Sensitive and Reliable Fluorescent Thermometer Based on a Red-Emitting LiMgHfO:Mn Phosphor.

Contactless fluorescent thermometers are rapidly gaining popularity due to their sensitivity and flexibility. However, the development of sensitive and reliable non-rare-earth-containing fluorescent thermometers remains a significant challenge. Here, a new rare-earth-free, red-emitting phosphor, LiMgHfO:Mn, was developed for temperature sensing.