Deposition of transparent and flexible nanolayer barrier on standard coating materials for photovoltaic devices

Rossi, Gabriella; Altavilla, Claudia; Scarfato, Paola; Ciambelli, Paolo; Incarnato, Loredana

doi:10.1016/j.surfcoat.2013.11.042

Cited by 10 publications

(12 citation statements)

References 16 publications

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“…Furthermore, the optical properties of the EFAS nanocoated films are better if compared to CFAS and besides no significant cost differences exist between the two fluoroalkylsilanes. In addition, it should be also considered that CFAS leads to the formation of hydrochloric acid in an intermediate reaction step (Rossi et al 2014), which may represent a drawback in terms of environmental and safety hazard.…”

Section: Resultsmentioning

confidence: 99%

“…In a previous work, we developed a method to obtain flexible and transparent hydrophobic SAM nanocoating using 1H,1H,2H,2H-per-fluorodecyltrichlorosilane as precursor molecule, by means of simple and effective single step process carried out at room temperature applied to Polyethylene terephthalate-silicon oxide (PET-SiOx) substrate (Rossi et al 2014). The hydrophobic nanocoating, which significantly improved the barrier properties of the substrate towards both liquid and gas atmospheric agents (oxygen), also showed a good stability and chemical resistance when applied on both PETSiOx and ETFESiOx substrates (Rossi et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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Effect of time and of precursor molecule on the deposition of hydrophobic nanolayers on ethyelene tetrafluoroethylene–silicon oxide substrates

2016

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A method was developed for generating transparent and hydrophobic nanolayers chemisorbed onto flexible substrates of ethylene tetrafluoroethylene-silicon oxide (ETFE-SiOx). In particular, the effect of the deposition time and of the precursor molecule on the nanocoating process was analyzed with the aim of pursuing an optimization of the above method in an industrial application perspective. It was found that precursor molecule of triethoxysilane allowed to obtain better hydrophobic properties on the SiOx surface in shorter times compared to trichlorosilane, reaching the 92 % of final contact angle (CA) value of 106°after only 1 h of deposition. The optical properties and surface morphology were also assessed in function of time, revealing that an initial transparency reduction is followed by a subsequent transmittance increase during the self assembly of fluoroalkylsilanes on the SiOx surface, coherently with the surface roughness analysis data. Encouraging results were also obtained in terms of oleophobic properties improvement of the nanocoated surfaces.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of time and of precursor molecule on the deposition of hydrophobic nanolayers on ethyelene tetrafluoroethylene–silicon oxide substrates

2016

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“…400-750 nm), while samples with smaller surface features would be expected to effect less scattering of visible light. 50 Likewise, a correlation can be drawn between mean crystallite diameters as determined by XRD and specular reflectivity in Figure 9 whereby smaller crystallites comprise a film with a higher degree of specular reflectance. The apparent shift of a resonance maximum towards longer wavelengths with increasing crystallite diameter is typical of the transition of silver films from insular to continuous and is attributed to increasing electron mean free path length in the films.…”

Section: Uv-visible Spectroscopymentioning

confidence: 91%

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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“…Rossi et al . described the chemisorption of self‐assembled monolayers of perfluoroalkylsilanes on commercial barrier foils consisting of PET‐SiOx (12 µm) and ETFE‐SiOx (100 µm) . Different types of environmental degradation factors were simulated, including acid rains and damp heat.…”

Section: Durability Of Pv Systems and The Role Of Polymersmentioning

confidence: 99%

Polymeric materials for long‐term durability of photovoltaic systems

Griffini

Turri

2015

J of Applied Polymer Sci

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Photovoltaic (PV) technology has evolved rapidly in the past few decades and now encompasses a large variety of materials and device structures. A key aspect to be taken into account in any PV technology is the operational durability of the systems in outdoor conditions. Clearly, loss of performance during operation represents a significant drawback and limitation in the commercialization of this technology. In this context, the large compositional flexibility of polymeric materials as well as their proven easy processability may be of great help in imparting improved durability to PV systems. In this review, a summary on the state of the art and most recent developments in the field of polymeric materials for improved long-term durability of PV devices is presented, with particular emphasis on the use of polymers as encapsulation materials and protective coatings in the field of both PV and lightconcentration systems.

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Deposition of transparent and flexible nanolayer barrier on standard coating materials for photovoltaic devices

Cited by 10 publications

References 16 publications

Effect of time and of precursor molecule on the deposition of hydrophobic nanolayers on ethyelene tetrafluoroethylene–silicon oxide substrates

Effect of time and of precursor molecule on the deposition of hydrophobic nanolayers on ethyelene tetrafluoroethylene–silicon oxide substrates

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

Polymeric materials for long‐term durability of photovoltaic systems

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