Long-persistent far-UVC light emission in Pr3+-doped Sr2P2O7 phosphor for microbial sterilization

Zhang, Yi; Yan, Shao; Xiao, Fang; Shan, Xihui; Lv, Xulong; Wang, Weili; Liang, Yanjie

doi:10.1039/d3qi01253k

Cited by 6 publications

(4 citation statements)

References 64 publications

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“…The dark blue vertical line represents the Bragg position. 31 The reliability factors R wp = 9.94% and R p = 7.48% indicate that the refinement results are plausible. 32−34 The crystal structure of the Mg 2 SnO 4 belongs to the Fd-3m space group with the cell parameters of a = b = 8.6350 Å, α = β = γ = 90°, V = 643.85 Å 3 , and Z = 8.…”

Section: Resultsmentioning

confidence: 88%

“…All the diffraction peaks are consistent with the standard Mg 2 SnO 4 phase (PDF#00-024-0723), indicating that Zn 2+ was successfully doped into Mg 2 SnO 4 lattice. , Rietveld refining on the XRD pattern of Mg 1.2 Zn 0.8 SnO 4 was displayed in Figure b. − The black cross here is the experimental data, the calculated pattern is shown in red, and the difference between the two is indicated by the green line. The dark blue vertical line represents the Bragg position . The reliability factors R wp = 9.94% and R p = 7.48% indicate that the refinement results are plausible. − The crystal structure of the Mg 2 SnO 4 belongs to the Fd -3 m space group with the cell parameters of a = b = 8.6350 Å, α = β = γ = 90°, V = 643.85 Å 3 , and Z = 8 …”

Section: Resultsmentioning

confidence: 98%

“…The TL experiment results of the time-fading are given in Figure 7a. 31,33 As time goes by, the maximum TL band moves to high temperature, while the TL intensity decreases rapidly. 50 It also reveals that the phosphors we synthesized contain deep and shallow traps.…”

Section: Persl and Tl Propertiesmentioning

confidence: 99%

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Trap Depth Engineering from Persistent Luminescence Phosphors Mg_2-_xZn_xSnO₄ for Dynamic Optical Information Encryption Application

Zhao,

Li,

Xiang

et al. 2024

Inorg. Chem.

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Traditional information encryption materials that rely on fluorescent/phosphorescent molecules are facing an increasing risk of counterfeiting or tampering due to their static reading mode and advances in counterfeiting technology. In this study, a series of Mg2–x Zn x SnO4 (x = 0.55, 0.6, 0.65, 0.7 0.75, 0.8) that realizes the writing, reading, and erasing of dynamic information is developed. When heated to 90 °C, the materials exhibit a variety of dynamic emission changes with the concentration of Zn2+ ions. As the doping concentration increased, the ratio of the shallow trap to deep trap changed from 7.77 to 20.86. When x = 0.55, the proportion of deep traps is relatively large, resulting in a higher temperature and longer time required to read the information. When x = 0.80, the proportion of shallow traps is larger and the encrypted information is easier to read. Based on the above features, encryption binary codes device was designed, displaying dynamic writing, reading, and erasing of information under daylight and heating conditions. Accordingly, this work provides reliable guidance on advanced dynamic information encryption.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Trap Depth Engineering from Persistent Luminescence Phosphors Mg_2-_xZn_xSnO₄ for Dynamic Optical Information Encryption Application

Zhao,

Li,

Xiang

et al. 2024

Inorg. Chem.

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“…Up to now, a large number of Pr 3+ -doped phosphors have been reported. For example, the 5d-4f transition emissions of Pr 3+ was found to be located in 220-300 nm for the Sr 2 P 2 O 7 :Pr 3+ phosphor, and continuous ultraviolet-C persistent luminescence could be achieved after X-ray irradiation [13]. Y 3 Si 6 N 11 :Pr 3+ exhibits a red broad-band emission, which may be potentially used for w-LEDs and temperature sensing [14].…”

Section: Introductionmentioning

confidence: 99%

Multi-Band Emission of Pr3+-Doped Ca3Al2O6 and the Effects of Charge Compensator Ions on Luminescence Properties

Hou,

Huang,

Zhang

et al. 2023

Nanomaterials

Self Cite

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Multi-band emission luminescence materials are of great significance owing to their extensive application in diverse fields. In this research, we successfully prepared a series of Pr3+-doped Ca3Al2O6 multi-band emission phosphors via a high-temperature solid-state method. The phase structure, morphology, luminescence spectra and decay curves were investigated in detail. The Ca3Al2O6:Pr3+ phosphors can absorb blue lights and emit lights in the 450–750 nm region, and typical emission bands are located at 488 nm (blue), 525–550 nm (green), 611–614 nm (red), 648 nm (red) and 733 nm (deep red). The influence of the Pr3+ doping concentration was discussed, and the optimal Pr3+ doping concentration was determined. The impacts of charge compensator ions (Li+, Na+, and K+) on the luminescence of Pr3+ were also investigated, and it was found that all the charge compensator ions contributed positively to the emission intensity. More importantly, the emission intensity of the as-prepared phosphors at 423 K can still maintain 65–70% of that at room temperature, and the potential application for pc-LED was investigated. The interesting results indicate that the prepared phosphors may serve multifunctional and advanced applications.

