Scientists Have Developed New Methods To Dramatically Improve The Brightness And Stability Of LED Light-emitting Nanocrystals
Mar 28, 2022
Researchers and partners from Brookhaven National Laboratory, Los Alamos National Laboratory and SLAC National Accelerator Laboratory report that they have prepared stable perovskite nanocrystals for this LED.
The team's work is described in a paper published in nature Photonics. "Our research shows that this method allows us to dramatically improve the brightness and stability of luminescent nanocrystals." Comments Xuedan Ma, a scientist at the Argonne Center for Nanomaterials.
Perovskite nanocrystals are the main candidate of a new LED material. But it has proved unstable in tests for quite some time.
The team stabilized the nanocrystals in porous structures called metal-organic frameworks (MOF).
Based on abundant materials on Earth and manufactured at room temperature, these leds could one day lead to lower-cost TVS and consumer electronics, as well as better gamma-ray imaging devices and even self-powered X-ray detectors for medicine, security scans and scientific research.
"We solved the stability problem by encapsulating perovskite materials in MOF structures," said scientists at the Argonne Nanomaterials Center (CNM) in the DOE's Office of Science User Facilities. "Our research shows that this approach can help to greatly improve the brightness and stability of luminescent nanocrystals."
