Park, JH Lim, YT Park, OO Yu, JW Kim, JK Kim, YC 2024-01-21T07:39:53Z 2024-01-21T07:39:53Z 2021-09-02 2004-01-05 0928-4931 https://pubs.kist.re.kr/handle/201004/137935 Light-emitting devices based on environmentally stable, blue-emitting polymer/dielectric nanolayer nanocomposites were fabricated by blending poly(di-octylfluorene) (PDOF) with organo-clay. By reducing the excimer formation that leads to long wavelength tails, the photoluminescence (PL) and electroluminescence (EL) color purity of the device was enhanced. When a conjugated polymer/dielectric nanolayer nanocomposite is applied to an EL device, we expect an electronic structure similar to the well-known quantum well in small nanodomains. The ratio of PDOF/organo-clay was regulated from 2:1 to 0.5:1 (w/w). The light-emitting device of 0.5:1 (w/w) blend demonstrated the highest quantum efficiency (QE), 0.72% (ph/el), which is similar to 500 times higher value compared with that of the pure PDOF layer device. However, the driving voltage of the nanocomposite devices tended to increase with increasing organo-clay content. (C) 2003 Elsevier B.V All rights reserved. English ELSEVIER SCIENCE BV POLYFLUORENE DERIVATIVES PHOTOLUMINESCENCE ELECTROLUMINESCENCE COPOLYMERS DIODES Enhanced quantum efficiency in blue-emitting polymer/dielectric nanolayer nanocomposite light-emitting devices Article 10.1016/j.msec.2003.09.039 1 MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, v.24, no.1-2, pp.75 - 78 MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS 24 1-2 75 78 scie scopus 000187969700018 2-s2.0-0347477272 Materials Science, Multidisciplinary Materials Science Article; Proceedings Paper POLYFLUORENE DERIVATIVES PHOTOLUMINESCENCE ELECTROLUMINESCENCE COPOLYMERS DIODES light-emitting devices polyfluorenes nanocomposite