Development of ultra-high-efficiency pure red light-emitting devices with enhanced color representationDGIST Professor Jiwoong Yang's team in the Energy Science and Engineering Department has successfully manufactured high-performance, skin-attachable perovskite pure red light-emitting devices to create various forms of wearable displays.
In previous perovskite fabrication processes, surface modification was performed using iodine , a halogen element. However, the research team replaced iodine with bromine , a halogen element with higher electronegativity, and increased the size of the perovskites beyond the original dimensions.
Professor Moon Kee Choi from UNIST added,"The newly developed light-emitting devices are expected to be widely applied not only inKyunghoon Lee et al, Highly efficient pure red light-emitting diodes through surface bromination of CsPbI3 perovskite nanocrystals for skin-attachable displays,: Development of ultra-high-efficiency pure red light-emitting devices with enhanced color representation retrieved 8 May 2024 from https://phys.org/news/2024-05-ultra-high-efficiency-pure-red.