Temperature dependent luminescence of Dy3+ doped BaYF5 nanoparticles for optical thermometry

Cao, Zhongmin; Zhou, Shaoshuai; Jiang, Guicheng; Chen, Yonghu; Duan, Chang‐Kui; Yin, Min

doi:10.1016/j.cap.2014.05.020

Cited by 114 publications

(37 citation statements)

References 28 publications

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“…Among the rare-earth ions, the Er 3+ , Dy 3+ , Tm 3+ and Ho 3+ ions are extensively used to investigate their applications in pc-LED devices and temperature sensor because they display excellent luminescence performance and possess thermally coupled energy levels. [26][27][28][29] In particular, Er 3+ ion is considered as a candidate activator for pc-LED devices and temperature probes due to its bright green emissions from the 2 H 11/2 and 4 S 3/2 thermally coupled levels which has suitable energy separation (~770-850 cm −1 ). 30,31 Du et al, reported that Er 3+ -doped La 2 MoO 6 phosphors displayed green light and their sensor sensitivity was as high as 0.0097 K −1 .…”

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confidence: 99%

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

et al. 2019

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Er3+‐activated NaSrLa(MoO4)O3 phosphors were synthesized by a traditional solid‐state reaction technique, which exhibited bright green emissions ascribing to the (2H11/2, 4S3/2) → 4I15/2 transitions of Er3+ ions under 377 nm excitation. The luminescence intensity increased with increasing the Er3+ ion concentration and achieved its maximum value when the doping concentration was 4 mol%. Moreover, the critical distance was estimated to be 25.32 Å, and the dipole‐dipole interaction played a significant role in NR energy transfer between Er3+ ions in NaSrLa(MoO4)O3 host lattices. At a forward bias current of 100 mA, the Light Emitting Diode (LED) device emitted a bright green emission with the color coordinate of (0.2547, 0.5996) that can be observed by the naked eye. Besides, based on the thermally coupled levels of 2H11/2 and 4S3/2, the temperature sensing performances of the prepared phosphors in the temperature range of 303‐483 K were studied using the fluorescence intensity ratio technique. The maximum sensor sensitivity was about 0.0150 K−1 when the temperature was 483 K, and the Er3+ ion concentration largely influenced the sensor sensitivity of studied samples. Furthermore, the prepared phosphors exhibited excellent water resistance and thermal stability behavior. These characteristics demonstrated that the Er3+ activated NaSrLa(MoO4)O3 phosphors were dual‐functional materials for solid‐state illumination and non‐contact temperature measurement.

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confidence: 99%

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

et al. 2019

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“…There was no extra peaks of other phase appeared, revealing that the varying experimental conditions have little influence on the crystal structure of the sample. It is noteworthy that all the diffraction peaks are shifted to higher 2 θ side, which indicates the lattice constant becomes smaller because the radii of Er 3+ or Yb 3+ are smaller than those of Y 3+ [25, 26]. Furthermore, it is easy to find the rules that when the reaction time increases, the intensity of the diffraction peaks is simultaneously enhanced.…”

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confidence: 99%

Controlled Synthesis of BaYF5:Er3+, Yb3+ with Different Morphology for the Enhancement of Upconversion Luminescence

et al. 2017

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In this work, Er 3+ /Yb 3+ -codoped BaYF 5 with different sizes and shapes have been synthesized by a simple solvothermal method. By changing the fluoride source, pH value, solvent, surfactants, Yb 3+ concentration, temperature, and reaction time, the optimum synthetic conditions of BaYF 5 :Er 3+ , Yb 3+ were found to improve the upconversion luminescent properties. It is found that the emission intensity of green and red light is enhanced for several times by the way of using NaBF 4 as a fluoride source with the comparison of NH 4 F and NaF. Moreover, the effects of different surfactants are not the same. Adding 5% polyetherimide (PEI) as surfactant can also improve the upconversion emission. On the contrary, when sodium citrate (CIT) as another surfactant was used to add, the sizes of the nanocrystals were gradually increased and the luminous properties also declined.

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“…The simulated line fits well with the experimental data in the temperature range 40–130 K. However, it should be noted that there is a clear deviance between the measured data and the fitted curve line when the temperature is lower than 40 K. The reason for this deviance is the spectral overlap between the HE emission band and the LE emission band originating from the small energy gap. Generally, the separation of two separated excited states requires more than 200 cm −1 to avoid substantial overlap of the two fluorescent wavelengths . It is clear that the LE broad band become closer and closer to the HE band from the rapid growth of its intensity with decreasing temperature.…”

Section: Resultsmentioning

confidence: 99%

A Luminescent Metal–Organic Framework Thermometer with Intrinsic Dual Emission from Organic Lumophores

Zhang

Lin

Sheng

et al. 2016

Chemistry A European J

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A new mixed-ligand metal-organic framework (MOF), ZnATZ-BTB, has been constructed as a luminescent ratiometric thermometer by making use of the intrinsic dual emission at cryogenic temperatures. Its twofold interpenetrated network promotes the Dexter energy transfer (DET) between the mixed organic lumophores. The temperature-dependent luminescent behavior arises from the thermal equilibrium between two separated excited states coupled by DET, which is confirmed by Boltzmann distribution fitting. The small excited-state energy gap allows ZnATZ-BTB to measure and visualize cryogenic temperatures (30-130 K) with significantly high relative sensitivity (up to 5.29% K(-1) at 30 K). Moreover, it is the first example of a ratiometric MOF thermometer the dual emitting sources of which are widely applicable mixed organic ligands, opening up new opportunities for designing such devices.

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Temperature dependent luminescence of Dy3+ doped BaYF5 nanoparticles for optical thermometry

Cited by 114 publications

References 28 publications

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

Controlled Synthesis of BaYF5:Er3+, Yb3+ with Different Morphology for the Enhancement of Upconversion Luminescence

A Luminescent Metal–Organic Framework Thermometer with Intrinsic Dual Emission from Organic Lumophores

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Temperature dependent luminescence of Dy3+ doped BaYF5 nanoparticles for optical thermometry

Cited by 114 publications

References 28 publications

NUV light induced visible emission in Er3+‐activated NaSrLa(MoO4)O3 phosphors for green LEDs and thermometer

NUV light induced visible emission in Er3+‐activated NaSrLa(MoO4)O3 phosphors for green LEDs and thermometer

Controlled Synthesis of BaYF5:Er3+, Yb3+ with Different Morphology for the Enhancement of Upconversion Luminescence

A Luminescent Metal–Organic Framework Thermometer with Intrinsic Dual Emission from Organic Lumophores

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About

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer