Dual-mode optical thermometry of Sr2YNbO6:Bi3+,Eu3+ phosphors designed by response surface methodology

Response surface methodology (RSM) method can directly obtain optimal doping content of co-doped phosphors through simulation. In this paper, the optimal sample (OPT-SYNO) of Sr2YNbO6:Bi3+,Eu3+ phosphors was predicted by RSM. The structure and luminescent properties of Sr2YNbO6:Bi3+,Eu3+ phosphors were explored by Xray diffraction and photoluminescence. And the temperature-dependent emission spectra of OPT-SYNO indicate that OPT-SYNO can realize the dual-mode optical thermometry (fluorescence intensity ratio and color coordinate) under different excitation. Under 338 nm excitation, the maximum values of SR and SA are 0.898 %K-1 (453 K) and 4.285 %KK (-1) (573 K), respectively. The above results show that Sr2YNbO6:Bi3+,Eu3+ has potential application in the field of optical temperature measurement.

Automated summary

The optimal doping content of co-doped phosphors was directly obtained through simulation using the response surface methodology (RSM) method. In this study, the optimal sample (OPT-SYNO) of Sr2YNbO6:Bi3+,Eu3+ phosphors was predicted using RSM. The structure and luminescent properties of Sr2YNbO6:Bi3+,Eu3+ phosphors were examined through X-ray diffraction and photoluminescence. The temperature-dependent emission spectra of OPT-SYNO showed that it can achieve dual-mode optical thermometry (fluorescence intensity ratio and color coordinate) under different excitations. Under 338 nm excitation, the maximum values of SR and SA were 0.898 %K-1 (453 K) and 4.285 %KK (-1) (573 K), respectively. These results indicate the potential application of Sr2YNbO6:Bi3+,Eu3+ in optical temperature measurement.