High-barrier films for flexible organic electronic devices

Georgiou, D.; Logothetidis, S.

doi:10.1016/b978-1-78242-035-4.00005-1

Cited by 4 publications

(1 citation statement)

References 51 publications

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“…For example, water vapor barrier films are essential to many devices under development, such as organic lightemitting diode (OLED), electronic paper, and organic thin film transistor (TFT), 1) in order to prevent their damage by moisture. Currently, film producers, such as Vitex and 3M, [2][3][4][5] are using organic and inorganic multilayers to produce water vapor barrier films. However, the moisture barrier films with water vapor transmission rates (WVTRs) as low as 10 À4 g m À2 day À1 require the stacking of at least 4 dyads, and the stacking barrier films usually suffer from high internal stress and low throughput issues when the number of dyads is more than 4.…”

Section: Introductionmentioning

confidence: 99%

Transparent Ultrahigh-Strength Moisture Barrier Film Fabricated by Lamination Process

Lin¹,

Chen²,

Guo³

et al. 2013

Jpn. J. Appl. Phys.

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Multilayer barrier films were fabricated by stacking multiple pairs of inorganic and organic layers on organic-treated poly(ethylene terephthalate) (PET) substrates. The inorganic and organic moisture barrier layers were prepared by plasma-enhanced chemical vapor deposition (PECVD) and bar coating, respectively, at room temperature. The water vapor transmission rate (WVTR) through six pairs of inorganic/organic stacking layers can reach 2.1×10-5 g m-2 day-1. By laminating two PET substrates, both coated with two pairs of inorganic/organic barrier layers, individually achieving a WVTR of 5 ×10-3 g m-2 day-1, an ultrahigh-strength moisture barrier film could be produced with the WVTR significantly lowered to as much as 4×10-5 g m-2 day-1, which was in the same order of magnitude as a single PET film coated with six pairs of inorganic/organic stacking layers. Even after bending 5,000 times, the laminated barrier film maintained not only the high moisture barrier strength but also the good optical transparency and flexibility. The possible reason for the significant improvement of the moisture barrier strength by lamination is also proposed.

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Section: Introductionmentioning

confidence: 99%

Transparent Ultrahigh-Strength Moisture Barrier Film Fabricated by Lamination Process

Lin¹,

Chen²,

Guo³

et al. 2013

Jpn. J. Appl. Phys.

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A Review on Emerging Barrier Materials and Encapsulation Strategies for Flexible Perovskite and Organic Photovoltaics

Sutherland

Weerasinghe

Simon

2021

Advanced Energy Materials

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Perovskite solar cells (PSCs) and organic photovoltaics (OPVs) have undergone rapid development within the last decade, exhibiting exciting properties such as high efficiency, flexibility, and the potential for large‐scale fabrication through roll‐to‐roll (R2R) processing. Despite this, operational stability is recognized to be an ongoing challenge as prolonged device lifetimes are scarcely observed. This instability can be narrowed down to both “intrinsic degradation” and “extrinsic degradation,” with exposure to moisture and oxygen having detrimental effects on device performance. A means of delaying the degradation of flexible PSC and OPV devices is through barrier encapsulation. Despite glass encapsulation exhibiting ideal barrier properties, the potential for flexible devices and high‐throughput R2R fabrication requires the development of flexible barrier materials and encapsulation strategies. These barriers must demonstrate outstanding moisture permeation resistance, high transparency, chemical and thermal stability, and must be able to withstand repeated mechanical deformation. Herein, the fundamental principles of PSC and OPV devices are initially discussed, highlighting the degradation mechanisms and current stability obstacles. A review of the latest flexible barrier materials and encapsulation strategies follows, introducing stability studies that have been undertaken on flexible PSCs and OPV, along with suggestions as to the direction that future research may take.

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Progress on Preparing High Barrier Films by Roll-To-Roll Electron Beam Evaporation

陈¹

2022

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High-barrier films for flexible organic electronic devices

Cited by 4 publications

References 51 publications

Transparent Ultrahigh-Strength Moisture Barrier Film Fabricated by Lamination Process

Transparent Ultrahigh-Strength Moisture Barrier Film Fabricated by Lamination Process

A Review on Emerging Barrier Materials and Encapsulation Strategies for Flexible Perovskite and Organic Photovoltaics

Progress on Preparing High Barrier Films by Roll-To-Roll Electron Beam Evaporation

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