TY - JOUR

T1 - Multimode optical thermometry using CaWO4 emission band

AU - Колесников, Илья Евгеньевич

AU - Мамонова, Дарья Владимировна

AU - Курочкин, Михаил Алексеевич

AU - Медведев, Василий Андреевич

AU - Kolesnikov, Evgenii Yu

PY - 2024/12/5

Y1 - 2024/12/5

N2 - Optical thermometry has emerged as a promising technique for remote temperature sensing in plenty of applications, where traditional contact methods are useless. To date, many sensing strategies have been developed and realized, but most of them are based on monitoring of the single temperature dependent parameter. Here, we report simple dual-center materials (Eu3+ and Sm3+-doped CaWO4) that provide multimode optical thermometry. In addition to standard ratiometric approach based on intensity ratio between host and lanthanide emission bands, spectral position and bandwidth of CaWO4 emission band were successfully utilized as temperature sensitive parameters for the first time. It was shown that multimode sensing leads to broadening of temperature working range and enhances reliability of thermal sensing. The best thermometric characteristics were achieved for CaWO4:Sm3+ sample: Sr = 1.29 % K−1@273–673 K and δT = 0.15 K.

AB - Optical thermometry has emerged as a promising technique for remote temperature sensing in plenty of applications, where traditional contact methods are useless. To date, many sensing strategies have been developed and realized, but most of them are based on monitoring of the single temperature dependent parameter. Here, we report simple dual-center materials (Eu3+ and Sm3+-doped CaWO4) that provide multimode optical thermometry. In addition to standard ratiometric approach based on intensity ratio between host and lanthanide emission bands, spectral position and bandwidth of CaWO4 emission band were successfully utilized as temperature sensitive parameters for the first time. It was shown that multimode sensing leads to broadening of temperature working range and enhances reliability of thermal sensing. The best thermometric characteristics were achieved for CaWO4:Sm3+ sample: Sr = 1.29 % K−1@273–673 K and δT = 0.15 K.

KW - Host emission

KW - Luminescence intensity ratio

KW - Multimode sensing

KW - Optical thermometry

UR - https://www.mendeley.com/catalogue/3496e087-6cf7-3522-a693-547ae35fbb94/

U2 - 10.1016/j.jallcom.2024.176466

DO - 10.1016/j.jallcom.2024.176466

M3 - Article

VL - 1007

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

M1 - 176466

ER -