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Issue 6, 2015
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Enhanced light out-coupling efficiency of organic light-emitting diodes with an extremely low haze by plasma treated nanoscale corrugation

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Abstract

Extremely low-haze light extraction from organic light-emitting diodes (OLEDs) was achieved by utilizing nanoscale corrugation, which was simply fabricated with plasma treatment and sonication. The haze of the nanoscale corrugation for light extraction (NCLE) corresponds to 0.21% for visible wavelengths, which is comparable to that of bare glass. The OLEDs with NCLE showed enhancements of 34.19% in current efficiency and 35.75% in power efficiency. Furthermore, the OLEDs with NCLE exhibited angle-stable electroluminescence (EL) spectra for different viewing angles, with no change in the full width at half maximum (FWHM) and peak wavelength. The flexibility of the polymer used for the NCLE and plasma treatment process indicates that the NCLE can be applied to large and flexible OLED displays.

Graphical abstract: Enhanced light out-coupling efficiency of organic light-emitting diodes with an extremely low haze by plasma treated nanoscale corrugation

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Supplementary files

Article information


Submitted
06 Nov 2014
Accepted
25 Dec 2014
First published
29 Dec 2014

Nanoscale, 2015,7, 2723-2728
Article type
Paper
Author version available

Enhanced light out-coupling efficiency of organic light-emitting diodes with an extremely low haze by plasma treated nanoscale corrugation

J. H. Hwang, H. J. Lee, Y. S. Shim, C. H. Park, S. Jung, K. N. Kim, Y. W. Park and B. Ju, Nanoscale, 2015, 7, 2723
DOI: 10.1039/C4NR06547F

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