Vanadium doping induces surface morphological changes of CuInS2 thin films deposited by chemical spray pyrolysis

Logu, T.; Sankarasubramanian, K.; Soundarrajan, P.; Archana, J.; Hayakawa, Y.; Sethuraman, K.

doi:10.1016/j.jaap.2016.09.019

Cited by 30 publications

(16 citation statements)

References 35 publications

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“…By comparison, we can draw a conclusion that the coexistence of organic thiol and the Cr source precursor leads to the formation of 2D doped MoO 2.5 (OH) 0.5 nanosheets morphologies. This is also a new example of doping-induced morphological structure changes. ,, On the basis of above experimental results, a “doping-adsorption” strategy was presented to elucidate the formation of 2D Cr-doped MoO 2.5 (OH) 0.5 nanosheets, as shown in Figure a,b.…”

Section: Resultsmentioning

confidence: 99%

“…This is also a new example of doping-induced morphological structure changes. 26,28,29 On the basis of above experimental results, a "doping-adsorption" strategy was presented to elucidate the formation of 2D Cr-doped MoO 2.5 (OH) 0.5 nanosheets, as shown in Figure 2a,b.…”

Section: Resultsmentioning

confidence: 99%

“…Generally speaking, the cycling performance and rate properties of TM oxides are strongly dependent on their composition, electronic structure, and microstructures. The heteroatom doping of anode materials was demonstrated to be an effective strategy in tuning the electronic structure and electrochemical properties. − This can dramatically enhance their electrochemical performance. Among the various dopants, chromium (Cr) is considered as an interesting candidate because of its small atomic size, low valance, and electron-donating ability. ,, So far, no report has been reported on the substitution and doping of MoO 2.5 (OH) 0.5 .…”

Section: Introductionmentioning

confidence: 99%

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Two-Dimensional Cr-Doped MoO_2.5(OH)_0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Lu¹,

Yang²,

Li³

et al. 2019

ACS Appl. Mater. Interfaces

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α-MoO 3 has gained growing attention as an anode material of lithium-ion batteries (LIBs) because it has a high theoretical specific capacity of 1111 mA h g −1 and unique layer structure. However, the electrochemical reactions of MoO 3 exhibit sluggish kinetics and structural instability caused by pulverization during charge and discharge. Herein, we report new two-dimensional Cr-doped MoO 2.5 (OH) 0.5 (doped MoO 2.5 (OH) 0.5 ) ultrathin nanosheets prepared by a facile hydrothermal process. The formation of the ultrathin nanosheets was clarified by a "doping-adsorption" model. Compared with doped MoO 3 , doped MoO 2.5 (OH) 0.5 has larger expanded spacing of the {0l0} crystal planes for fast Li + storage. The electrodes after cycling were investigated by ex situ transmission electron microscopy in combination with Xray photoelectron spectroscopy analysis to reveal the reversible conversion reaction mechanism of doped MoO 2.5 (OH) 0.5 nanosheets. Interestingly, for doped MoO 2.5 (OH) 0.5 nanosheet electrodes, it was found that the as-formed intermediate Li x MoO 3 nanodots were well-dispersed in the mesoporous amorphous matrix and had an expanded (040) crystal plane after 10 cycles. These unique structural features increased the effective surface of intermediate products Li x MoO 3 to react with Li + and shortened the diffusion length and thus promoted the electrochemical reactions of doped MoO 2.5 (OH) 0.5 . Additionally, the presence of Cr also played a critical role in the reversible decomposition of Li 2 O and enhanced specific capacity. When employed as an anode in LIBs, doped MoO 2.5 (OH) 0.5 nanosheets show superior reversible capacity (294 mA h g −1 at 10 A g −1 after 2000 cycles). Moreover, the reversible capacity after electrochemical activation is quite stable throughout the cycling, thereby presenting a potential candidate anode material for LIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Two-Dimensional Cr-Doped MoO_2.5(OH)_0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Lu¹,

Yang²,

Li³

et al. 2019

ACS Appl. Mater. Interfaces

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“…%), nanosheets were again deformed into nanocubes (Figure S3a–g). On doping, the transitions in the nanosheet morphology could be reasoned to the serious lattice distortions in the NiSe 2 unit cell, which is a consequence of the difference in the ionic radius of the dopants significantly altering the growth mechanism. , Interestingly, on dual doping V (6.48 at. %) and S (0.84 at.…”

Section: Resultsmentioning

confidence: 99%

Maximizing Redox Charge Storage via Cation (V)–Anion (S) Dual Doping on Nickel Diselenide Nanodiscs for Hybrid Supercapacitors

Lalwani

Karade

Eum

et al. 2021

ACS Appl. Energy Mater.

