Ratiometric dual-center Gd2O3:Tb3+/Eu3+ nanothermometers with enhanced thermometric performances

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Ratiometric dual-center Gd₂O₃:Tb³⁺/Eu³⁺ nanothermometers with enhanced thermometric performances. / Kolesnikov, Ilya E.; Mamonova, Daria V.; Kurochkin, Mikhail A.; Medvedev, Vassily A.; Kolesnikov, Evgenii Yu.

в: Journal of Alloys and Compounds, Том 922, 166182, 20.11.2022.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{53a29807da104147adb88ed39978b9b5,

title = "Ratiometric dual-center Gd2O3:Tb3+/Eu3+ nanothermometers with enhanced thermometric performances",

abstract = "Ratiometric luminescence thermometers based on thermally coupled levels provide reliable temperature sensing with predictable calibration. However, requirement of thermal coupling of levels limits possible energy gap between them, and as, a result, leads to a fundamental limitation of relative thermal sensitivity. Development of luminescence thermometers with two active centers could overcome this drawback and obtain sensors with enhanced thermometric characteristics. Here, we suggested two types of dual-center Gd2O3:Tb3+/Eu3+ nanophosphors, namely co-doping and physical mixture, for ratiometric thermometry within temperature range of 123–473 K. Monitoring luminescence intensity ratio between Tb3+ and Eu3+ bands provides contactless sensing with moderate relative thermal sensitivities (0.53–0.77 % K−1) and sub-degree temperature resolution (0.3–0.6 K) at room temperature. All studied thermometers irrespective to dispersion system type and doping concentration display exceptional relative sensitivity exceeding the theoretical limit of sensors based on thermally-coupled levels at high temperatures. The largest sensitivity was determined to be 5.6 % K−1@473 K for mixed Gd2O3:Tb3+ 0.01 at. % + Gd2O3:Eu3+ 0.2 at. % sample.",

keywords = "Dual-center, Luminescence, Ratiometric sensing, Sensitivity, Thermometry",

author = "Kolesnikov, {Ilya E.} and Mamonova, {Daria V.} and Kurochkin, {Mikhail A.} and Medvedev, {Vassily A.} and Kolesnikov, {Evgenii Yu}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = nov,

day = "20",

doi = "10.1016/j.jallcom.2022.166182",

language = "English",

volume = "922",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Ratiometric dual-center Gd2O3:Tb3+/Eu3+ nanothermometers with enhanced thermometric performances

AU - Kolesnikov, Ilya E.

AU - Mamonova, Daria V.

AU - Kurochkin, Mikhail A.

AU - Medvedev, Vassily A.

AU - Kolesnikov, Evgenii Yu

PY - 2022/11/20

Y1 - 2022/11/20

N2 - Ratiometric luminescence thermometers based on thermally coupled levels provide reliable temperature sensing with predictable calibration. However, requirement of thermal coupling of levels limits possible energy gap between them, and as, a result, leads to a fundamental limitation of relative thermal sensitivity. Development of luminescence thermometers with two active centers could overcome this drawback and obtain sensors with enhanced thermometric characteristics. Here, we suggested two types of dual-center Gd2O3:Tb3+/Eu3+ nanophosphors, namely co-doping and physical mixture, for ratiometric thermometry within temperature range of 123–473 K. Monitoring luminescence intensity ratio between Tb3+ and Eu3+ bands provides contactless sensing with moderate relative thermal sensitivities (0.53–0.77 % K−1) and sub-degree temperature resolution (0.3–0.6 K) at room temperature. All studied thermometers irrespective to dispersion system type and doping concentration display exceptional relative sensitivity exceeding the theoretical limit of sensors based on thermally-coupled levels at high temperatures. The largest sensitivity was determined to be 5.6 % K−1@473 K for mixed Gd2O3:Tb3+ 0.01 at. % + Gd2O3:Eu3+ 0.2 at. % sample.

AB - Ratiometric luminescence thermometers based on thermally coupled levels provide reliable temperature sensing with predictable calibration. However, requirement of thermal coupling of levels limits possible energy gap between them, and as, a result, leads to a fundamental limitation of relative thermal sensitivity. Development of luminescence thermometers with two active centers could overcome this drawback and obtain sensors with enhanced thermometric characteristics. Here, we suggested two types of dual-center Gd2O3:Tb3+/Eu3+ nanophosphors, namely co-doping and physical mixture, for ratiometric thermometry within temperature range of 123–473 K. Monitoring luminescence intensity ratio between Tb3+ and Eu3+ bands provides contactless sensing with moderate relative thermal sensitivities (0.53–0.77 % K−1) and sub-degree temperature resolution (0.3–0.6 K) at room temperature. All studied thermometers irrespective to dispersion system type and doping concentration display exceptional relative sensitivity exceeding the theoretical limit of sensors based on thermally-coupled levels at high temperatures. The largest sensitivity was determined to be 5.6 % K−1@473 K for mixed Gd2O3:Tb3+ 0.01 at. % + Gd2O3:Eu3+ 0.2 at. % sample.

KW - Dual-center

KW - Luminescence

KW - Ratiometric sensing

KW - Sensitivity

KW - Thermometry

UR - http://www.scopus.com/inward/record.url?scp=85134533919&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2022.166182

DO - 10.1016/j.jallcom.2022.166182

M3 - Article

AN - SCOPUS:85134533919

VL - 922

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

M1 - 166182

ER -

ID: 98303742