affordable quality of light

Market Requirements

Today’s applications demand color quality and efficient performance at a competitive price point. Commercial planar high-brightness LEDs predominantly employ phosphor conversion to create white light. White light is perceived when blue or near–UV light from the LED chip is mixed with yellow light that is emitted from the phosphor. A majority of these LEDs exhibit a CRI (Color Rendering Index) in the range of 70-85.

The market requires affordable lighting solutions that are comparable in light quality to traditional halogen / incandescent and high intensity discharge lamps with CRI values in the range of 95+.

Illumination image

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High CRI White LED Without Phosphor Conversion

glō’s technology makes it possible to grow RGB (red, green and blue) nanowires on one single substrate, enabling homogeneous mixing of primary colors at the wafer level. This will provide a true white LED without the need for phosphor conversion. Hence all the disadvantages associated with phosphor-converted white LEDs, such as low CRI, efficiency losses and droop, are eliminated using nanowire LEDs.

glō’s nLEDs have the active layers grown on the crystallographically favorable non-polar m-plane. