Photoluminescence properties of monodispersed Mn2+ doped ZnS nanoparticles prepared in high temperature

Murugadoss, Govindhasamy; Rajamannan, B.; Ramasamy, V.

doi:10.1016/j.molstruc.2011.02.026

Cited by 28 publications

(16 citation statements)

References 24 publications

(25 reference statements)

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“…The PL spectrum of ZnS nanocrystals exhibits a sharp blue emission band located at 498 nm. This blue emission at 498 nm could be attributed to a recombination of electrons at sulfur vacancy donor level with holes at the zinc vacancy acceptor level (Murugadoss et al 2011). However, on Ce 3?…”

Section: Resultsmentioning

confidence: 95%

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

et al. 2013

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Cerium-doped zinc sulfide nanorods with flower-shaped morphology have been successfully synthesized in air atmosphere through simple chemical precipitation method. The incorporation of Ce 3? was confirmed by X-ray diffraction and energy-dispersive spectrum. The doping of Ce 3? ions has significant influence on the optical properties of the synthesized rods. UVVis absorption spectroscopy measurements have shown that the absorption peak of doped ZnS was red shifted compared to undoped ZnS. Photoluminescence measurements reveal that luminescence intensity of Ce 3? was enhanced considerably by the energy transfer from ZnS. The existence of functional groups was identified using Fourier transform infrared spectrometer. Field emission scanning electron microscope results show a uniform growth pattern of the nanorods with flowerlike structure. High resolution transmission electron microscopy results showed that the doped ZnS nanocrystals are composed of uniform nanorods with average diameter of 22 nm and length of 140 nm. The thermal stability of the nanorods was confirmed using thermo gravimetric and differential thermal analysis.

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Section: Resultsmentioning

confidence: 95%

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

et al. 2013

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“…The transmission spectra show above 90% transmittance in the wavelength range of 200-1000 nm. The UV-Vis absorption spectrum shows sharp absorption edge at 250 nm, which can be assigned to an excitonic transition and proves the existence of ZnS nanoparticles (Murugadoss et al, 2011). From the absorption edge of ZnS:Mn nanocrystals, we obtained a band gap of 4.78 eV which is different from the bulk band gap value of ZnS (3.68 eV).…”

Section: Optical Propertiesmentioning

confidence: 78%

“…By extrapolating the straight portion of the graph on hν axis, the optical band gap is measured. The obtained values of the bandgap of ZnS:Mn nanoparticles (5.12 eV) are higher than that of the bulk value of ZnS (3.68 eV) (Murugadoss et al, 2011). Figure 4 showed the room temperature emission spectra of Zn 0.9 Mn 0.1 S nanocrystals under excitation of 250 nm.…”

Section: Optical Propertiesmentioning

confidence: 88%

“…Because of these characteristics, this semiconductor which has wider band gap (3.68 eV) is possible to be applied in optoelectronic applications such as optical switches, sensors, electroluminescence devices, biomedical tags, nanophosphors (Monica and Lokendra, 2010;Murugadoss et al, 2011;Xiying et al, 2011). Actually, Mn 2+ -doped ZnS nanoparticles have been first reported in 1983 but this ZnS:Mn nanoparticles still have been studied because of their potential applications in future generation due to their extraordinary properties.…”

Section: Introductionmentioning

confidence: 99%

“…Actually, Mn 2+ -doped ZnS nanoparticles have been first reported in 1983 but this ZnS:Mn nanoparticles still have been studied because of their potential applications in future generation due to their extraordinary properties. In producing ZnS:Mn thin film, various technique especially chemical procedures have been mostly used, for example chemical bath deposition, electrochemical fabrication, solvotherma, microemulsion, sol gel method, organometallic methods, passivation procedure, liquid solid solution (Murugadoss et al, 2011;Xiying et al, 2011). Numerous compound semiconductor nanocrystals have been synthesized using sol gel method has often been reports previously (Yahya et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Nanocrystalline Zn<sub>0.9</sub>Mn<sub>0.1</sub>S Thin Film: Case Studies

Ab-Rahman¹,

Arif

Ehsan

et al. 2011

American Journal of Applied Sciences

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Problem statement:The high quality of ZnS:Mn nanocrystals is important in nanotechnology industries. The perfect chemical procedure is significant to produce the best of nanocrystals. Hence, this research is concern on the good chemical method in processing manganese doped zinc sulphide nanocrystals. Approach: For the first step, Mn doped ZnS nanocrystals were synthesized by using sol gel spin coating method. After the crystals were obtained, the properties of ZnS:Mn 2+ on morphology, optical and electrical were determined by using Field Emission Scanning Electron Microscopy (FE-SEM), Ultra Violet Visible Spectroscopy (UV-Vis), Photoluminescence Spectrophotometer (PL) and current-voltage measurement (I-V). Results: The particle has diameter size around 22 nm. In this experiment it was found that the current increases with the increasing of applied voltage (-10 V to 10 V). UV-Vis spectra shows appearance of an absorption peak at 250 nm meanwhile in PL analysis spectra, the sample has been recorded at room temperature and two emissions peaks at blue and orange emissions were observed. Conclusion: Manganese doped zinc sulphide was successfully synthesized using sol gel spin coating method and it performs in good quality.

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Optical and structural characterization of CdS/ZnS and CdS:Cu²⁺/ZnS core–shell nanoparticles

Murugadoss

Kumar

2013

Luminescence

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Core-shell CdS/ZnS (Zn 0.025-0.125 M) and CdS:Cu(2+) (1%)/ZnS nanoparticles were successfully synthesized using a chemical method. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR TEM), photoluminescence (PL) and UV/Visible (UV/Vis) techniques were used to characterize the novel CdS/ZnS and CdS:Cu(2+) /ZnS core-shell nanoparticles. All absorption peaks of the synthesized samples were highly blue-shifted from the bulk CdS and ZnS. Very narrow and symmetric PL emission was observed in the yellow region for core-shell CdS/ZnS. Furthermore, the PL emission of CdS/ZnS was tuned into orange region by incorporate the Cu ion into the core CdS lattice.

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Photoluminescence properties of monodispersed Mn2+ doped ZnS nanoparticles prepared in high temperature

Cited by 28 publications

References 24 publications

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

Nanocrystalline Zn<sub>0.9</sub>Mn<sub>0.1</sub>S Thin Film: Case Studies

Optical and structural characterization of CdS/ZnS and CdS:Cu²⁺/ZnS core–shell nanoparticles

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Photoluminescence properties of monodispersed Mn2+ doped ZnS nanoparticles prepared in high temperature

Cited by 28 publications

References 24 publications

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

Nanocrystalline Zn<sub>0.9</sub>Mn<sub>0.1</sub>S Thin Film: Case Studies

Optical and structural characterization of CdS/ZnS and CdS:Cu2+/ZnS core–shell nanoparticles

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Product

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Optical and structural characterization of CdS/ZnS and CdS:Cu²⁺/ZnS core–shell nanoparticles