Kim, Hong Hee Shim, Jae Won You, Young-Jun Lee, Yeon Ju Park, Cheolmin Hwang, Do Kyung Choi, Won Kook 2024-01-20T02:03:23Z 2024-01-20T02:03:23Z 2021-09-01 2017-02 2050-7526 https://pubs.kist.re.kr/handle/201004/123051 Fabrication of highly flexible, inverted, indium tin oxide (ITO)-free top-emitting quantum-dot light-emitting diodes (QDLEDs) on elastic polyurethane (PU) substrates is reported here. To cope with the irregular surfaces of the PU substrate, polyvinyl alcohol (PVA) is used as a buffer layer. By adopting the PVA buffer layer, we demonstrate red-color and green-color top-emitting QDLEDs that show turn-on voltages from 4.0 V to 4.5 V, and maximum luminance values of 1200 cd m−2 (red) and 4800 cd m−2 (green). In addition, when the QDLEDs are stuck on the curved surfaces (vials and a tumbler), the devices still exhibit a clear light emission. These highly flexible QDLEDs can pave the way for further development of next-generation wearable or attachable displays, or solid-state lighting. English Royal Society of Chemistry Highly flexible inverted-quantum-dot light-emitting diodes on elastic polyurethane substrates Article 10.1039/c6tc04310k 1 Journal of Materials Chemistry C, v.5, no.7, pp.1596 - 1600 Journal of Materials Chemistry C 5 7 1596 1600 N scie scopus 000395890600004 2-s2.0-85013042120 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article EFFICIENT TEXTILES DEVICES MULTILAYER TRANSISTOR ZNO highly flexible quantum-dot light-emitting diodes (QDLEDs) elastic polyurethane (PU) wearable or attachable displays