Luminescence thermometry with transition metal ions. A review

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 469, P. 214671 - 214671

Published: June 21, 2022

Transition metal (TM) ion activated phosphors are increasingly being used as probes for luminescence thermometry. Their is characterized by strong absorption and emission bands that span the visible near-infrared spectral ranges highly susceptible to temperature variations. Due latter characteristic, sensitive reliable remote measurements can be performed observing temperature-induced changes in TM intensities, bandwidths bandshifts, excited state lifetimes, well dependences of intensity ratios between various single or double phosphors. This review provides a systematic analysis performances luminescent thermometers based on different ions discusses relations among spectroscopic properties, characteristics host material structure, thermometric performance. Particular attention given engineering energy transfer other dopant obtain thermometers. Finally, several typical application examples from recent literature highlighted.

Language: Английский

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A four-mode high-sensitive optical thermometer based on Ca3LiZnV3O12:Sm3+ phosphors

Materials Today Chemistry, Journal Year: 2023, Volume and Issue: 29, P. 101409 - 101409

Published: Feb. 20, 2023

Language: Английский

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Eu³⁺ Single-Doped Phosphor with Antithermal Quenching Behavior and Multicolor-Tunable Properties for Luminescence Thermometry

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(2), P. 893 - 903

Published: Jan. 4, 2023

To date, non-contact luminescence thermometry methods based on fluorescence intensity ratio (FIR) technology have been studied extensively. However, designing phosphors with high relative sensitivity (Sr) has become a research hotspot. In this work, Eu3+ single-doped Ca2Sb2O7:Eu3+ Sr value for dual-emitting-center are developed and proposed. The anti-thermal quenching behavior of originating from the energy transfer (ET) host → is found proved in designed phosphors. Interestingly, adjustable color emission blue to orange can be achieved. Surprisingly, degree gradually reduces 240 127% as doping content increases 0.005 0.05 mol, attributed most being located low symmetrical [Ca1O8] dodecahedral site. According differentiable responses temperature, maximal reaches 3.369% K-1 (383 K). Moreover, ambient temperature intuitively predicted by observing emitting color. Owing excellent performance optical thermometry, color-tunable properties, outstanding acid alkali resistance polydimethylsiloxane (PDMS) films, expected prospective candidates thermometers LED devices various conditions.

Language: Английский

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Dy3+,Mn4+ co-doped phosphors for synergistic luminescent dual-mode thermometer and high-resolution imaging

Materials & Design, Journal Year: 2024, Volume and Issue: 241, P. 112906 - 112906

Published: April 1, 2024

Fluorescent temperature measurement has become a research hotspot due to its characteristics of non-contact, miniaturization, and fast response. However, it remains key challenge realize excellent sensitivity high resolution. Herein, series La2MgTiO6:Dy3+,Mn4+ phosphors are developed the related energy transfer between Dy3+→Mn4+ is discovered. The coupling distance Mn4+ adjacent ligands greatly affected by temperature. differences emission levels lower Dy3+ hinder multi-phonon relaxation process, which moderates thermal quenching rate Dy3+. Therefore, highly sensitive FIR thermometers built according significant discrimination dependence Mn4+. maximum Sa Sr reach 0.022 K−1(@563 K) 2.622 %K−1(@544 K). In contrast, thermometer based on lifetime fabricated, extremely Interestingly, can effectively promote Mn4+, then improve sensitivity. enhanced from 1.621 %K−1(@503 2.305 %K−1 (@480 resolution dual-mode fluorescence thermometry have exceeded most current optical materials. Besides, thermochromic properties presented designed be combined with PDMS films qualitatively evaluate ambient

Language: Английский

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Suppressing Self‐Oxidation of Eu²⁺ in Li₂CaSiO₄ for Full‐Spectrum Lighting and Accurate Temperature Sensing

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(10)

Published: May 2, 2024

Abstract Eu 2+ ‐doped phosphors have attracted the great attention of researchers in past decade. However, dopant inorganic hosts often suffers from self‐oxidation effect, therefore causing attenuated emission intensity and quantum efficiency. In this regard, developing doped with prohibited effect increased thermal stability is urgently required. Herein, an innovative cyan‐light emitting Li 2 CaSiO 4 :Eu /Eu 3+ , Lu (LCSO) phosphor designed. Both experimental results theoretical calculations demonstrate that adding restricts into thus improving . Meanwhile, introduction brings out excellent stability. Finally, efficient WLED a color temperature (CCT) 4573 K high rendering index (R ) 84.2 obtained using as‐prepared due to perfect compensation cyan light. As improves much greater difference PL decay rate between LCSO reached, thereby their sensitivity sensing. The strategy for prohibiting stable may stimulate some new ideas designing high‐performance more diverse applications.

