An active-core/active-shell structure with enhanced quantum-cutting luminescence in Pr–Yb co-doped monodisperse nanoparticles

Zhu, Wenjuan; Chen, Daqin; Lei, Lei; Xu, Jü; Wang, Yuansheng

doi:10.1039/c4nr02785j

Cited by 45 publications

(29 citation statements)

References 41 publications

(11 reference statements)

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“…More importantly, rare earth ions doped into fluoride nanoparticles demonstrate even better optical properties in comparison with some counterparts [18]. Nanofuorides are chosen as the host not only because of their low phonon energy but also because of their desirable chemical stability and low toxicity [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…e work in visible light provides high spatial resolution (∼λ/2). On the other hand, because of the high surface to volume ratio of nanosized objects the nanothermometer's luminescence can significantly be reduced by surficial defects and high vibronic molecules which increase nonradiative decay probability [19,26]. ese adverse effects can be avoided or at least can be reduced by the formation of core/shell structure which prevents direct contact of surface ions with quenchers.…”

Section: Introductionmentioning

confidence: 99%

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Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Pudovkin

Koryakovtseva

Lukinova

et al. 2019

Advances in Materials Science and Engineering

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Core Pr3+ : LaF3 (CPr = 1%) plate-like nanoparticles (nanoplates), core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanoplates, core Pr3+ : LaF3 (CPr = 1%) sphere-like nanoparticles (nanospheres), and core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanospheres were synthesized via the coprecipitation method of synthesis. The nanoparticles (NPs) were characterized by means of transmission electron microscopy, X-ray diffraction, and optical spectroscopy. The formation of the shell was proved by detecting the increase in physical sizes, sizes of coherent scattering regions, and luminescence lifetimes of core/shell NPs comparing with single core NPs. The average physical sizes of core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres were 62.2 ± 0.9, 74.7 ± 1.2, 13.8 ± 0.9 and 22.0 ± 1.2 nm, respectively. The formation of the NP shell led to increasing of effective luminescence lifetime τeff of the 3P0 state of Pr3+ ions for the core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres the values of τeff were 2.3, 3.6, 3.2, and 4.7 μsec, respectively (at 300 K). The values of absolute sensitivity Sa for fluorescence intensity ratio (FIR) thermometry was 0.01 K−1 at 300 K for all the samples. The FIR sensitivity can be attributed to the fact that 3P1 and 3P0 states share their electronic populations according to the Boltzmann process. The values of Sa for lifetime thermometry for core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres were (36.4 ± 3.1) · 10−4, (70.7 ± 5.9) · 10−4, (40.7 ± 2.6) · 10−4, and (68.8 ± 2.4) · 10−4 K−1, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Pudovkin

Koryakovtseva

Lukinova

et al. 2019

Advances in Materials Science and Engineering

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“…Upconversion is a non‐linear optical process which two or more low‐energy near infrared (NIR) photons are absorbed to generate a higher‐energy photon ,. Due to such unique anti‐Stocks luminescent property, lanthanide rare‐earth doped upconversion nanoparticles (UCNPs) exhibited great potential values in the past years in many application fields such as bio‐imaging, optical sensing, lasing, full‐color display, photo dynamic therapy, drug releasing, super‐resolution imaging and anti‐counterfeiting …”

Section: Introductionmentioning

confidence: 99%

Effects of Ce³⁺ Doping in Green-Red Emitting Upconversion Nanoparticles

2017

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Controlling the luminescence of the rare‐earth doped photon‐upconversion materials is of particular importance for their practical applications. One of the most effective strategies for tuning the luminescent spectra is introducing extra dopants into the system to change the local symmetry of the crystal or get involved in the photon‐upconversion process. In this work, completely opposite trends of green‐to‐red luminescent intensity ratio are observed when utilizing Ce3+ ions to manipulate emissions in Yb3+‐Ho3+ and Yb3+‐Er3+ doped upconversion nanoparticles. It is difficult to explain how the interaction happens between Ce3+ and Er3+ according to the 2‐photon red upconversion emission process in Yb3+‐Er3+ pair. We propose an explanation that the 5d state of Ce3+ is benefit for the increase of green‐to‐red luminescent ratio in Er3+. This work provides insight into mechanistic understanding of upconversion phenomena in nanoparticles and also enables exciting new opportunities of designing new materials for photonic applications.

