ] Dy, [ 11,12 ] Ce, [ 13 ] Sm, [ 9,14–16 ] and Pr, [ 2 ] and also with three and two activators Ce 3+ –Tb 3+ –Yb 3+ , Tb 3+ –Yb 3+ , Eu 2+ –Yb 3+ , [ 3 ] and Eu 2+ –Pr 3+ [ 2 ] for application in solar cells. Photoluminescence results reveal that KBaPO 4 [ 9 ] and KSrPO 4 [ 17 ] doped with Eu 2+ , Tb 3+ , and Sm 3+ emit in blue, green, and red‐orange light, respectively.…”

“…[4,5] These compounds are isostructural with β-K 2 SO 4 , [6] where the difference between them is that the latter has two potassium sites and in the first, one of these sites is replaced by Ba or Sr atoms. [1] The experimental literature reports that KMPO 4 (M ¼ Ba and Sr) can be applied as LEDs when doped with different RE ions such as Tb, [7][8][9][10] Dy, [11,12] Ce, [13] Sm, [9,[14][15][16] and Pr, [2] and also with three and two activators Ce 3þ -Tb 3þ -Yb 3þ , Tb 3þ -Yb 3þ , Eu 2þ -Yb 3þ , [3] and Eu 2þ -Pr 3þ [2] for application in solar cells. Photoluminescence results reveal that KBaPO 4 [9] and KSrPO 4 [17] doped with Eu 2þ , Tb 3þ , and Sm 3þ emit in blue, green, and red-orange light, respectively.…”