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Dual doping of the cation–anion in the layered nanomaterials can be an effective strategy to precisely address the chief electrochemical barriers in achieving maximum energy and power for supercapacitor materials. To reap the maximum benefits from the above approach, we synthesized vanadium and sulfur dual-doped nickel diselenide (V, S-NiSe2) nanodiscs on carbon cloth. The X-ray photoelectron spectroscopy results strongly suggested the key role of S as a second dopant in assisting V (with low electronegativity) to alter the electron density around Ni. This shift of electron density from V with the assistance of S facilitated maximum transfer of charge from Ni also promoting rapid redox reactions, which is supported by a 22% increment in b-value (0.62), 89% electro active sites, and 2.4 times swift diffusion of the OH– ions. In addition, V, S-NiSe2 nanodiscs also presented an excellent charge storage of 1464 F g–1@1 A g–1 and a good rate capability of 70% until 20 A g–1, exceeding those of NiSe2 and V-doped NiSe2. In relation, a hybrid supercapacitor cell is also fabricated by assembling the V, S-NiSe2 with an activated carbon electrode, presenting a remarkable energy density of 28.0 W h kg–1 at a power density of 714.7 W kg–1 with reputable cycling stability.

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“…It can be used as a photoconductor, as a material in the dry cells and hetero junctions for photovoltaic electric generators [4] in the preparation of green/red phosphors, manufacture of picture tubes for color televisions [5] and as absorber films in thin-film solar cells [6]. Different methods are reported for the preparation of CuInS 2 thin films, such as chemical bath deposition (CBD) [7], chemical spray pyrolysis (CSP) [8], electro deposition [9], sputtering [10] and etc. Films prepared using many of these techniques exhibit diffusion of copper during junction fabrication with indium sulfide [11].…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology and Electrical Conductivity of In2S3 thin films Doped with Copper

Ebrahiminejad

Asgary

Masoudi

et al. 2022

Preprint

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In the present work, the electrical properties and morphology of In2S3 thin films have been investigated. Also, the results have been carried out for In2S3 thin films doped with Cu. The effect of variation the temperature has been studied on the morphology of In2S3 thin films by using the AFM images. Thin films conductivity has been strongly influenced by Cu doping content, and temperature changing. Also, the electrical properties of these samples have been considered. Also, these properties have been analyzed for In2S3 thin films doped with Cu at the specific temperature. The results show that In2S3 thin films at lowest temperature has the maximum scattering component of transmission probability. Also, effect of different values of Cu () which has been doped in In2S3 thin films have been studied, as it increased, the transmission probability and current density of these thin films have been increased.

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Vanadium doping induces surface morphological changes of CuInS2 thin films deposited by chemical spray pyrolysis

Cited by 30 publications

References 35 publications

Two-Dimensional Cr-Doped MoO_2.5(OH)_0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Two-Dimensional Cr-Doped MoO_2.5(OH)_0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Maximizing Redox Charge Storage via Cation (V)–Anion (S) Dual Doping on Nickel Diselenide Nanodiscs for Hybrid Supercapacitors

Surface Morphology and Electrical Conductivity of In2S3 thin films Doped with Copper

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Vanadium doping induces surface morphological changes of CuInS2 thin films deposited by chemical spray pyrolysis

Cited by 30 publications

References 35 publications

Two-Dimensional Cr-Doped MoO2.5(OH)0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Two-Dimensional Cr-Doped MoO2.5(OH)0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Maximizing Redox Charge Storage via Cation (V)–Anion (S) Dual Doping on Nickel Diselenide Nanodiscs for Hybrid Supercapacitors

Surface Morphology and Electrical Conductivity of In2S3 thin films Doped with Copper

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Product

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Two-Dimensional Cr-Doped MoO_2.5(OH)_0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries

Two-Dimensional Cr-Doped MoO_2.5(OH)_0.5 Nanosheets: A Promising Anode Material for Lithium-Ion Batteries