Effect of Mg on Cd0.9−xZn0.1S nanoparticles for optoelectronic applications

Devadoss, I.; Sakthivel, P.

doi:10.1007/s00339-020-03490-w

Cited by 22 publications

(4 citation statements)

References 38 publications

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“…The optical properties for nano ZnO have been changed significantly as it doped with Mg (Heiba et al 2015b). The optical band gap of nano CdTe thin film increased (Kobyakov 2014), while it decreased in PbS or nano Cd 0.9 Zn 0.1 S or nano CdS samples as they doped with Mg (Giribabu et al 1512;Yücel and Beleli 2018;Devadoss and Sakthivel 2020;Sivaraman et al 2014). In this study, the reason for increasing or decreasing the band gap of CdS upon doping with 5%Mg is discussed using DFT calculation.…”

Section: Introductionmentioning

confidence: 82%

“…On the other hand, the optical band gap of Mg-doped materials depends on the kind of the host materials, amount of Mg-doping, the dimension of the sample (1D, 2D or 3D) and the method of preparation. Devadoss et al demonstrated that nano Cd 0.9−x Zn 0.1 Mg x S material could choose for luminescence labels and imaging uses because its wide range of band gap, high optical transmittance and high photoluminescence emission (Devadoss and Sakthivel 2020). Yücel et al found that the band gap of Mg-doped PbS thin film occurred within the solar spectral region (Yücel and Beleli 2018).…”

Section: Introductionmentioning

confidence: 99%

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Optical and electronic correlation in Mg-doped nano cadmium sulfide

Mohamed

Ahmed

2021

Opt Quant Electron

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Nano Cd 0.9 Mg 0.05 S was synthesized applying the thermolysis technique in air and under flow of nitrogen. Samples obtained exhibited CdS structure with two phases. Rietveld refinement analysis was used to determine the different structure parameters. Analysis of UV-Vis absorption spectra disclosed that the optical band gap of CdS sample prepared in N 2 is less than that of the corresponding sample prepared in air. The optical band gap of CdS (air) sample was decreased as it doped with Mg while it increased as Mg doped CdS (N 2 ) sample. The photoluminescence (PL) intensities of CdS samples were enhanced when they doped with Mg. Moreover, the PL intensity of CdS (air) increased further as it prepared under nitrogen. The emitted PL colors (violet, blue and green) depended on the condition of preparation of the different samples. Density functional theory calculation (DFT) was applied to explain the variation in the optical band gap of CdS upon doping with Mg. DFT calculation revealed that the absorption, refractive index, extinction coefficient, the dielectric properties and photoconductivity response were affected by the kind of defects in the sample. Mg-doped stoichiometric or non-stoichiometric CdS have a non-magnetic nature.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Optical and electronic correlation in Mg-doped nano cadmium sulfide

Mohamed

Ahmed

2021

Opt Quant Electron

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“…The average crystallite size (D hkl ) of Cd 0.9 -xZn 0.1 Bi x S (x = 0, 0.01, 0.03, 0.05) QDs was found by using Sherrer's equation, based on the FWHM values [20].…”

Section: Structural Analysismentioning

confidence: 99%

Role of Bi3+ ions on structural, optical, photoluminescence and electrical performance of Cd0.9-xZn0.1BixS QDs

et al. 2021

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In this work, the Cd0.9-xZn0.1BixS QDs with different compositions of Bi3+ ions (0 ≤ x ≤ 0.05) were synthesized using a facile chemical route. The prepared QDs were characterized for analyzing the structural, morphological, elemental, optical, band gap, photoluminescence and electrochemical properties. XRD results confirmed that the Cd0.9-xZn0.1BixS QDs have a cubic structure. The mean crystallite size was increased from ~ 2 to ~ 5 nm for the increase of Bi3+ ions concentration. The optical transmittance behavior was decreased with increasing Bi3+ ions. The scanning electron microscope images showed that the prepared QDs possessed agglomerated morphology and the EDAX confirmed the presence of doped elements as per stoichiometry ratio. The optical band gap was slightly blue-shifted for initial substitution (Bi3+ = 1%) of Bi3+ ions and red-shifted for further increase of Bi3+ compositions. The optical band gap was ranged between 3.76 and 4.0 eV. High intense red emission was received for Bi3+ (1%) doped Zn:CdS QDs. The red emission peaks were shifted to a higher wavelength side due to the addition of Bi3+ ions. The PL emission on UV-region was raised for Bi3+ (1%) and it was diminished. Further, a violet (422 nm) and blue (460 nm) emission were received for Bi3+ ions doping. The cyclic voltammetry analysis showed that Bi3+ (0%) possessed better electrical properties than other compositions of Bi3+ ions.

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“…For instance, V. Krishnakumar et al have employed Mg‐doped CdS for photocatalytic degradation. I. Devadoss et al 32 studied the effect of Mg‐doped Cd 0.9− x Zn 0.1 S nanoparticles for optoelectronic applications. Nonetheless, there is no report available regarding the applicability of Mg‐doped CdS in HSCs.…”

Section: Introductionmentioning

confidence: 99%

Studying the impact of Mg doping on the physical properties of CdS nanocrystals for the fabrication of hybrid solar cells–based organic P3HT : PCBM polymers and inorganic Mg‐doped CdS nanocrystals

Aruna-Devi

Marasamy

Mayén-Hernández

et al. 2021

Intl J of Energy Research

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Summary Herein, the influence of Mg‐doped CdS nanocrystals (NCs) on the performance of hybrid solar cells (HSCs) is investigated for the first time. Pristine and Mg‐doped CdS NCs at different concentrations (0.25, 0.5, and 0.75 mol%) are synthesized using the heating up method. The effect of Mg on structural, compositional, morphological, optical, and electrical properties of CdS NCs is examined. The structural analysis showed a peak shift toward a higher wavelength, while lattice parameters a and c are decreased. As the Mg concentration increases, the shape and size of the CdS NCs are considerably changed, while the bandgap is tuned from 2.66 to 2.44 eV. Besides, the resistivity of CdS is significantly decreased while carrier concentration increases. Then, the device is fabricated with a configuration of FTO/TiO2/P3HT:PC61BM/MoO3/Ag, wherein the influence of different concentrations of undoped and Mg‐doped CdS NCs on the performance of HSCs is explored. The Mg‐doped CdS NCs exhibited a power conversion efficiency of 2.92%, 2.5 times higher than the polymer device. Thus, the results revealed that the Mg doping significantly improved the properties of CdS NCs and the performance of HSCs. Henceforth, this work would provide a new path to enhance the power conversion efficiency of the HSCs in a low‐cost approach.

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Effect of Mg on Cd0.9−xZn0.1S nanoparticles for optoelectronic applications

Cited by 22 publications

References 38 publications

Optical and electronic correlation in Mg-doped nano cadmium sulfide

Optical and electronic correlation in Mg-doped nano cadmium sulfide

Role of Bi3+ ions on structural, optical, photoluminescence and electrical performance of Cd0.9-xZn0.1BixS QDs

Studying the impact of Mg doping on the physical properties of CdS nanocrystals for the fabrication of hybrid solar cells–based organic P3HT : PCBM polymers and inorganic Mg‐doped CdS nanocrystals

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