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“…Meijerink and Vergeer first demonstrated an experiment on the near-infrared, two-photon quantum cutting phenomenon in Yb x Y 1−x PO 4 :Tb 3+ phosphors in 2005 1 , which was conducted after they reported a well-known visible quantum cutting experiment for an Eu 3+ /Gd 3+ system in Science 2 . Since 2007, several groups, including Meijerink 1, 3, 19, 21, 27 , Qiu and Zhou 5, 12, 15 , Wang and Chen 6, 11, 13 , Huang 24 , Zou and Wang 25 , Fedorov and Luginina 9 , Zhang 7, 27 , Xia and Hu 29 , Guo and Chen 23 , and Song and Tao 30, 32 , and more 17, 20, 22 , have published more than 200 articles on the second-order, near-infrared, quantum cutting luminescence phenomena of sensitizer-Yb 3+ co-doped materials 1–25 , which were used to develop two-photon quantum cutting silicon solar cells. Near-infrared quantum cutting has become a hot topic in the field of science and nature.…”

Section: Introductionmentioning

confidence: 99%

Near Infrared Quantum Cutting Luminescence of Er3+/Tm3+ Ion Pairs in a Telluride Glass

Chen

Song

et al. 2017

Sci Rep

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The multiphoton near-infrared, quantum cutting luminescence in Er3+/Tm3+ co-doped telluride glass was studied. We found that the near-infrared 1800-nm luminescence intensity of (A) Er3+(8%)Tm3+(0.5%):telluride glass was approximately 4.4 to 19.5 times larger than that of (B) Tm3+(0.5%):telluride glass, and approximately 5.0 times larger than that of (C) Er3+(0.5%):telluride glass. Additionally, the infrared excitation spectra of the 1800 nm luminescence, as well as the visible excitation spectra of the 522 nm and 652 nm luminescence, of (A) Er3+(8%)Tm3+(0.5%):telluride glass are very similar to those of Er3+ ions in (C) Er3+(0.5%):telluride glass, with respect to the shapes of their excitation spectral waveforms and peak wavelengths. Moreover, we found that there is a strong spectral overlap and energy transfer between the infrared luminescence of Er3+ donor ions and the infrared absorption of Tm3+ acceptor ions. The efficiency of this energy transfer {4I13/2(Er3+) → 4I15/2(Er3+), 3H6(Tm3+) → 3F4(Tm3+)} between the Er3+ and Tm3+ ions is approximately 69.8%. Therefore, we can conclude that the observed behaviour is an interesting multiphoton, near-infrared, quantum cutting luminescence phenomenon that occurs in novel Er3+-Tm3+ ion pairs. These findings are significant for the development of next-generation environmentally friendly germanium solar cells, and near-to-mid infrared (1.8–2.0 μm) lasers pumped by GaN light emitting diodes.

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An active-core/active-shell structure with enhanced quantum-cutting luminescence in Pr–Yb co-doped monodisperse nanoparticles

Cited by 45 publications

References 41 publications

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Effects of Ce³⁺ Doping in Green-Red Emitting Upconversion Nanoparticles

Near Infrared Quantum Cutting Luminescence of Er3+/Tm3+ Ion Pairs in a Telluride Glass

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An active-core/active-shell structure with enhanced quantum-cutting luminescence in Pr–Yb co-doped monodisperse nanoparticles

Cited by 45 publications

References 41 publications

Luminescence Nanothermometry Based on Pr3+ : LaF3 Single Core and Pr3+ : LaF3/LaF3 Core/Shell Nanoparticles

Luminescence Nanothermometry Based on Pr3+ : LaF3 Single Core and Pr3+ : LaF3/LaF3 Core/Shell Nanoparticles

Effects of Ce3+ Doping in Green-Red Emitting Upconversion Nanoparticles

Near Infrared Quantum Cutting Luminescence of Er3+/Tm3+ Ion Pairs in a Telluride Glass

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Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Effects of Ce³⁺ Doping in Green-Red Emitting Upconversion Nanoparticles