Duan, Lian Chin, Byung Doo Yang, Nam Choul Kim, Mu-Hyun Kim, Hye Dong Lee, Seong Taek Chung, Ho Kyoon 2024-01-21T01:03:48Z 2024-01-21T01:03:48Z 2021-09-02 2007-05 0379-6779 https://pubs.kist.re.kr/handle/201004/134432 Employment of multilayer heterostructures is a common approach to achieve efficiency and stable organic light emitting diodes (OLEDs). In this work, we report multilayer blue polymer light-emitting devices (PLEDs) by using spin-coated fluorene-triarylamine copolymers as interlayers between the conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT) and the emitting layer. A blue PLED with stepped hole injection profile yields an external quantum efficiency of 6.0% at a luminance of 9500 cd/m(2) at 5.5 V and an extrapolated lifetime of more than 18,000 h from 100 cd/m(2). (c) 2007 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA INDIUM-TIN-OXIDE DIODES INTERFACE Multilayer blue polymer light-emitting devices with spin-coated interlayers Article 10.1016/j.synthmet.2007.03.011 1 SYNTHETIC METALS, v.157, no.8-9, pp.343 - 346 SYNTHETIC METALS 157 8-9 343 346 scie scopus 000248430000004 2-s2.0-34250759939 Materials Science, Multidisciplinary Physics, Condensed Matter Polymer Science Materials Science Physics Polymer Science Article INDIUM-TIN-OXIDE DIODES INTERFACE blue-emitting polymer interlayer exciplex charge balance stability