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Ultraviolet nanoimprinted polymer nanostructure for organic light emitting diode application

Authors :
Jongyoup Shim
Ki-Don Kim
Jang-Joo Kim
Jae Ryoun Youn
Sohee Jeon
Yong-Hee Lee
Jae-Wook Kang
Hyung-Dol Park
Dae-Geun Choi
Ali Ozhan Altun
Se-Heon Kim
Jun-Ho Jeong
Source :
Applied Physics Letters. 92:223307
Publication Year :
2008
Publisher :
AIP Publishing, 2008.

Abstract

Light extraction efficiency of a conventional organic light emitting diode (OLED) remains limited to approximately 20% as most of the emission is trapped in the waveguide and glass modes. An etchless simple method was developed to fabricate two-dimensional nanostructures on glass substrate directly by using ultraviolet (UV) curable polymer resin and UV nanoimprint lithography in order to improve output coupling efficiency of OLEDs. The enhancement of the light extraction was predicted by the three-dimensional finite difference time domain method. OLEDs integrated on nanoimprinted substrates enhanced electroluminance intensity by up to 50% compared to the conventional device.

Details

ISSN :
10773118 and 00036951
Volume :
92
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........91783a7a50456af99db252d0ed5cbc37
Full Text :
https://doi.org/10.1063/1.2939554