Photoluminescence characteristics of Sm3+ doped Na13Sr2Ta2(PO4)9 as new orange-red emitting phosphors

A novel reddish‐orange emitting NaSrBiTeO6:Sm3+ phosphor with high moisture resistance and thermostability for horticultural light emitting diode applications

“… $$$$\begin{equation}\eta \ = \ \frac{{\smallint {L_S}}}{{\smallint {E_R} - \smallint {E_S}}},\end{equation}$$$$where L S is the emission spectrum of the NSBTO:2 mol%Sm 3+ phosphor, E S and E R refer to the excitation spectra of the phosphor and the BaSO 4 reference material. IQE of the NSBTO:2 mol%Sm 3+ materials under an excitation of 404 nm reached 32.58%, which is slightly higher than that reported, such as Na 13 Sr 1.82 Ta 2 (PO 4 ) 9 :18 mol%Sm 3+ (31.29%), Ca 2 LaNbO 6 :5 mol%Sm 3+ (30.41%), and Bi 4 Sr 3 Te 5 O 19 :2 mol%Sm 3+ (17.23%) 68–70 …”

“…IQE of the NSBTO:2 mol%Sm 3+ materials under an excitation of 404 nm reached 32.58%, which is slightly higher than that reported, such as Na 13 Sr 1.82 Ta 2 (PO 4 ) 9 :18 mol%Sm 3+ (31.29%), Ca 2 LaNbO 6 :5 mol%Sm 3+ (30.41%), and Bi 4 Sr 3 Te 5 O 19 :2 mol%Sm 3+ (17.23%). [68][69][70] Based on the above admirable luminescence properties, the practical application for the phosphors was evaluated. As depicted in Figure 13A, the NSBTO:2 mol%Sm 3+ phosphor was coated on a 404 nm NUV chip to obtain the single-color emitting LED.…”

Novel Sm3+-doped La3Ga5MO14 (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

“…Furthermore, compared with other phosphors, the samples demonstrated higher color purity, such as Mg 3 P 2 O 8 :0.01Sm 3+ (85.69%) 45 and Na 13 Sr 1.82 Ta 2 (PO 4 ) 9 :0.18Sm 3+ (92%). 46…”

“…Furthermore, compared with other phosphors, the samples demonstrated higher color purity, such as Mg 3 P 2 O 8 :0.01Sm 3+ (85.69%) 45 and Na 13 Sr 1.82 Ta 2 (PO 4 ) 9 :0.18Sm 3+ (92%). 46 The correlated color temperature (CCT) was also important for phosphor application. The CCT can be obtained from the following eqn (9) 47…”