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Updated: Apr 18, 2026
Development of Efficient OLEDs from Solution Deposition
Published on: November 4, 2022
Enhanced light out-coupling efficiency of organic light-emitting diodes with an extremely low haze by plasma treated
Ju Hyun Hwang1, Hyun Jun Lee, Yong Sub Shim
1Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul 136-713, Republic of Korea. bkju@korea.ac.kr.
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.
