EPR and photoluminescence properties of Mn2+ doped CdS nanoparticles synthesized via co-precipitation method

Gupta, Atul; Kripal, Ram

doi:10.1016/j.saa.2012.07.038

Cited by 40 publications

(13 citation statements)

References 30 publications

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“…As outstanding luminescent properties are achieved by incorporation of rare earth or transition metals like Ce, Eu, Mn, Cu, etc. in SNs, consequently they have attracted enormous interest 7,8 . Besides, emission in visible or infrared from SNs due to incorporation of fluorescent dopants may mitigate toxicity problems in bio-imaging applications.…”

Section: Introductionmentioning

confidence: 99%

Influence of Ag doping concentration on structural and optical properties of CdS thin film

Kumar¹,

Saxena²,

Ágarwal³

et al. 2015

AIP Conference Proceedings

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This work shows the influence of Ag concentration on structural properties of pulsed laser deposited nanocrystalline CdS thin film. X-ray photoelectron spectroscopy (XPS) studies confirm the dopant concentration in CdS films and atomic concentration of elements. XPS studies show that the samples are slightly sulfur deficient. GAXRD scan reveals the structural phase transformation from cubic to hexagonal phase of CdS without appearance of any phase of CdO, Ag 2 O or Ag 2 S suggesting the substitutional doping of Ag ions. Photoluminescence studies illustrate that emission intensity increases with increase in dopant concentration upto 5% and then decreases for higher dopant concentration.

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Section: Introductionmentioning

confidence: 99%

Influence of Ag doping concentration on structural and optical properties of CdS thin film

Kumar¹,

Saxena²,

Ágarwal³

et al. 2015

AIP Conference Proceedings

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“…In the absorption spectrum, an absorption peak was observed at approximately 245 nm near the onset absorption as shown in the inset of Figure a. This absorption peak can be assigned to the first excitonic (1s–1s) transition . Absorption with a maxima appeared at approximately 483 nm can be ascribed as the optical transition from the first excitonic state, as shown in Figure b.…”

Section: Resultsmentioning

confidence: 86%

“…This absorption peak can be assigned to the first excitonic (1s-1s) transition. [17] Absorption with a maxima appeared at approximately 483 nm can be ascribed as the optical transition from the first excitonic state, [18] as shown in Figure 2b. These absorption peaks related to the excitonic levels indicate that strong exciton-phonon interactions existed in the CdS NWs.…”

Section: Structural and Optical Characterization Of Cds Nwsmentioning

confidence: 98%

Enhanced anharmonic phonon coupling and decay dominated by low‐energy phonons in CdS nanowires

Iqbal

Saeed

et al. 2019

J Raman Spectroscopy

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Low‐energy optical phonons with energy in the order of that of acoustic phonons are readily populated at room temperature, and therefore, they play a key role in thermal, electronic, and thermo‐electric fundamental processes in a solid material. High‐quality crystalline cadmium sulfide (CdS) nanowires with a diameter of several tens of nanometer and a length up to several micrometers (3–5 μm) demonstrate strong exciton–phonon coupling. This strong coupling interaction allows us to observe low‐energy optical phonons and their anharmonic couplings to high‐energy phonon modes. In this study, second and higher order multiphonons related to the E2low phonon were observed in near resonance Raman scattering condition (excitation wavelength of 532 nm). The clear observation of the multiphonon modes makes it possible to study composite phonon anharmonic decay. The experimental results show that low‐energy phonons (both optical and acoustical) dominate anharmonic phonon decay in CdS.

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“…For different concentration of dopant (Mn 2? ), sharp peaks in the range of 234-238 nm were observed [46]. Chawla et al [47] have also observed such an excitonic peak at 230 nm.…”

Section: Absorption Spectramentioning

confidence: 88%

Synthesis, characterization and optical properties of cobalt and lanthanide doped CdS nanoparticles

Khajuria

Sanotra

Ladol

et al. 2015

J Mater Sci: Mater Electron

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Cadmium sulphide (CdS) nanoparticles doped with Co 2? and co-doped with Co 2? and rare earth metallic ions have been prepared by co-precipitation method. The synthesized nanoparticles have been characterized by X-ray powder diffraction studies, energy dispersive X-ray analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible spectroscopy, particle size by dynamic light scattering and photoluminescence studies. The X-ray diffraction results indicate that CdS nanoparticles can be co-doped with cobalt and rare earth metallic ions without altering XRD pattern. The particle size calculated from XRD results is in range of 40-50 nm. SEM results show that the synthesized particles are spherical in shape and TEM results reveal that synthesized particles have a very small size nearing to Bohr radius for bulk CdS. Absorption spectra of all the samples show strong blue shift from bulk CdS. Interesting luminescence characteristics have been observed for co-doped CdS nanoparticles at room temperature. The relative fluorescence intensity of co-doped samples is significantly higher than that of undoped and Co 2? doped CdS nanoparticles.

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EPR and photoluminescence properties of Mn2+ doped CdS nanoparticles synthesized via co-precipitation method

Cited by 40 publications

References 30 publications

Influence of Ag doping concentration on structural and optical properties of CdS thin film

Influence of Ag doping concentration on structural and optical properties of CdS thin film

Enhanced anharmonic phonon coupling and decay dominated by low‐energy phonons in CdS nanowires

Synthesis, characterization and optical properties of cobalt and lanthanide doped CdS nanoparticles

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