Language: Английский

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Novel Li2Ga0.5Sb0.5O3(Li4GaSbO6):Mn4+ phosphors with multisite occupancy for efficient FIR and luminescence lifetime dual-mode thermometers

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Synergistic luminescent thermometer using co-doped Ca₂GdSbO₆:Mn⁴⁺/(Eu³⁺ or Sm³⁺) phosphors

Dalton Transactions, Journal Year: 2022, Volume and Issue: 51(12), P. 4685 - 4694

Published: Jan. 1, 2022

Luminescent thermometers provide a non-contact method of probing temperature with high sensitivity and response speed at the nanoscale. Synergistic photoluminescence from different activators can realize for luminescent by finely selecting ions specific crystallographic sites. Herein, more temperature-sensitive Mn4+ less-sensitive Eu3+ (or Sm3+) are co-doped into Ca2GdSbO6 matrix to form an effective thermometer, where occupy Sb5+ Gd3+ sites, respectively. The co-doping or Sm3+ leads lattice expansion tuned narrow emission deep-red orangish-red. According ratio luminescence intensity, maximal Sa Sr values 0.19 K-0 (347 K) 1.38% K-( (420 Ca2GdSbO6:Mn4+/Eu3+ probe 0.26 K-p (363 1.55% (430 Ca2GdSbO6:Mn4+/Sm3+ thermometers, In addition, based on lifetimes highest relative 1.47% K-s 425 K. Thus, highly-temperature-sensitive Ca2GdSbO6:Mn4+/(Eu3+ phosphor is promising candidate practical thermometers.

Language: Английский

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High-sensitivity luminescent thermometer based on Mn4+/Sm3+ dual-emission centers in double-perovskite tellurate

Ceramics International, Journal Year: 2022, Volume and Issue: 48(19), P. 27664 - 27671

Published: June 8, 2022

Language: Английский

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High sensitivity and multicolor tunable optical thermometry in Bi3+/Eu3+ co-doped Ca2Sb2O7 phosphors

Materials Today Chemistry, Journal Year: 2022, Volume and Issue: 27, P. 101264 - 101264

Published: Dec. 2, 2022

Language: Английский

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Dazzling Red-Emitting Europium(III) Ion-Doped Ca₂LaHf₂Al₃O₁₂ Garnet-Type Phosphor Materials with Potential Application in Solid-State White Lighting

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(18), P. 6898 - 6909

Published: April 27, 2022

Bright red-emitting phosphors with high color purity and photoluminescence quantum yield (PLQY) are highly demanded for the fabrication of high-performance warm-white light-emitting diodes (LEDs). Herein, we demonstrated a novel efficient Eu3+-activated Ca2LaHf2Al3O12 garnet phosphor excellent luminescence properties near-ultraviolet (near-UV) excited LEDs. The Ca2LaHf2Al3O12:Eu3+ exhibited an intense excitation spectrum in near-UV region maximum around 394 nm, they produced dazzling red peaking at 592, 614, 659, 711 nm due to 5D0 → 7FJ (J = 1-4) transitions Eu3+ ions when wavelength was set nm. Luminescent have been studied as function doping concentration, highest emission intensity achieved 50 mol % Eu3+, while dipole-dipole interaction brought concentration quenching effect. Ca2LaHf2Al3O12:50%Eu3+ sample CIE chromaticity coordinates (0.6419, 0.3575) 92.7%, its PLQY measured be 64%. thermal stability activation energy were also discussed analyzed. Finally, made chip-based white LED device which utilized ingredient. A bright light realized from this under 80 mA driving current, accompanied by rendering index (CRI) 88.3, low correlation temperature 3853 K, good (0.3909, 0.3934). These results revealed that these promising application prospect near-UV-excited LEDs CRI.

Language: Английский

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