Eu3+ and Cu2+ ions doped ZnS microspheres emission in the yellow–orange region

Sagar, C. K. Krishna; Sajan, P.; Bushiri, M. Junaid

doi:10.1007/s10854-019-02176-1

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…80-0020). 24,25 Furthermore, no extra peaks corresponding to Eu or Ni clusters are observed. The slight variation in lattice parameter values in the doped and co-doped samples regarding pure samples indicate the agglomeration of dopants into the ZnS crystal lattice.…”

Section: Resultsmentioning

confidence: 93%

Synthesis and Properties of Eu and Ni Co-Doped ZnS Nanoparticles for the Detection of Ammonia Gas

Ankinapalli,

G. S.,

Kurugundla

et al. 2024

ECS J. Solid State Sci. Technol.

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Zinc sulfide nanoparticles were synthesized successfully via chemical co-precipitation, both in undoped form and co-doped with Europium (Eu) and Nickel (Ni). All prepared samples exhibited cubic blended structure as confirmed by X-ray diffraction (XRD). The average particle size ranged from 3 to 6 nm for both pure and (Eu, Ni) co-doped ZnS, with no alteration in the crystal structure due to Eu and Ni co-doping. However, increasing the Ni dopant concentration (0, 2, 4, & 6 at. %) while maintaining a constant Eu concentration (4 at. %) led to an enhancement in the crystallite size. This was further validated by transmission electron microscopy (TEM), which showed particle sizes consistent with the XRD findings (3-5 nm). Microscopic analysis via scanning electron microscopy and TEM revealed spherical agglomerated morphology for the (Eu, Ni) co-doped nanoparticles. Energy-dispersive X-ray spectroscopy spectra confirmed the stoichiometric chemical composition of ZnS: Eu, Ni. Photoluminescence studies demonstrated an increased intensity of green luminescence at 6 at.% Ni co-dopant concentration. Moreover, the synthesized samples exhibited promising gas sensing properties, particularly towards ammonia gas, with good selectivity. Notably, both pure and (Eu, Ni) co-doped ZnS nanoparticles showed rapid response and recovery times at room temperature, suggesting their potential applicability in gas sensing applications.

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Section: Resultsmentioning

confidence: 93%