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Issue 21, 2014
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Multilayer thin film encapsulation for organic light emitting diodes

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Abstract

A transparent and effective thin film encapsulation (TFE) based on a multilayer structure is demonstrated. Alternate films of amorphous and crystalline film forming organic materials have been investigated to create complicated diffusion pathways for oxygen and water vapour, which was reflected in their increased barrier properties. These layers are further protected by an inorganic barrier coating of magnesium fluoride (MgF2) deposited by normal and glancing angle deposition methods. A significant enhancement of more than 8 times in the lifetime of organic light emitting diodes was obtained by employing this multilayer hybrid geometry. The TFE structure can be highly useful in organic opto-electronic devices requiring easy to deposit and an effective barrier layer for enhanced lifetimes.

Graphical abstract: Multilayer thin film encapsulation for organic light emitting diodes

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Article information


Submitted
24 Oct 2013
Accepted
23 Dec 2013
First published
02 Jan 2014

RSC Adv., 2014,4, 10808-10814
Article type
Paper
Author version available

Multilayer thin film encapsulation for organic light emitting diodes

R. Grover, R. Srivastava, M. N. Kamalasanan and D. S. Mehta, RSC Adv., 2014, 4, 10808
DOI: 10.1039/C3RA46077K

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