In mid-September, I delivered a presentation on OLED manufacturing and markets at the Crystal Valley Conference and Exhibition (CVCE) in Cheonam, Korea. I mentioned quantum dots and Quantum Dot Enhancement Film (QDEF) as technologies that might slow the market penetration of OLEDs. During the Q&A, Jacky So (Prof. of Materials Science and Engineering at the Univ. of Florida) asked a question I couldn’t answer, and it’s an obvious one: What is quantum dot lifetime in general, and the lifetime of QDEF in particular? Professor So also speculated that the material system involved might give QDs an inherent lifetime disadvantage compared to OLEDs.