Effect of Pr3+ on the stokes luminescence of YPO4:Nd3+ under IR excitation

Manashirov, O. Ya.; Георгобиани, А. Н.; Gutan, V. B.; Zvereva, E. M.; Лобанов, А. Н.

doi:10.1134/s0020168511080127

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…When the purity of rare earth materials is insufficient, the lowpurity rare earth element will show a characteristic peak in the spectrum, which can easily cause a change in the UCL spectrum due to the incorporation of other rare earth elements and affect A-S luminescence. [71]…”

Section: Surface Passivationmentioning

confidence: 99%

Near-infrared photocatalysis based on upconversion nanomaterials

et al. 2022

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As the global energy crisis and environmental pollution problems become more and more serious, it is important to develop new ways to improve the existing situation. Among these new technologies, the photocatalysis technology has caused widespread concern because of their huge application prospects in harnessing pollution free solar energy to degrade organic pollutants. In the other hand, from a fundamental scientific and technical standpoint, efficiently improved optical frequency is a demanding and intriguing topic, which provides a great framework for studying the optical processes impacted by the local photonic environment. This sort of study is especially pertinent since plasmonics places a greater focus on nonlinearity. Thus, the technology of near infrared (NIR) catalysis has received a lot of interest. In this review, we aim at offering an integrated framework about NIR photocatalysis. We will give a brief introduction of photocatalysis based on the upconversion (UC) materials, including the efficiency of UC materials, and the combination and energy transfer process between semiconductor and UC particles, as well as photoelectric response, photo controlled-delivery and photodynamic therapy based on the NIR-responsive materials.

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Section: Surface Passivationmentioning

confidence: 99%

Near-infrared photocatalysis based on upconversion nanomaterials

et al. 2022

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Sensitized IR luminescence in Ca3Y2Ge3O12: Nd3+, Ho3+ under 808 nm laser excitation

Baklanova

Enyashin

Maksimova

et al. 2018

Ceramics International

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Nd³⁺,Ho³⁺-Codoped apatite-related NaLa₉(GeO₄)₆O₂ phosphors for the near- and middle-infrared region

et al. 2018

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The apatite-like NaLa9(GeO4)6O2:Nd3+,Ho3+ phosphor is prepared using the solid-state method. Rietveld refinement of high-resolution time-of-flight neutron powder diffraction measurements indicate that this compound crystallizes in the hexagonal system with space group P63/m, Z = 1 and unit cell parameters a = 9.88903(6) Å, c = 7.25602(5) Å, V = 614.521(7) Å3 at room temperature. The 4f sites are statistically occupied by La, Nd and Na, while 6h sites are occupied by La and Nd. Luminescence in the near- and middle-IR range caused by the transitions in neodymium and holmium ions is excited under 808 nm laser diode radiation. The highest emission intensity in NaLa9-x-yNdxHoy(GeO4)6O2 is attained at trace amounts of holmium, and it decreases sharply when y increases to 0.01. The IR phosphors have a good thermal stability and exhibit a very weak upconversion emission in the red spectral range upon 808 nm excitation. A scheme of excitation and emission pathways involving ground/excited state absorption, energy transfer, cross-relaxation, nonradiative multiphonon relaxation processes in Nd3+ and Ho3+ ions has been proposed. The data analysis indicates that Nd3+ ions serve as sensitizers for Ho3+ ions in these compounds, stimulating intense 2.1 μm and 2.7 μm emissions. These apatite-related germanate phosphors are promising materials for near- and middle-infrared solid-state lighting applications.

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Effect of Pr3+ on the stokes luminescence of YPO4:Nd3+ under IR excitation

Cited by 6 publications

References 3 publications

Near-infrared photocatalysis based on upconversion nanomaterials

Near-infrared photocatalysis based on upconversion nanomaterials

Sensitized IR luminescence in Ca3Y2Ge3O12: Nd3+, Ho3+ under 808 nm laser excitation

Nd³⁺,Ho³⁺-Codoped apatite-related NaLa₉(GeO₄)₆O₂ phosphors for the near- and middle-infrared region

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Effect of Pr3+ on the stokes luminescence of YPO4:Nd3+ under IR excitation

Cited by 6 publications

References 3 publications

Near-infrared photocatalysis based on upconversion nanomaterials

Near-infrared photocatalysis based on upconversion nanomaterials

Sensitized IR luminescence in Ca3Y2Ge3O12: Nd3+, Ho3+ under 808 nm laser excitation

Nd3+,Ho3+-Codoped apatite-related NaLa9(GeO4)6O2 phosphors for the near- and middle-infrared region

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Product

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About

Nd³⁺,Ho³⁺-Codoped apatite-related NaLa₉(GeO₄)₆O₂ phosphors for the near- and middle-infrared region