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Opt Lett. 2012 Feb 15;37(4):575-7. doi: 10.1364/OL.37.000575.

Enhancement of light extraction efficiency of organic light emitting diodes using nanostructured indium tin oxide.

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  • 1Center for Organic Electronics, National Physical Laboratory (Council of Scientific and Industrial Research), New Delhi, India.

Abstract

Improved outcoupling efficiency of organic light emitting diodes (OLEDs) is demonstrated by incorporating a nanostructured indium tin oxide (NSITO) film between a conducting anode and a glass substrate. NSITO film was fabricated using rf-sputtering at oblique angle (85°). Significant reduction in refractive index and improved transmission of NSITO film was observed. OLEDs were then fabricated onto NSITO film to extract the ITO-glass waveguided modes. Extraction efficiency was enhanced by 80% without introducing any detrimental effects to operating voltage, current density, and angular invariance of emission spectra of OLEDs.

PMID:
22344111
[PubMed]
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