Wydział Chemii

Yuka Abe

Maja Szymczak

Justyna Zeler

Rafał Szukiewicz

Łukasz Marciniak

2026

Laser and Photonics Reviews

e71411/1-e71411/15

10.1002/lpor.71411

Naukowa

Angielski

Artykuł

The development of advanced luminescent thermometric materials requires the identification of novel mechanisms capable of inducing temperature-dependent changes in the spectroscopic properties of phosphors. In response to this need, the present work demonstrates a cooperative effect involving the thermalization of the ⁴T₁(⁴G) -level components of Mn²⁺ ions and trap → ⁴T₁(⁴G) energy transfer in Ca₁₉Ce(PO₄)₁₄:Mn²⁺. This interplay results in a simultaneous enhancement of the ⁴T₁(⁴G) → ⁶A₁(⁶S) emission band intensity accompanied by a blue shift of its spectral position with increasing temperature. This phenomenon can be effectively utilized for temperature sensing and imaging applications. Furthermore, the distinct thermal responses of Ce³⁺ and Mn²⁺ luminescence enable not only the determination of the luminescence intensity ratio (S_R = 4.5% K⁻¹), but also the development of a luminescent indicator for detecting the crossing of a threshold temperature using the RGB channels of a standard camera. Importantly, the activation temperature of the signal in the G channel, which is governed by the Mn²⁺ ion concentration, provides a means to tune the threshold temperature of the sensor. This allows for precise adjustment of the sensor performance to meet specific application requirements.

luminescence thermometry, Mn2+, ratiometric approach, RGB

http://dx.doi.org/10.1002/lpor.71411

https://onlinelibrary.wiley.com/journal/17590884