Technologies

Using highly efficient deep green colloidal CdSe quantum dot emitters, Dot Metrics Technologies of Charlotte, NC has successfully integrated colloidal quantum dots as the active layer in a GaN heterostructure to create a LED. This device represents a novel approach and innovation in the fabrication of LEDs, and this design concept may be used to develop efficient LEDs across the entire color spectrum.

All color displays from cell phones to televisions are based on a red, green, and blue (RGB) color scheme. Highly efficient light emitting diodes (LEDs) can be manufactured which emit either red or blue light at opposite ends of the visible spectrum. Until the Dot Metrics innovation, there is no material for use in standard LED manufacturing that provides efficient deep green (555-585nm) emission in the middle of the visible spectrum.

Current technology is limited by the lack of an efficient deep green LED, but this revolutionary new approach to LED manufacturing circumvents the material limitations of a traditional LED design. With the successful development of this new LED chip Dot Metrics Technologies has opened the door to many applications considered unfeasible due to lack of an efficient green device.

Visible broadband emission from one device on a 2 inch wafer containing thousands of devices