A research team, spearheaded by Associate Professor Han Sanyang from the Tsinghua Shenzhen International Graduate School and in partnership with researchers from Heilongjiang University and the National University of Singapore, has engineered an 'energy conversion coating' for rare earth nanocrystals. By employing surface modification techniques and organic-inorganic hybridization strategies, they have effectively channeled exciton energy to lanthanide ion luminophores. This innovative approach has successfully tackled the fundamental challenges associated with exciton generation, transport, and injection in the realm of electroluminescence. As a result, they have achieved highly efficient electroluminescence characterized by high color purity and adjustable spectra. The research outcomes have been published in the prestigious journal Nature. This groundbreaking accomplishment not only propels the application of rare earth luminescence forward in the fields of flexible displays and near-infrared devices but also paves the way for potential future applications in human health monitoring, non-invasive detection, and crop supplemental lighting.