Ultraviolet nanoimprinted polymer nanostructure for organic light emitting diode application

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...

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Veröffentlicht in:Applied physics letters 2008-06, Vol.92 (22), p.223307-223307-3
Hauptverfasser: Jeon, Sohee, Kang, Jae-Wook, Park, Hyung-Dol, Kim, Jang-Joo, Youn, Jae R., Shim, Jongyoup, Jeong, Jun-ho, Choi, Dae-Geun, Kim, Ki-Don, Altun, Ali Ozhan, Kim, Se-Heon, Lee, Yong-Hee
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2939554