First, we must ask what value Quantum Dots might deliver in LED lighting? In general lighting, QDs can enable simultaneously achieving high efficacy and high CRI (color rendering index) values. Overall, the efficacy penalty in boosting the CRI is very heavy. In 2019, Osram launched a LED light with on-chip QD, achieving 173lm/W with 90 CRI. Lumileds had demonstrated similar results using the same base QD technology a year or so earlier. These cases improved efficiency by some 8-10% at CRI 90 compared to leading non-QD narrowband red emitters. These results clearly demonstrate the success of QDs in weakening the trade-off between lm/W efficacy and CRI, an important measure of color quality. Dr. Khasha Ghaffarzadeh, research director at IDTechEx, discusses the challenges and prospects faced by QDs in the general lighting market. This draws from the research firms report "Quantum Dot Materials and Technologies 2020-2030: Trends, Markets, Players" which offers a detailed anal