title: Enhanced light extraction efficiency in organic light-emitting diode with randomly dispersed nanopattern.
abstract: An optical scattering layer composed of randomly dispersed nanopatterns (RDNPs) was introduced in an organic light-emitting diode (OLED) to increase the out-coupling efficiency. An RDNP was fabricated by direct printing on a glass substrate. Owing to its low haze and high transmittance, the RDNP acted as a light extraction layer in the OLED. The RDNP OLEDs showed higher current density and luminance than the reference devices at the same voltage. The current and power efficiencies of the RDNP OLED increased by 25% and 34%, respectively, without electrical degradation. Furthermore, the RDNP devices achieved an external quantum efficiency of 27.5% at 1 mA/cm².
authors.forename: Yang Doo
authors.initials: YD
authors.lastname: Kim
authors.forename: Kyung-Hoon
authors.initials: KH
authors.lastname: Han
authors.forename: Young Hoon
authors.initials: YH
authors.lastname: Sung
authors.forename: Jung-Bum
authors.initials: JB
authors.lastname: Kim
authors.forename: Hak-Jong
authors.initials: HJ
authors.lastname: Choi
authors.forename: Heon
authors.initials: H
authors.lastname: Lee
authors.forename: Jang-Joo
authors.initials: JJ
authors.lastname: Kim