Study on the Photoluminescence Properties and Optical Temperature Sensing Characteristics of BaCaLa8(SiO4)6O2∶Eu3+Phosphors
BaCaLa8(SiO4)6O2∶Eu3+phosphor was synthesized,and its photoluminescence excitation and emission spectra were investigated to study its photoluminescent performance.In the lattice of BaCaLa8(SiO4)6O2,the Eu3+ions may occupy two different sites,which can be efficiently excited by the near-ultraviolet(n-UV)or blue light.Under the excitation of 392 nm n-UV light,the prepared phosphors showed red emission with a peak wavelength of 612 nm,indicating their application potential in solid-state lighting.The thermal performance of the phosphor with the optimal doping concentration was tested.At 423 K,the sample's photoluminescence intensity was 62.0％of that at 298 K,showing temperature-sensitive characteristics.The maximum relative temperature sensing sensitivity was 1.163％K1,revealing its potential application in the field of optical temperature sensing.
PhosphorsPhotoluminescence propertiesOptical temperature sensing
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