Fokina, Ana Lee, Yeonkyung Chang, Jun Hyuk Park, Myeongjin Sung, Younghun Bae, Wan Ki Char, Kookheon Lee, Changhee Zentel, Rudolf 2024-01-20T03:31:16Z 2024-01-20T03:31:16Z 2021-09-05 2016-09-20 2196-7350 https://pubs.kist.re.kr/handle/201004/123665 The influence of the morphology of quantum dot (QD)-semiconducting polymer hybrid emission layers on the performance of quantum dot-based light emitting diodes (QLEDs) is systematically investigated. Chemically grafted QD-semiconducting polymer hybrids are fabricated by the ligand exchange procedure between CdSe/Cd(x)Zn(1-x)SQDs and a new block copolymer consisting of a carbazole-based electroactive block with a low highest occupied molecular orbital level and a disulfide-based anchor block. The performance of QLEDs with hybrid emission layers is compared with QLEDs utilizing QD-only and physically mixed QD/polymer emission layers. It is shown that only in the emission layers formed by chemically grafted hybrids QDs are evenly distributed throughout the semiconducting polymer matrix. This leads to improved charge transport balance and suppressed photoluminescence quenching of QDs. As a result, hybrid QLEDs with the peak external quantum efficiency of 5.6% and the peak luminance of 21 707 cd m(-2) which outperform the conventional devices with QD-only emission layers are fabricated. English WILEY AUGER RECOMBINATION SHELL THICKNESS HIGH-EFFICIENCY DEVICES NANOCRYSTALS INJECTION BRIGHT The Role of Emission Layer Morphology on the Enhanced Performance of Light-Emitting Diodes Based on Quantum Dot-Semiconducting Polymer Hybrids Article 10.1002/admi.201600279 1 ADVANCED MATERIALS INTERFACES, v.3, no.18 ADVANCED MATERIALS INTERFACES 3 18 scie scopus 000386055800015 2-s2.0-84978898683 Chemistry, Multidisciplinary Materials Science, Multidisciplinary Chemistry Materials Science Article AUGER RECOMBINATION SHELL THICKNESS HIGH-EFFICIENCY DEVICES NANOCRYSTALS INJECTION BRIGHT conducting polymers hybrid materials light-emitting diodes quantum dots surface modification