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Double Gain of Efficient UV‐C Phosphor and Fast Scintillator Based on Pr³⁺‐doped KY₃F₁₀ Nano‐Glass Composites

Wang,

Hua,

Wang

et al. 2023

Advanced Optical Materials

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Glassy phosphors offer a promising opportunity to overcome the limits of polycrystalline counterparts, thanks to their merits including excellent optical transparency, abandonment of organic binders, and capability of drawing fibers, etc. However, research and development of glassy UV‐C phosphors and fast scintillators have seriously lagged behind crystals. Here, a new type of efficient UV‐C phosphors and fast scintillators (double gain) is developed from Pr3+‐doped transparent nano‐glass composites (nano‐GCs) containing KY3F10 nanocrystals. Such a material combines favorably the advantages of both crystal and glass, exhibiting intense interconfigurational 5d‐4f emissions of Pr3+ upon deep‐UV, high energy electron‐beam and X‐ray excitations. The emission profile ideally overlaps with the germicidal effectiveness curve. The Pr3+‐doped nano‐GCs are endowed with a radiative decay time shorter than that of extensively studied Ce3+‐doped glasses and nano‐GCs. They exhibit intense X‐ray excited radioluminescence that is comparable to the standard Bi4Ge3O12 (BGO) crystal and significantly stronger than Pr3+‐doped ZBLAN fluoride glass known for the high luminescence efficiency. An X‐ray imaging system with a good spatial resolution using the Pr3+‐doped nano‐GCs is also demonstrated.

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Long-persistent far-UVC light emission in Pr³⁺-doped Sr₂P₂O₇ phosphor for microbial sterilization

Abstract: With the occurrence of global health events such as COVID-19, the development of high-performance ultraviolet-C (UVC) light sources for efficient and convenient sterilization application holds a promising scientific and engineering...

Cited by 6 publications

References 64 publications

Trap Depth Engineering from Persistent Luminescence Phosphors Mg_2-_xZn_xSnO₄ for Dynamic Optical Information Encryption Application

Trap Depth Engineering from Persistent Luminescence Phosphors Mg_2-_xZn_xSnO₄ for Dynamic Optical Information Encryption Application

Multi-Band Emission of Pr3+-Doped Ca3Al2O6 and the Effects of Charge Compensator Ions on Luminescence Properties

Double Gain of Efficient UV‐C Phosphor and Fast Scintillator Based on Pr³⁺‐doped KY₃F₁₀ Nano‐Glass Composites

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Long-persistent far-UVC light emission in Pr3+-doped Sr2P2O7 phosphor for microbial sterilization

Abstract: With the occurrence of global health events such as COVID-19, the development of high-performance ultraviolet-C (UVC) light sources for efficient and convenient sterilization application holds a promising scientific and engineering...

Cited by 6 publications

References 64 publications

Trap Depth Engineering from Persistent Luminescence Phosphors Mg2-xZnxSnO4 for Dynamic Optical Information Encryption Application

Trap Depth Engineering from Persistent Luminescence Phosphors Mg2-xZnxSnO4 for Dynamic Optical Information Encryption Application

Multi-Band Emission of Pr3+-Doped Ca3Al2O6 and the Effects of Charge Compensator Ions on Luminescence Properties

Double Gain of Efficient UV‐C Phosphor and Fast Scintillator Based on Pr3+‐doped KY3F10 Nano‐Glass Composites

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Product

Resources

About

Long-persistent far-UVC light emission in Pr³⁺-doped Sr₂P₂O₇ phosphor for microbial sterilization

Trap Depth Engineering from Persistent Luminescence Phosphors Mg_2-_xZn_xSnO₄ for Dynamic Optical Information Encryption Application

Trap Depth Engineering from Persistent Luminescence Phosphors Mg_2-_xZn_xSnO₄ for Dynamic Optical Information Encryption Application

Double Gain of Efficient UV‐C Phosphor and Fast Scintillator Based on Pr³⁺‐doped KY₃F₁₀ Nano‐Glass Composites