Rigid copper iodide nanoclusters offer environment-friendly, low-cost, scalable healthy lighting

https://phys.org/news/2024-09-copper-iodide-nanoclusters-environment-friendly.html

"avoids: harmful blue-violet components, rare-earth (Y, Ce) or toxic (Cd, Pb) metals, color shift, discrepant emitter degradation rates leading to emission spectra instability... ultra-broadband nanocluster LEDs, high luminescent efficiency (up to 60%), uniform/ compact morphology, excellent ambient/ thermal stability based on environment-friendly emitters... 1-step solution synthesis-deposition, 13% quantum efficiency, 50K nits luminance, 137 h half-lifetime... decent efficiency roll-off"