Impact of TiO2 on structural and spectral properties of ZnS-MoS2 nanocomposites

Bismuth ion (Bi3+) sensitized, europium ion (Eu3+) activated La2Zr2O7 nanophosphors are prepared successfully by simple wet chemical method. Strong blue emission of singly doped La2Zr2O7 with Bi3+ was observed at 310 nm excitation, its wide emission spectrum has a peak maximum at 465 nm ascribed to electronic transition 3P1 → 1S0 of Bi3+. The recorded photoluminescence spectra of y at% Eu3+ codoped La2Zr2O7, when excited at 285 nm, the emission spectrum exhibits maximum peaks at wavelength values 615 nm, 646 nm and 665 nm which are ascribed to 5D0 → 7F2, 5D0 → 7F3 and 5D0 → 7F4 transitions of Eu3+ respectively. The chromaticity coordinates for the optimized sample were found to be (0.519, 0.329). Sensitizing with Bi3+ can affect the luminescence properties of La2Zr2O7:Eu3+ phosphors. With reference to the change in Eu3+ concentration from Y = 1, 2, 3, 4 and 5%, color tunable luminescence from blue to orange, red of La2Zr2O7:Bi3+,Eu3+ phosphors are observed. The lifetime decay values, energy level description and CIE chromatic color coordinates for Bi3+, Eu3+ in La2Zr2O7:Bi3+,Eu3+ codoped sample was discussed. The spectral overlap between sensitizer, activator ions confirms the efficient energy transfer from Bi3+ to Eu3+ in La2Zr2O7:Bi3+,Eu3+ codoped sample and is via a dipole‐quadruple mechanism.

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“…The corresponding color correlated temperature (CCT) values are evaluated by using the formula given in equation 6. [ 70–72 ]

CCT goodbreak= goodbreak- 437 n^{3} goodbreak+ 360 normall n^{2} goodbreak- 6861 n goodbreak+ 5514.31

where n is given by ( x − x e )/( y − y e ) with x e = 0.3320 and y e = 0.1858 as standard values.…”

Section: Resultsmentioning

confidence: 99%

Tunable luminescence from Bi³⁺ sensitized La₂Zr₂O₇:Eu³⁺ red nanophosphors for display applications

Kumar

Venkatarao

Shaik³

et al. 2022

Luminescence

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“…The position of the peaks is slightly shifted as a result of the substitution of Zn atoms in the MoS2 structure [43]. Zn-S bonding is responsible for an absorption peak at 601 cm -1 [44]. The Zn-S bond's typical absorption peak, at 654 cm -1 in the FTIR spectra of doped samples, verifies the presence of Zn-Sulfide in nanoparticles [44].…”

Section: Ftir Analysismentioning

confidence: 90%

“…Zn-S bonding is responsible for an absorption peak at 601 cm -1 [44]. The Zn-S bond's typical absorption peak, at 654 cm -1 in the FTIR spectra of doped samples, verifies the presence of Zn-Sulfide in nanoparticles [44].…”

Section: Ftir Analysismentioning

confidence: 92%

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Study of Structural, Optical and Electrical properties of Zn- doped MoS 2 Nanomaterials for their Supercapacitor Applications

Shahid,

Ali

2024

Preprint

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MoS2 i.e., a semiconductor material has promising electrochemical properties, in the field of supercapacitors. Since molybdenum disulfide (MoS2) possesses special electrical, mechanical, and chemical properties, it has attracted a lot of attention for its use in supercapacitors. The current state of play and obstacles in using MoS2-based materials to supercapacitor technology are examined in this research. In this research, Zn doped MoS2 with different concentrations of Zn (2%, 7%, 12%) have been synthesized by Sol-Gel technique. To assess several characteristics of synthesized materials different characterization techniques such as X-ray Diffraction (XRD), Fourier Transformation Infrared Spectroscopy (FTIR), UV-Visible (UV-Vis.) spectroscopy and Scanning Electron Microscopy (SEM) were applied. The XRD patterns showed the Hexagonal structure confirming the successful formation of the material. Furthermore, the optical properties such as absorption and bandgap of the synthesized nanomaterials and composite were determined by UV-Vis. Spectroscopy. SEM indicates the sheets like morphology of the synthesized ZnXMoS2−x. CV and EIS measurements indicate the good electrochemical performance of the synthesized material. The electrode's supercapacitive measurements reveal a high specific capacitance of 1959 F/g for MoS2 while 2304.89 F/g for ZnXMoS2−x respectively at the scan rate of 10 mV/s. EIS measurements were taken from “Nyquist” plot indicating a decrease in resistances of modified electrodes of the samples. The impedance in ZnX(12%)MoS2 − X reduced to half than undoped MoS2.

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Solid State Reaction Method for Nanomaterials Synthesis: A Comprehensive Review on Characterization, Properties, and Applications

Basha,

Cole,

Divakaran

et al. 2024

Springer Proceedings in Materials

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Impact of TiO2 on structural and spectral properties of ZnS-MoS2 nanocomposites

Cited by 4 publications

References 17 publications

Tunable luminescence from Bi³⁺ sensitized La₂Zr₂O₇:Eu³⁺ red nanophosphors for display applications

Tunable luminescence from Bi³⁺ sensitized La₂Zr₂O₇:Eu³⁺ red nanophosphors for display applications

Study of Structural, Optical and Electrical properties of Zn- doped MoS 2 Nanomaterials for their Supercapacitor Applications

Solid State Reaction Method for Nanomaterials Synthesis: A Comprehensive Review on Characterization, Properties, and Applications

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Impact of TiO2 on structural and spectral properties of ZnS-MoS2 nanocomposites

Cited by 4 publications

References 17 publications

Tunable luminescence from Bi3+ sensitized La2Zr2O7:Eu3+ red nanophosphors for display applications

Tunable luminescence from Bi3+ sensitized La2Zr2O7:Eu3+ red nanophosphors for display applications

Study of Structural, Optical and Electrical properties of Zn- doped MoS 2 Nanomaterials for their Supercapacitor Applications

Solid State Reaction Method for Nanomaterials Synthesis: A Comprehensive Review on Characterization, Properties, and Applications

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Product

Resources

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Tunable luminescence from Bi³⁺ sensitized La₂Zr₂O₇:Eu³⁺ red nanophosphors for display applications

Tunable luminescence from Bi³⁺ sensitized La₂Zr₂O₇:Eu³⁺ red nanophosphors for display applications