Green Gap

The Green Gap
How can we bridge it?

The issues relating to the poor performance of Green and Amber LEDs have been well studied and understood. In a report published in 2019, US Department of Energy (DoE) has identified both Green and Amber LEDs as being relatively more underdeveloped than blue and red, an issue commonly known as ‘the green gap’.

Our Solution to Bridge the Green Gap

Kubos’ technology circumvents the performance limiting issues because LEDs based on our cubic- InGaN/GaN show minimal Quantum Confined Stark Effect (QCSE) compared with conventional hexagonal nitride technology. In addition, it avoids the concern relating to poor carrier confinement and the potential for the material to have an indirect bandgap which impacts phosphide based devices. In comparison to hexagonal-GaN technology, cubic LEDs require less indium in the InGaN QW layer to achieve long wavelength emission. This is a benefit over LEDs produced in both non- and semi- polar GaN.

Kubos’ cubic-GaN technology enables a major improvement in the light output particularly in the under-developed region of the visible spectrum (green and amber colours) when compared with the current commercially available LEDs.

Kubos’ proprietary and disruptive cubic-GaN on 3C-SiC/Si is fully compatible with standard LED development process on large Substrates for manufacturing high performance LEDs.