Efficient upconversion and downshifting luminescence of CaIn2O4: Yb3+/Tm3+/RE3+ (RE=Er/Ho) phosphor: Temperature sensing performance in the visible and near-infrared range

Anti-thermal quenching of luminescence in Y2W3O12:Yb3+/RE3+ (RE = Er/Ho/Tm) and its temperature sensing application

“…4–8 In particular, an optical thermometer based on RE 3+ ion luminescence is used for non-contact temperature measurement in strong electromagnetic interference, highly corrosive environment in vivo , which possesses quick response, high spatial resolution and contact-less readout rates. 9–12 Generally, the upconversion (UC) and downshift (DS) luminescence radiations of RE 3+ ions could also be used to develop an optical thermometer. However, the UC and DS emissions of RE 3+ ions almost emerge from the thermal quenching of luminescence at a high temperature range, which decreases the sensitivity of the optical thermometer.…”

Engineering Visible to Near-Infrared Luminescence through a Selective Doping Strategy for High-Performance Temperature Sensing

“…The necessity for accurate temperature measurement at the nano/microscale in challenging environments has driven the rapid evolution of various noncontact thermometric methods with remote sensing capabilities. , Among these, luminescence thermometry has garnered considerable interest owing to its rapid response, remote operability, superior spatial resolution, and immunity to electromagnetic noise. − Particularly, the self-calibrated ratiometric technique has become dominant, leveraging the luminescence intensity ratio (LIR) of two emission bands as the thermometric parameter, which offers defense against external disturbances. − However, despite its promising features, this approach faces inherent limitations, including low relative sensitivity and significant uncertainties arising from luminescence quenching at elevated temperatures, thereby hindering its widespread application in practical technological applications.…”