Eu³⁺-based luminescence ratiometric thermometry

Abstract

We show that more sensitive luminescence ratiometric thermometry can be achieved using a hypersensitive Eu3+ transition.

Enhanced Sensitivity for Tm3+/Er3+‐Based Thermometer Through Dual‐Wavelength Excitation

“…[19][20][21] Up to now, most of the ratiometric thermometers are investigated based on thermally coupled levels (TCL), whose relative sensitivity is hardly further enhanced due to the restriction of the energy gap (200-2000 cm À1 ). [22][23][24] In contrast, relative sensitivity based on nonthermally coupled levels (NTCL) is independent of energy gap between them, because their temperaturesensing behaviors are dominated by thermal quenching instead of the Boltzmann law. [25][26][27] As a result, temperature-sensing behaviors based on NTCL are expected to achieve higher sensitivity.…”