Development of Passive and Active Barrier Coatings on the Basis of Inorganic–Organic Polymers

Amberg-Schwab, Sabine; Weber, Ulrike; Burger, A.; Nique, Somchith; Xalter, Rainer

doi:10.1007/s00706-006-0466-4

Cited by 53 publications

(41 citation statements)

References 1 publication

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“…The commercially supplied polymer films that are used as flexible substrates, such as Poly(Ethylene Terephthalate) (PET) and Poly(Ethylene Naphthalate) (PEN), exhibit permeability values for oxygen transmission rate (OTR) and for water vapour transmission rate (WVTR) of 10 [2,[9][10][11][12][13]. That is since the barrier response of the inorganic coatings is defined by their lattice disorder that results from the deposition process.…”

Section: Introductionmentioning

confidence: 99%

“…This disorder has the form of macroand nano-defects (pinholes and micro-cracks) that are formed during the growth process of the inorganic thin films by physical vapour deposition methods such as sputtering and evaporation. These 4 defects provide easy pathways for moisture and oxygen permeation, thus limiting the barrier performance of the inorganic film/polymer substrate system [2,[9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…The combination of hybrid polymers with inorganic layers can overcome the above drawbacks leading to the leads to a significant improvement of the barrier properties of the whole material structure. This is the result of the synergetic effect of the confinement of the permeation to the defect zones of the inorganic layer, and the formation of chemical bonds between the hybrid polymer and the inorganic layer [9,10,11,13].…”

Section: Introductionmentioning

confidence: 99%

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Ultra high barrier materials for encapsulation of flexible organic electronics

Logothetidis

Laskarakis

Georgiou

et al. 2010

Eur. Phys. J. Appl. Phys.

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The encapsulation of the active layers (organic semiconductors, electrodes, transparent conductive oxides, etc.) of Organic Electronic devices developed onto flexible polymeric substrates is one of the most challenging issues in the rapidly emerging area of Organic Electronics. The importance for the protection of the active layers arises from the fact that these are very sensitive when they are subjected to the atmosphere, since the permeation of the atmosphere's water vapour (H 2 O) and oxygen (O 2 ) gases induces corrosion effects, film delamination and finally, failure of the organic electronic device. In addition, the encapsulation layers contribute to the long-term stability of the whole device enabling its use in outdoor environments (e.g. in the case of flexible photovoltaic cells-OPVs). A promising approach for the encapsulation of flexible organic electronics includes the development of multilayers that consist of hybrid polymer materials and inorganic layers onto flexible polymeric substrates, such as Poly(Ethylene Terephthalate) (PET). This approach leads to a significant improvement of the barrier performance of the whole structure, due to the synergetic effect of the confinement of the permeation to the defect zones of the inorganic layer, and the formation of chemical bonds between the hybrid polymer and the inorganic layer. The knowledge of their optical properties and their correlation with their barrier performance are of major importance since it will contribute Supprimé : response Supprimé : response 2 towards the optimization of their functionality. In this work, we provide an overview on the results concerning the use of hybrid polymers as ultra high barrier materials and moreover we discuss on the effect of inclusion of SiO 2 nano-particles on their optical properties and barrier performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultra high barrier materials for encapsulation of flexible organic electronics

Logothetidis

Laskarakis

Georgiou

et al. 2010

Eur. Phys. J. Appl. Phys.

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“…Oxygen barrier coatings were achieved by using dielectric barrier discharge on vinyltriethoxysilane under ambient conditions [19]. Another approach to an oxygen barrier involved a hybrid layer with n-octyltriethoxysilane over an active layer that acts as an oxygen scavenger [20].…”

Section: Background Of ''Ormosils''mentioning

confidence: 99%

Erratum to: Organic–inorganic hybrid melting gels

Klein

Jitianu

2011

J Sol-Gel Sci Technol

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Melting gels are a class of organically modified silica gels that are rigid at room temperature, flow at temperature T1 and consolidate at temperature T2 (T2 [ T1), when crosslinking is complete. The process of (a) softening, (b) becoming rigid and (c) re-softening can be repeated many times. Mixtures of mono-substituted alkoxysilanes and di-substituted alkoxysilanes have been studied in a systematic way to identify suitable melting gel compositions. The mixtures and the resulting melting gels have been characterized for their softening temperatures and consolidation temperatures. With an interest in using these materials for sealing microelectronics, their physical properties have been measured.

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“…These films show a preferential permeation of atmospheric gas molecules at defects sites, with different size (nano-, micro-and macro-defects) [7]. Hybrid (inorganic-organic nano-composite) barrier materials are synthesized via the sol-gel processes from organoalkoxysilanes, and they have strong covalent or ionic-covalent bonds between the inorganic and organic phases [8][9][10][11]. These materials combine the properties of their constituents such as low processing temperatures, high optical Inorganic-organic hybrid polymers are used as barrier coatings in order to protect flexible electronic devices from the permeation of atmospheric oxygen and water vapour that induce oxidation to the Flexible Electronic Device (FED) organic layers, reducing their operation, efficiency and stability.…”

mentioning

confidence: 99%

Investigation of the optical properties of organic‐inorganic hybrid polymers by IR to Vis‐fUV spectroscopic ellipsometry

Logothetidis

Laskarakis

Georgiou

et al. 2008

Phys. Status Solidi (c)

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Inorganic-organic hybrid polymers are used as barrier coatings in order to protect flexible electronic devices from the permeation of atmospheric oxygen and water vapour that induce oxidation to the Flexible Electronic Device (FED) organic layers, reducing their operation, efficiency and stability. In this work, Spectroscopic Ellipsometry (SE) in a wide spectral region, from the infrared (IR) (900-4000 cm-1) to the Vis-far UV (1.5-6.5 eV) has been implemented in order to investigate the optical properties of different types of hybrid polymers, which are synthesized via the sol-gel technique onto Polyethylene Terephthalate (PET), SiOx/PET and AlOx/PET substrates. The analysis of the measured SE spectra revealed valuable information about the electronic and vibrational response as well as the cross-linking mechanisms that control the interface and barrier properties of these materials. Finally, the correlation of the optical properties with the synthesis parameters and th e barrier response of these materials will significantly contribute towards their optimization in order to be used as high barrier coatings

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Development of Passive and Active Barrier Coatings on the Basis of Inorganic–Organic Polymers

Cited by 53 publications

References 1 publication

Ultra high barrier materials for encapsulation of flexible organic electronics

Ultra high barrier materials for encapsulation of flexible organic electronics

Erratum to: Organic–inorganic hybrid melting gels

Investigation of the optical properties of organic‐inorganic hybrid polymers by IR to Vis‐fUV spectroscopic ellipsometry

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