Influence of synthesis conditions on structural and spectroscopic properties of the K2SrP2O7 pyrophosphate doped with the Eu3+ and Eu2+ ions

Patej, Adrian; Hanuza, J.; Ptak, Maciej; Pelczarska, Aleksandra; Szczygieł, I.; Wiglusz, Rafał J.; Watras, Adam

doi:10.1016/j.jallcom.2021.163076

Cited by 5 publications

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“…It is observed that the decay time of the Eu 2+ varies with the host matrices. 53 In the K 2 SrP 2 O 7 host, the average decay time reported is 140 ns, 17 and in CsBr, it is 342 ns. 53 The average decay time of Eu 2+ is also reported in the microsecond region.…”

Section: Time-resolved Photoluminescence (Trpl) Studymentioning

confidence: 99%

“…Considering its intense blue emission, Eu 2+ ions have been doped in different hosts for advanced applications such as for scintillation, display panels, fluorescent lamps, blue LEDs, etc. , A few groups have studied the various properties of Eu 2+ -doped phosphors which have been synthesized using the solid-state reaction method, combustion method, hydrothermal method, and melt quenching method . However, the study of the optical properties of Eu 2+ in IHPs is not well explored.…”

Section: Introductionmentioning

confidence: 99%

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Expanding the Emission of CsPbBr₃ Nanocrystals in the Blue Region

Kachhap,

Fatima,

Yadav

et al. 2023

ACS Appl. Opt. Mater.

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We report blue emission, along with the characteristic green emission, in CsPbBr 3 nanocrystals (NCs) due to the doping of Eu 2+ ions. The doping of Eu 2+ was confirmed using TEM-EDAX, FTIR, and XPS techniques. The undoped CsPbBr 3 NCs show sharp green emission peaking at 515 nm (fwhm ∼24 nm). Whereas Eu 2+ :CsPbBr 3 NCs show two emission peaks at 498 and 442 nm with fwhm ∼20 and ∼13 nm, respectively. A shift in the green emission of doped NCs is because of reduced average particle size from 19 to 7 nm. The additional emission peak at 442 nm is assigned due to the 4f 6 ( 7 F J )5d 1 → 4f 7 transition of Eu 2+ ions. The intensities of blue and green emissions are both significantly influenced by changing the excitation wavelengths. The decay dynamics study suggests an energy transfer from CsPbBr 3 to the Eu 2+ ions. It is also inferred that Eu 2+ doping improves the radiative channels. Further, the CIE coordinate analysis depicts virtuous luminous efficacy of the optical radiation and significant color purity (>85%) of the emission spectra under different excitations. These optical studies show that the Eu 2+ :CsPbBr 3 NCs can be a potential candidate for multicolor LEDs, displays, and anticounterfeiting applications.

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Section: Time-resolved Photoluminescence (Trpl) Studymentioning

confidence: 99%