Daejoo Electronic Materials Co. Phosphors & Quantum Dots | Sponsors & Exhibitors Headquartered near Seoul, S. Korea, Daejoo Electronic Materials has developed and supplied key materials in electronic industries for the past 40 years. We are devoting significant resources to research and develop major materials for the next generation products utilizing our phosphor powders for display/lighting, as well as environmental/energy materials for solar cells and Lithium-Ion batteries. In particular, we have succeeded in developing phosphor plates suitable for high power LED in high temperature/humidity environments and are supplying them to worldwide automotive component companies. Daejoo Electronic Materials is ready to become your best partner! Contact Daejoo Electronic Materials Co.