Defect-related blue emission from ultra-fine Zn1−xCd
                x
              S quantum dots synthesized by simple beaker chemistry

Mohapatra, Jeotikanta

doi:10.1186/2228-5326-3-31

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…Hirai et al reported that the stress (or pressure) on the compounds causes the alteration in relative intensities and lattice strain [26]. It is also reported that increase in lattice parameter leads to shift the XRD peaks toward lower Bragg angle and vice versa [27]. Hence, the increase in lattice parameter was supported by the shifting of XRD peaks toward lower Bragg's angle in treated Mg 3 N 2 sample.…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 49%

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

Ind Eng Manage

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Magnesium nitride (Mg 3 N 2 ) has gained extensive attention due to its catalytic and optoelectronic properties. The present investigation was aimed to evaluate the effect of biofield energy treatment on physical and thermal properties of Mg 3 N 2 powder. The Mg 3 N 2 powder was divided into two parts i.e. control and treated. The control part was remained as untreated and the treated part was subjected to the Mr. Trivedi's biofield energy treatment. Subsequently, the control and treated Mg 3 N 2 samples were characterized using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The DSC results showed the specific heat capacity of 2.24 Jg -1°C-1 in control, which increased upto 5.55 Jg -1°C-1 in treated Mg 3 N 2 sample. The TGA data revealed that the onset temperature for the formation of magnesium oxide, possibly due to oxidation of Mg 3 N 2 in the presence of air and moisture, was reduced from 421.0°C (control) to 391.33°C in treated sample. Besides, the XRD data revealed that the lattice parameter and unit cell volume of treated Mg 3 N 2 samples were increased by 0.20 and 0.61% respectively, as compared to the control. The shifting of all peaks toward lower Bragg angle was observed in treated sample as compared to the control. The XRD diffractogram also showed that the relative intensities of all peaks were altered in treated sample as compared to control. In addition, the density of treated Mg 3 N 2 was reduced by 0.60% as compared to control. Furthermore, the crystallite size was significantly increased from 108.05 nm (control) to 144.04 nm in treated sample as compared to the control. Altogether data suggest that biofield energy treatment has substantially altered the physical and thermal properties of Mg 3 N 2 powder. Thus, the biofield treatment could be applied to modulate the catalytic and optoelectronic properties of Mg 3 N 2 for chemical and semiconductor industries.

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Section: X-ray Diffraction (Xrd)supporting

confidence: 49%

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

Ind Eng Manage

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“…This could be attributed to comparable electronegativity values of Zn (1.6) and Cd (1.7) atom [10]. The patterns of the Au/CdZnS indicated the crystalline peaks at 38° corresponding to (111) peak [11,12].…”

Section: Resultsmentioning

confidence: 73%

“…Further we have also evaluated the lattice parameter values of the Cd x Zn 1−x S and the graphs shown the linear decrease in the lattice constant values for the addition of Zn 2+ ions. [14].…”

Section: Resultsmentioning

confidence: 99%

Bandgap engineering and plasmonically enhanced sun light photocatalyis in Au/Cd1−xZnxS nanocomposites

Gotipamul

Rajan

Khanna

et al. 2021

J Mater Sci: Mater Electron

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Metal nanoparticles incorporated semiconductor nanomaterials generally holds a series of advantages especially enhanced electron-hole pair lifetime and thus exhibits superior solar energy conversions. In this study, we report a facile solution processing of Au incorporated Cd 1-x Zn x S, where x = 0, 0.25, 0.5, 0.75 & 1, nanocomposites and their enhanced photocatalytic applications. The Au/CdZnS nanocomposites were investigated for their structural, morphological, optical and photocatalytic properties. The XRD patterns indicated the crystalline sizes of CdZnS are found to fall with the range of 1-3 nm. The electron microscopic images publicized the average particle size of Cd 0.25 Zn 0.75 S is 4 nm. The bandgap values of pristine CdS, pristine ZnS, Cd 0.75 Zn 0.25 S, Cd 0.5 Zn 0.5 S and Cd 0.25 Zn 0.75 S are 2.21 eV, 3.4 eV, 2.29 eV, 2.31 eV and 2.53 eV, respectively. The optical band gap of the CdZnS nanomaterials have got reduced for Au incorporation due to the occurrence of red shift and the enhanced visible region absorption for the inclusion of Au. The visible light photocatalytic effect of the nanocomposites have been evaluated with methylene blue (MB) dye degradation reaction under sunlight light exposure. The Au incorporated Cd 0.25 Zn 0.75 S nanocompound had exhibited 97 % of photocatalytic degradation of MB dye molecules which is 20% higher than the bare Cd 0.25 Zn 0.75 S nanocompound.

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“…The properties of CdS thin films can be tuned to suit various applications by introducing different amounts of other elements such as zinc. This technique has been used to obtain graded bandgap junctions and lattice matched heterostructures [8][9][10][11][12][13][14][15][16][17]. Theoretically, the bandgap of CdS films can be altered from 2.4 eV to 3.5 eV by introducing zinc in various ratios [10].…”

Section: Introductionmentioning

confidence: 99%

The effects of Zn incorporation on electrical, photoluminescence and spectral sensitivity of SILAR deposited CdS thin films

Ashitha¹,

Priya²,

Ali³

et al. 2020

Mater. Res. Express

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The SILAR deposited CdS films were incorporated with various concentrations of zinc using zinc acetate and zinc chloride precursors. The presence of zinc was found to alter the crystal structure and energy bandgap of the films. The bandgap increased by nearly 44% with the increase of zinc concentration in the films. The photoluminescence spectra of the films revealed the presence of several localized defects levels within the forbidden bandgap. The peak spectral response wavelength was found to vary from 500 nm to 400 nm with the increase of zinc. The photocurrent was found to increase with the Cd:Zn ratio. The films with relatively high concentrations of zinc were found to be better suited for the photodetector applications due to their higher photocurrent to dark current ratio.

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Defect-related blue emission from ultra-fine Zn1−xCd x S quantum dots synthesized by simple beaker chemistry

Cited by 11 publications

References 18 publications

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

Bandgap engineering and plasmonically enhanced sun light photocatalyis in Au/Cd1−xZnxS nanocomposites

The effects of Zn incorporation on electrical, photoluminescence and spectral sensitivity of SILAR deposited CdS thin films

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