Novel Chemical Vapour Deposition Routes to Nanocomposite Thin Films

Binions, Russell; Parkin, Ivan P.

doi:10.5772/14095

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…Scanning electron microscopy (SEM) shown in Figure revealed a highly textured surface for all films. This is suggestive of a Volmer–Weber island growth mechanism, which is typical for films grown via AACVD, and is indicative of a greater affinity of the precursor toward the growing film than toward the substrate . Cross-sectional SEM enabled thickness measurements of the films.…”

Section: Resultsmentioning

confidence: 83%

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Reflective Silver Thin Film Electrodes from Commercial Silver(I) Triflate via Aerosol-Assisted Chemical Vapor Deposition

Dixon

Manzi

Powell

et al. 2018

ACS Appl. Nano Mater.

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The growth of metallic silver films by aerosol-assisted chemical vapor deposition at atmospheric pressure for use as thin film electrodes or reflective layers in optoelectronic stacks has been studied using the self-metallization of silver(I) trifluoromethanesulfonate (silver(I) triflate, [Ag(SO3CF3)]) during chemical vapor deposition under nitrogen, air and 5% H2/N2. The deposition behaviour of the triflate from a methanolic solution was observed with respect to film thickness between 170 and 240 nm, while the dependence of electrical resistivity between ρ = 2.8 × 10 0 and 5.0 × 10-5 Ω cm on nanocrystallite diameter between 38 and 44 nm indicated a grain boundary-limited charge carrier propagation mechanism arising from insular film growth. Furthermore, increased nanocrystallite size reduced specular optical reflectance from 11 to 3 %. The thermal stability of silver(I) triflate as compared with other silver precursors enabled deposition at elevated temperatures with maximum growth rates of 11 nm min-1 , representing a manifold increase over many previously reported Ag thin film chemical vapor deposition processes on non-metallic substrates. Nanocrystallite diameter was directly proportional to film thickness, such that control over thickness enabled control over surface texture, electrical resistivity and specular optical reflectivity.

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Section: Resultsmentioning

confidence: 83%

“…This is suggestive of a Volmer-Weber island growth mechanism which is typical for films grown via AACVD, and is indicative of a greater affinity of the precursor towards the growing film than towards the substrate. 33 Crosssectional SEM enabled thickness measurements of the films. Examples of these are shown in Figure 4.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Reflective Silver Thin Film Electrodes from Commercial Silver(I) Triflate via Aerosol-Assisted Chemical Vapor Deposition

Dixon

Manzi

Powell

et al. 2018

ACS Appl. Nano Mater.

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“…All chemical vapour deposition reactions involve a number of steps. The main steps are as follows: precursor, generation of active gaseous reactant species; transport, delivering the precursor into the reaction chamber; adsorption of the precursor onto the hot surface; decomposition of the precursor to give the atom needed for the film and organic waste; migration of atoms to a strong binding site; nucleation that leads to the growth of the thin film; desorption of unwanted side products; and removal of unwanted products [30,31]. However, it is possible to Journal of Nanomaterials achieve this in two steps especially using rotary chemical vapor deposition (RCVP) [32].…”

Section: Fabrication Of Nanostructured Materialsmentioning

confidence: 99%

Design and Synthesis of Nanostructured Materials for Sensor Applications

Noah

2020

Journal of Nanomaterials

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There has been an increasing demand for the development of sensor devices with improved characteristics such as sensitivity, low cost, faster response, reliability, rapider recovery, reduced size, in situ analysis, and simple operation. Nanostructured materials have shown great potential in improving these properties for chemical and biological sensors. There are different nanostructured materials which have been used in manufacturing nanosensors which include nanoscale wires (capability of high detection sensitivity), carbon nanotubes (very high surface area and high electron conductivity), thin films, metal and metal oxide nanoparticles, polymer, and biomaterials. This review provides different methods which have been used in the synthesis and fabrication of these nanostructured materials followed by an extensive review of the recent developments of metal, metal oxides, carbon nanotubes, and polymer nanostructured materials in sensor applications.

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“…44 Aerosol-assisted chemical vapor deposition (AACVD), removes the barrier of volatility on the precursor and increase the number of available carrying fluids, thus allowing huge numbers of unconventional precursor systems to be considered, though the requirement of solubility remains. [45][46][47][48][49][50] An approach to combine the tunability of AACVD with the industrialability of APCVD would be significantly desirable.…”

Section: Introductionmentioning

confidence: 99%

Aerosol Multicoated Graphene Nanoplatelets/Nano Si Composite as Anodes in Li-Ion Batteries

Zhao¹,

Gonzalez²,

Dallagnese³

et al. 2020

Preprint

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Silicon has been investigated as promising anode materials in lithium-ion batteries due to its high theoretical specific capacity. Nonetheless, high-capacity Si nanoparticles succumb to limited electrical conductivity, drastic volume change, and harsh aggregation upon cycling. In this paper, a unique multicoated composite is fabricated through innovative, simple, atmospheric pressure, and cost-effective atmospheric pressure aerosol-assisted vapor deposition (APAAVD). The fabrication method is reported for the first time with a well-distributed graphene nanoplatelets/nano-silicon composite layer through the processing with an organic solvent. The plane of the layers facilitates high rate capability, whereas the voids between the layers buffer volume expansion of silicon for good cycling performance. The multicoated composite anode (10 wt.% Si) presents a specific capacity of ~500 mAh g-1 at 0.17 A/g and capacity retention of 85.8 % after 500 discharge/charge cycles. The facile method preserves the combined advantages of atmospheric pressure chemical vapor deposition and aerosol-assisted chemical vapor deposition, offering an encouraging research arena for initial laboratory tests in rechargeable Li-ion batteries. Besides, two approaches for the presentation of cyclic discharge/charge patterns are proposed with generalized algorithms through linear algebra.

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Novel Chemical Vapour Deposition Routes to Nanocomposite Thin Films

Cited by 5 publications

References 45 publications

Reflective Silver Thin Film Electrodes from Commercial Silver(I) Triflate via Aerosol-Assisted Chemical Vapor Deposition

Reflective Silver Thin Film Electrodes from Commercial Silver(I) Triflate via Aerosol-Assisted Chemical Vapor Deposition

Design and Synthesis of Nanostructured Materials for Sensor Applications

Aerosol Multicoated Graphene Nanoplatelets/Nano Si Composite as Anodes in Li-Ion Batteries

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