New blue quantum dots promise more energy-efficient displays

Display devices based on quantum dots promise greater power efficiency, brightness and color purity than previous generations of displays. Of the three colors typically required to display full color images—red, green and blue—the last has proved difficult to produce.

A new method developed at the University of Tokyo based on self-organizing chemical structures offers a solution, and a cutting-edge imaging technique to visualize these novel blue quantum dots proved essential to their creation and analysis.

The team produced their blue quantum dot in a different way; when exposed to ultraviolet light, it produces nearly perfect blue light, according to the international standard for measuring color accuracy, known as BT.2020.