2, Samsung Electronics, Seoul, , Korea (the Republic of)
Research on light-emitting devices has developed along with IT industries such as TV and smart phones, focusing on light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs). Recently, as application for general lightings and automotives have expanded, performance has improved in many areas such as luminous efficiency, color rendering, and reliability. However, there is still limitation in the complex process and difficulty in securing price competitiveness. In this study, we demonstrated a light-emitting devices capable of low cost, large area, solution process by using Electrochemiluminescence (ECL) and organic-inorganic hybrid perovskite compound, which are candidates of next generation light sources. All devices can be applied not only to ITO/Glass electrodes but also to flexible electrode such as ITO/PET and silver nanowire network (AgNWs) embedded substrates expected to be applied to flexible and wearable devices in the future. In this work, the luminescence characteristics of red-orange region were confirmed by using ECL of ruthenium complex, and flexible ECL devices were fabricated. In addition, the luminescence characteristics of the green region were confirmed using a perovskite compound of MAPbBr3 which is attracting attention as a next generation light source, and its value as a next generation light-emitting devices was confirmed by applying it to a large area flexible device.