Core Insights - The research addresses the challenge of utilizing rare earth nanocrystals in electroluminescent devices due to their insulating properties, which hinder efficient current injection and transmission [1][2] - A novel "energy conversion cloak" has been designed to enhance energy transfer to the organic molecular interface of rare earth nanocrystals, providing a breakthrough for electroluminescent applications [1][2] Group 1 - Rare earth nanocrystals possess advantages such as tunable emission colors, narrow emission spectra, and high stability, making them promising candidates for electroluminescent materials [1] - The insulating nature of rare earth materials prevents efficient current injection, unlike semiconductor materials [1] Group 2 - Researchers have innovatively designed a series of functional ligands on the surface of rare earth nanocrystals, allowing for precise energy level structure control and efficient energy distribution to the luminescent ions [2] - This functionalized nanocrystal platform demonstrates potential for high color purity and tunable electroluminescence across various wavelengths [2] Group 3 - The research findings could advance the application of rare earth luminescence in flexible displays, near-infrared devices, and potentially in human health monitoring, non-invasive testing, and crop lighting [2]