Inflection in size-dependence of thermally enhanced up-conversion luminescence of UCNPs

Xu, Jie; Cheng, Yao; Xu, Jü; Lin, Hang; Wang, Yuansheng

doi:10.1039/d1qi01654g

Inorg. Chem. Front.

2022

DOI: 10.1039/d1qi01654g

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Inflection in size-dependence of thermally enhanced up-conversion luminescence of UCNPs

Jie Xu

Yao Cheng

Jü Xu

et al.

Abstract: The size-dependence of recently discovered thermally enhanced UCL for the UCNPs has been previously regarded as monotonous. However, all the published results for UCL thermo-enhancement to date only cover UCNPs...

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2024

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Cited by 3 publications

References 28 publications

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Thermal Enhancement of Er³⁺ NIR‐II Luminescence by Ho³⁺‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

Zhao,

Chang,

Wang

et al. 2024

Laser & Photonics Reviews

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Thermal quenching of luminescence materials poses a major obstacle to the technological application of luminescence thermometry. It still remains challenging to attain thermally enhanced light emissions, especially in the second near‐infrared window (NIR‐II). Herein, an anomalous thermal dependence of NIR‐II luminescence in the negative thermal expansion (NTE) Sc2Mo3O12:Er3+/Ho3+ nanocrystals is reported. Mechanistic investigations affirm that Ho3+ ion can work as an energy reservoir and back‐transfer to Er3+ ion with the assistance of lattice phonon at elevated temperatures. Moreover, the Ho3+‐mediated energy feedback is strengthened by the thermal contraction between dopant ions, thereby enabling a remarkable thermal enhancement of NIR‐II emission over 11‐fold. The opposite thermal response of Er3+ and Ho3+ emissions is harnessed for NIR‐II ratiometric thermometry, registering exceptional performance in a high‐temperature regime (Sr = 1.71% K−1, δT = 0.2 K at 513 K). These findings may inspire new insights for addressing the thermal quenching of NIR‐II luminescence, which also raises exciting opportunities for flexible thermometry in complex settings.

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Thermal Enhancement of Er³⁺ NIR‐II Luminescence by Ho³⁺‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

Zhao,

Chang,

Wang

et al. 2024

Laser & Photonics Reviews

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The size-dependent thermal enhancement of down-shifting luminescence based on non-Yb3+-mediated energy migration

Chen,

Xu,

et al. 2024

Journal of Luminescence

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Simultaneous negative thermal quenching luminescence of upconversion and downshifting processes in Al₂(WO₄)₃:Yb/Er phosphors with low thermal expansion

Yan,

Li,

Feng

et al. 2024

J. Mater. Chem. C

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Inflection in size-dependence of thermally enhanced up-conversion luminescence of UCNPs

Abstract: The size-dependence of recently discovered thermally enhanced UCL for the UCNPs has been previously regarded as monotonous. However, all the published results for UCL thermo-enhancement to date only cover UCNPs...

Cited by 3 publications

References 28 publications

Thermal Enhancement of Er³⁺ NIR‐II Luminescence by Ho³⁺‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

Thermal Enhancement of Er³⁺ NIR‐II Luminescence by Ho³⁺‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

The size-dependent thermal enhancement of down-shifting luminescence based on non-Yb3+-mediated energy migration

Simultaneous negative thermal quenching luminescence of upconversion and downshifting processes in Al₂(WO₄)₃:Yb/Er phosphors with low thermal expansion

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Inflection in size-dependence of thermally enhanced up-conversion luminescence of UCNPs

Abstract: The size-dependence of recently discovered thermally enhanced UCL for the UCNPs has been previously regarded as monotonous. However, all the published results for UCL thermo-enhancement to date only cover UCNPs...

Cited by 3 publications

References 28 publications

Thermal Enhancement of Er3+ NIR‐II Luminescence by Ho3+‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

Thermal Enhancement of Er3+ NIR‐II Luminescence by Ho3+‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

The size-dependent thermal enhancement of down-shifting luminescence based on non-Yb3+-mediated energy migration

Simultaneous negative thermal quenching luminescence of upconversion and downshifting processes in Al2(WO4)3:Yb/Er phosphors with low thermal expansion

Contact Info

Product

Resources

About

Thermal Enhancement of Er³⁺ NIR‐II Luminescence by Ho³⁺‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

Thermal Enhancement of Er³⁺ NIR‐II Luminescence by Ho³⁺‐Mediated Energy‐Trapping in Negative Thermal Expansion Nanocrystals

Simultaneous negative thermal quenching luminescence of upconversion and downshifting processes in Al₂(WO₄)₃:Yb/Er phosphors with low thermal expansion