Kazan (Volga region) Federal University, KFU
KAZAN
FEDERAL UNIVERSITY
 
TEMPERATURE SENSITIVITY OF ND3+, YB3+: YF3 RATIOMETRIC LUMINESCENT THERMOMETERS AT DIFFERENT YB3+ CONCENTRATION
Form of presentationArticles in international journals and collections
Year of publication2021
Языканглийский
  • Lukinova Elena , author
  • Pudovkin Maksim Sergeevich, author
  • Ginkel Anna Konstantinovna, author
  • Bibliographic description in the original language Pudovkin, M. S., Ginkel, A. K., & Lukinova, E. V. (2021). Temperature sensitivity of Nd3+, Yb3+: YF3 ratiometric luminescent thermometers at different Yb3+ concentration. Optical Materials, 119, 111328.
    Annotation Nd3+ (0.5 mol.%), Yb3+ (1.0, 2.0, 3.0, 4.0, and 8.0 mol.%):YF3 phosphors were synthesized using a coprecipitation method with subsequent hydrothermal treatment and annealing in vacuum. The Nd3+, Yb3+:YF3 phosphors are orthorhombic phase nano-crystals. Luminescence intensity ratio (LIR) of Nd3+ (4F3/2 – 4I9/2, ~866 nm) and Yb3+ (2F5/2 – 2F7/2, ~980 nm) emissions was chosen as temperature-dependent parameter. The energy exchange between 4F3/2 (Nd3+) and 2F5/2 (Yb3+) is phonon-assisted which explains the temperature dependence of LIR. There are Nd3+ to Yb3+ energy transfer (ET), Yb3+ to Nd3+ back energy transfer (BET) and energy diffusion (ED) between Yb3+ ions. The probability of BET decreases with the increase of Yb3+ concentration which leads to LIR dependence on Yb3+ concentration. The maximum absolute temperature sensitivity (Sa) was achieved for Nd3+ (0.5%), Yb3+ (1.0%):YF3 (Sa = 0.0018 K􀀀 1 at 148 K). The studied samples demonstrate high stability after 8 cooling-heating cycles. The Nd3+ (0.5%), Yb3+ (1.0%):YF3 phosphors are very promising for temperature sensing.
    Keywords Luminescent thermometry Nd3+ Yb3+:YF3 Down-conversion Optical temperature sensors LIR
    The name of the journal Optical Materials
    URL https://www.sciencedirect.com/science/article/pii/S0925346721005292
    Please use this ID to quote from or refer to the card https://repository.kpfu.ru/eng/?p_id=255067&p_lang=2

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