Optoelectronic semiconductor nanocrystals with bright ground-state excitons

https://phys.org/news/2024-07-scientists-class-semiconductor-nanocrystals.html

"nanocrystals exhibit dark excitons, where lowest-energy exciton is poorly emitting, slowing light emission of light, limiting nanocrystal-based device performance... Now, U.S. Naval Research Laboratory has found at least 4 nanocrystals whee lowest-energy exciton emission are ultrabright, overcoming this limitaion...  also, can emit light across broad spectrum, from IR to UV... better, more efficient LEDs, solar cells, photodetectors, lasers"