Brown University and QD Vision Inc. engineers have created nanoscale single crystals that produce the red, green, or blue laser light in digital displays.
All of the pyramid-shaped quantum dots are made the same way, of the same elements. In experiments, light amplification required much less power than previous attempts at the technology. These are the first lasers of their kind.
The materials in prototype lasers described in the paper are “nanometer-sized semiconductor particles called colloidal quantum dots or nanocrystals with an inner core of cadmium and selenium alloy and a coating of zinc, cadmium, and sulfur alloy and a proprietary organic molecular glue,” according to a Brown University article.
The coated pyramids require 1,000 times less power to produce laser light than previous attempts at the technology because of their improved quantum mechanical and electrical performance.
