High color purity quantum dots enable QLEDs with record external quantum efficiency/ exceptional luminescence and operational stability

https://www.eurekalert.org/news-releases/1075363

"facile high-temperature successive ion layer adsorption and reaction grows high-quality, large-particle, alloyed red quantum dots... alleviates compressive strain, suppresses heavy-hole energy band splitting, weakens exciton-phonon coupling, enhancing luminescence color purity... Zn₁₋ₓCdₓSe/ZnSe/ZnS shells confine carriers within luminescent core, boosting photoluminescence quantum yield, and surface defects passivized facilitating hole injection, achieving more balanced carrier recombination in the QLEDs"