首页|Synergistic use of Raman and photoluminescence signals for optical thermometry with large temperature sensitivity
Synergistic use of Raman and photoluminescence signals for optical thermometry with large temperature sensitivity
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
In this work we demonstrate that large temperature sensitivity over a wider temperature range is possible by adopting the dual use of Raman and photoluminescence (PL) signals emitted by rare-earth doped crystalline phosphors when excited by a suitable laser light. We define Raman-PL-intensity ratio (RPIR) as an alternative thermometric parameter to define temperature sensitivity and exploited the contrasting effect of temperature on the intensities of the PL and Raman lines of a Eu3+-doped BaTiO3 ferroelectric phosphor and achieved large temperature tuning of color (red <-> blue/green) and large relative temperature sensitivities in a wide temperature range: +6.4 %K-1 at 65 K, +2.4 %K-1 at 303 K. Our strategy offers greater flexibility for the design of phosphor systems for optical thermometry with high sensitivity.
NSTL
Elsevier
