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The photoluminescence properties of a periodically structured organic light-emitting diode are presented. Patterning is achieved using an original single-step autostructuration technique based on photoinduced effects in azo-polymer films. We show that single beam laser irradiation can lead to the induction of regular two-dimensional surface relief gratings. The waveguide properties of these microstructures as well as their effect on the emission properties of a light-emitting material are studied. We demonstrate a new straightforward technique to improve external light emission efficiency by outcoupling part of the light that was initially guided into the different diode layers.
Published in:
Applied Physics Letters
(Volume:87
,
Issue:
19
)
Date of Publication: Nov 2005
- Page(s):
- 191105 - 191105-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.2126793
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Nov 2005
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