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Encapsulation of organic light-emitting devices using a perfluorinated polymer
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Image of FIG. 1.

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FIG. 1.

(a) Molecular structure of Cytop™. (b) AFM image of a Cytop™ film spin cast on a glass substrate.

Image of FIG. 2.

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FIG. 2.

Ca thin film optical transmission test for single polymer barrier films of PVAc (blue line), PMMA (red line), and CYTOP (green line). The temperature was and the RH was 60% for all of these runs.

Image of FIG. 3.

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FIG. 3.

(a) LEFET (Refs. 17 and 18) encapsulated with Cytop™ before (blue circles) and after water immersion for 2 min (red circles). (b) OLED encapsulated with Cytop™ before (blue circles) and after water immersion for 3 min (red circles). (c) OLED encapsulated with Cytop™ before (blue circles) and after exposure to water droplets on the Cytop™ film surface for 4 min (red circles).

Image of FIG. 4.

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FIG. 4.

Continuous operation at , 60% RH, and a fixed current of 0.5 mA for an OLED without a barrier layer (blue line), an OLED with PVAc (red line), an OLED with PMMA (purple run), and an OLED with Cytop™ (green line).

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/content/aip/journal/apl/93/19/10.1063/1.3006349
2008-11-12
2014-04-24

Abstract

Films of Cytop™, a perfluorinated polymer, are spin cast as a single barrier layer for evaluation of barrier properties on organic light-emitting devices and on Ca thin films. Cytop™ is water repellant, resulting in encapsulated organic light-emitting field effect transistors and organic light-emitting diodes(OLEDs), which remain active even after immersion into water or exposure to water droplets on the Cytop™ surface. OLEDs encapsulated with Cytop™ exhibit up to five times longer continuous operation under identical environmental and driving conditions compared with devices that are not encapsulated with Cytop™.

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Scitation: Encapsulation of organic light-emitting devices using a perfluorinated polymer
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/19/10.1063/1.3006349
10.1063/1.3006349
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