TY - JOUR

T1 - ZnTe Crystal Multimode Cryogenic Thermometry Using Raman and Luminescence Spectroscopy

AU - Борисов, Евгений Вадимович

AU - Калиничев, Алексей Андреевич

AU - Колесников, Илья Евгеньевич

PY - 2023/2/3

Y1 - 2023/2/3

N2 - In this study, ZnTe crystal was applied to provide precise thermal sensing for cryogenic temperatures. Multiple techniques, namely Raman and photoluminescence spectroscopies, were used to broaden the operating temperature range and improve the reliability of the proposed thermometers. Raman-based temperature sensing could be applied in the range of 20-100 K, while luminescence-based thermometry could be utilized in a narrower range of 20-70 K. However, the latter strategy provides better relative thermal sensitivity and temperature resolution. The best thermal performances based on a single temperature-dependent parameter attain S r = 3.82% K -1 and Δ T = 0.12 K at T = 50 K. The synergy between multiple linear regression and multiparametric thermal sensing demonstrated for Raman-based thermometry results in a ten-fold improvement of Sr and a two-fold enhancement of Δ T. All studies performed testify that the ZnTe crystal is a promising multimode contactless optical sensor for cryogenic thermometry.

AB - In this study, ZnTe crystal was applied to provide precise thermal sensing for cryogenic temperatures. Multiple techniques, namely Raman and photoluminescence spectroscopies, were used to broaden the operating temperature range and improve the reliability of the proposed thermometers. Raman-based temperature sensing could be applied in the range of 20-100 K, while luminescence-based thermometry could be utilized in a narrower range of 20-70 K. However, the latter strategy provides better relative thermal sensitivity and temperature resolution. The best thermal performances based on a single temperature-dependent parameter attain S r = 3.82% K -1 and Δ T = 0.12 K at T = 50 K. The synergy between multiple linear regression and multiparametric thermal sensing demonstrated for Raman-based thermometry results in a ten-fold improvement of Sr and a two-fold enhancement of Δ T. All studies performed testify that the ZnTe crystal is a promising multimode contactless optical sensor for cryogenic thermometry.

KW - Raman spectrum

KW - ZnTe

KW - cryogenic temperature

KW - multimode sensing

KW - optical thermometry

KW - photoluminescence

UR - https://www.mendeley.com/catalogue/a5730ba3-7f2d-3d17-9738-0f7f2256d192/

U2 - 10.3390/ma16031311

DO - 10.3390/ma16031311

M3 - Article

C2 - 36770317

VL - 16

JO - Materials

JF - Materials

SN - 1996-1944

IS - 3

M1 - 1311

ER -