Low temperature synthesis of MoS2 and MoO3:MoS2 hybrid thin films via the use of an original hybrid sulfidation technique

Ftouhi, Hajar; Lamkaouane, Hind; Louarn, G.; Diani, Mustapha; Bérnède, J.C.; Addou, M.; Cattin, Linda

doi:10.1016/j.surfin.2022.102120

Cited by 8 publications

(4 citation statements)

References 41 publications

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“…The application of this hybrid as the hole transport layer in the planar heterojunction solar cells gives better results when the atomic percentage of MoS 2 in the hybrid layer does not exceed 5 %, which corresponds to 65% of the MoO 3 atomic percentage; therefore, the presence of a high MoS 2 content (>5%), which means low MoO 3 concentrations in the hybrid MoO 3 :MoS 2, could limit the positive effect of the hybrid layer when used as HTL. Taking into account these previously obtained results, the presence of such a high MoO 3 percentage of about 65% in the MoO 3 :MoS 2 layer as HTL is beneficial for enhancing the photovoltaic performances due to the improvement of the band matching at the electrode and photoactive layer interface [24]. On the basis of this finding, we can conclude that controlling the atomic percentage of such a component of the hybrid layer is necessary to achieve good device performances when the hybrid is introduced; thus, the successful control of the composition achieved in the present work could open up the use of the hybrid prepared by wet chemical synthesis as the hole transport layer (HTL) in the organic solar cells.…”

Section: Resultsmentioning

confidence: 63%

“…This indicates the importance of controlling the hybrid composition. Therefore, in our work, the idea behind the use of H 2 O 2 as an oxidizer is to discover and provide a controlled method to synthesize the MoO 3 :MoS 2 hybrid thin layer and to reach a high content percentage of MoO 3 in the prepared hybrid thin film [24]. The free organic solvent liquid phase exfoliation was adopted to obtain MoS 2 nanoflakes, and a homogeneous hybrid layer was grown on a flexible substrate from aqueous dispersion via simple coating/centrifugation techniques.…”

Section: Introductionmentioning

confidence: 99%

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Efficient and Facile Synthetic Route of MoO3:MoS2 Hybrid Thin Layer via Oxidative Reaction of MoS2 Nanoflakes

et al. 2022

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In the present study, MoO3:MoS2 hybrid thin layers have been synthesized through partial oxidation of MoS2. We have demonstrated that the reaction requires darkness conditions to decrease the oxidation rate, thus obtaining the hybrid, MoO3:MoS2. A simple liquid-phase exfoliation (LPE) is carried out to achieve homogenous MoS2 nanoflakes and high reproducibility of the results after MoS2 oxidation. XPS analyses reveal the presence of MoO3, MoS2, and MoOxSy in the hybrid layer. These results are also confirmed by X-ray diffraction and high-resolution TEM. Optical absorbance reveals that the absorption peaks of the MoO3:MoS2 hybrid are slightly redshifted with the appearance of absorption peaks in the near-infrared region due to the defects created after the oxidation reaction. The composition and atomic percentages of each component in the hybrid layer as a function of reaction time have also been reported to give perspective guides for improving electronic and optoelectronic devices based on 2D-MoS2.

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Section: Resultsmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Efficient and Facile Synthetic Route of MoO3:MoS2 Hybrid Thin Layer via Oxidative Reaction of MoS2 Nanoflakes

et al. 2022

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“…This is why lower V oc and J sc were observed in our case. [ 29 ] However, the overall MoO 3 performance was better, and we used it as HTL for further simulations. In addition, the thickness variation of HTL does not show any significant variation in PSC parameters so we fixed 200 nm as the optimized thickness for our HTL (Table S2, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Efficiency Improvement of Lead‐Free La₂NiMnO₆‐Based Double Perovskite Solar Cells Using Numerical Simulation

Rehman,

Almufarij,

Sahar

et al. 2024

Energy Tech

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In this work, the efficiency of lead‐free La2NiMnO6 (LNMO)‐based double perovskite solar cells is optimized using solar cell capacitance simulator (SCAPS‐1D). Herein, the device performance is boosted by using different combinations of electron‐transport layers, hole‐transport layers, absorber layer thickness, acceptor doping density, acceptor defect density, and bandgap tuning, and by modifying the electron affinity. To make the device more realistic, the performance of the proposed device is carefully modified in the presence of interface defect density ≈10−13 cm−3, series resistance ≈1 Ω cm2, and shunt resistance ≈6000 Ω cm2, respectively. From the findings, the optimized device exhibits a record open‐circuit voltage = 1.23 V, short‐circuit current density = 27.18 mA cm−2, fill factor = 87.14%, and power conversion efficiency = 29.20% for FTO/SnO2/LNMO/MoO3/Au configuration. Finally, the device performance is tested under different working temperatures, and 300 K is found as the best temperature for the device.

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“…Studies have shown that MoO 3 with low shear modulus and self-lubricating effect is generated on the wear scar surface during the friction process [31], resulting in the low friction coe cient of the Cr-Mo-N lm. Layered MoO 3 is the well-known self-lubricant tribo-phase to enhance the friction performance [32].…”

Section: Discussionmentioning

confidence: 99%

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Kong,

Luan,

2024

Preprint

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The Cr-Mo-N films of different Mo contents are developed by the RF (Radio Frequency) magnetron sputtering. The XRD (X-ray Diffraction), SEM (Scanning Electron Microscope), EDS (Energy Dispersive Spectroscopy), nano-indenter and tribo-tester will be used to analyze the composition, phase structure, mechanical and tribological properties of films. The results reveal that the Cr-Mo-N film adopts a face-centered cubic structure, primarily oriented along the (111) plane. When the Mo content falls below 17.72%, increasing the Mo concentration leads to a slight increase in film microhardness, accompanied by a significant decrease in the average friction coefficient. On the contrary, exceeding a Mo content of 22.76% triggers structural changes within the film. These alterations are reinforced by solid solution and fine grain strengthening, further compounded by the presence of Mo2N. Consequently, film microhardness undergoes a considerable increase, while the average friction coefficient remains relatively stable irrespective of Mo content. This underscores the consistent low friction coefficient characteristic exhibited by Mo2N films.

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Low temperature synthesis of MoS2 and MoO3:MoS2 hybrid thin films via the use of an original hybrid sulfidation technique

Cited by 8 publications

References 41 publications

Efficient and Facile Synthetic Route of MoO3:MoS2 Hybrid Thin Layer via Oxidative Reaction of MoS2 Nanoflakes

Efficient and Facile Synthetic Route of MoO3:MoS2 Hybrid Thin Layer via Oxidative Reaction of MoS2 Nanoflakes

Efficiency Improvement of Lead‐Free La₂NiMnO₆‐Based Double Perovskite Solar Cells Using Numerical Simulation

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

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Low temperature synthesis of MoS2 and MoO3:MoS2 hybrid thin films via the use of an original hybrid sulfidation technique

Cited by 8 publications

References 41 publications

Efficient and Facile Synthetic Route of MoO3:MoS2 Hybrid Thin Layer via Oxidative Reaction of MoS2 Nanoflakes

Efficient and Facile Synthetic Route of MoO3:MoS2 Hybrid Thin Layer via Oxidative Reaction of MoS2 Nanoflakes

Efficiency Improvement of Lead‐Free La2NiMnO6‐Based Double Perovskite Solar Cells Using Numerical Simulation

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

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Efficiency Improvement of Lead‐Free La₂NiMnO₆‐Based Double Perovskite Solar Cells Using Numerical Simulation