Reference News, November 24 report: According to the Russian Sputnik news agency, on November 24, a breakthrough research result jointly completed by Heilongjiang University, Tsinghua University and the National University of Singapore was officially published in the British "Nature" weekly, successfully solving the world problem of efficient electro-luminescence of insulating rare earth nanocrystals. This study provides key core technology support for China's strategic transformation of rare earth resources from "raw material exports" to "high-value-added technology exports".
The report stated that rare earth elements are irreplaceable strategic resources, known as the "vitamin of industry." China has advantages in rare earth resource reserves and smelting, but still faces industrial bottlenecks in terminal high-end functional materials and devices. Lanthanide-doped nanocrystals have excellent properties as ideal luminescent materials, such as high color purity and good stability, but due to their inherent "insulation" characteristics, they cannot be directly lit by electric current, and their high-value optoelectronic applications have long been hindered.
Facing this bottleneck that restricts the high-end application of rare earth materials, the research team proposed an innovative strategy of organic semiconductor sensitization, using functionalized organic ligands as "photoelectric bridges," successfully transferring energy accurately and efficiently to insulating rare earth nanocrystals, achieving efficient luminescence under current drive.
This technology shows great application potential: the efficiency of electroluminescent devices is increased by 76 times, and full-spectrum light emission can be achieved in a single device through regulation of rare earth ions. This marks a key breakthrough in China's high-end optoelectronic application of rare earths, providing a new material system for developing next-generation information technologies such as ultra-high-definition displays, near-infrared communication, and biomedical applications.
This breakthrough has successfully opened up a technical path to convert the properties of rare earth materials into the functions of high-end devices, making a substantial contribution to enhancing the independent innovation capabilities and terminal product value-added of China's rare earth industry chain.
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