Multifunctional phosphor developed for white LED lighting and optical thermometry

Tunable color emission and application showcase. Credit: Frontiers of Optoelectronics (2024). DOI: 10.1007/s12200-024-00134-2 In the realm of lighting and temperature measurement, advancements in material science are paving the way for significant improvements in technology and safety. Traditional methods, which combine yellow phosphors with blue chips in LEDs, have limitations such as inadequate red light components

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Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED” was published in Frontiers of Optoelectronics on Sept. 4, 2024.

The team’s work on Bi3+/Eu3+ co-doped Ca2Ta2O7 (CTO:Bi3+/Eu3+) phosphors with tunable color emission from green to reddish-orange demonstrates how adjustable color emission can be achieved, enhancing the performance of white LEDs and paving the way for optical thermometers.

The thermochromism, stability, and repeatability of these phosphors make them particularly noteworthy for applications in visual thermometers or high-temperature safety markings.

The construction of a white LED device with a high rendering index using the CTO:0.04Bi3+/0.16Eu3+ underscores its potential application in near-UV pumped white LED devices.

The discovery of this multifunctional material signifies the potential to achieve more energy-efficient, environmentally friendly, and safer lighting solutions, while also offering potential applications in visual thermometers and high-temperature safety markings.

More information:
Jingjing Ru et al, Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED, Frontiers of Optoelectronics (2024). DOI: 10.1007/s12200-024-00134-2

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Multifunctional phosphor developed for white LED lighting and optical thermometry (2024, September 13)
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