Bae, Wan Ki Lim, Jaehoon Zorn, Matthias Kwak, Jeonghun Park, Young-Shin Lee, Donggu Lee, Seonghoon Char, Kookheon Zentel, Rudolf Lee, Changhee 2024-01-20T09:32:22Z 2024-01-20T09:32:22Z 2021-09-04 2014-07 2050-7526 https://pubs.kist.re.kr/handle/201004/126660 We demonstrate QLEDs implementing wider active layers (50 nm) based on QD-conducting polymer nanohybrids, which exhibit a stable operational device performance across a wide range of current densities and brightness. A comparative study reveals that the significant suppression of efficiency roll-off in the high current density regime is primarily attributed to a sufficient charge carrier distribution over the wider active layer and improved charge carrier balance within QDs enabled by the hybridization of QDs with conducting polymers. Utilization of this finding in future studies should greatly facilitate the development of high performance, stable QLEDs at high current density or luminance regime toward displays or solid-state lighting applications. English ROYAL SOC CHEMISTRY NANOCRYSTAL SOLIDS CHARGE INJECTION DEVICES LAYERS Reduced efficiency roll-off in light-emitting diodes enabled by quantum dot-conducting polymer nanohybrids Article 10.1039/c4tc00232f 1 JOURNAL OF MATERIALS CHEMISTRY C, v.2, no.25, pp.4974 - 4979 JOURNAL OF MATERIALS CHEMISTRY C 2 25 4974 4979 scie scopus 000337129700010 2-s2.0-84902177854 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article NANOCRYSTAL SOLIDS CHARGE INJECTION DEVICES LAYERS quantum dot conducting polymer organic-inorganic hybrids roll-off