Multifunctional phosphor developed for white LED lighting and optical temperature measurement

https://phys.org/news/2024-09-multifunctional-phosphor-white-optical-thermometry.html

"safer LEDs, without yellow phosphors, inadequate red light affecting color rendering, blue light exposure hazard... energy-efficient... Bi3+/Eu3+ co-doped Ca2Ta2O7 (CTO:Bi3+/Eu3+) phosphors with tunable color emission from green to reddish-orange... enhances white LED, optical thermometer performance... high color rendering index... near-UV pumped white LED devices, visual thermometers, high-temperature safety markings"