Color mixing involves combining different colors to create new ones. For example, red and green can be mixed to make yellow, blue and red can be mixed to make purple, and red, green, and blue can be mixed to make white. This process is crucial for the future of solid-state lighting, with LED color mixing offering a higher theoretical maximum efficiency compared to current methods. Researchers at the University of Illinois Urbana-Champaign have made a breakthrough in this area, developing a green-emitting cubic III-nitride active layer with 32% internal quantum efficiency (IQE), which is a significant improvement over existing technology. The goal is to triple the efficiency of white light emitting diodes, and this innovation represents a major step forward. The findings of this research have been published in Applied Physics Letters. Currently, the most efficient white LEDs use blue light emitting diodes with a rare-earth phosphor coating to achieve white lighting through a process called phosphor down-conversion. This new development has the potential to revolutionize the field of solid-state lighting. For more information, you can visit phys.org.
2024-01-24 04:00:04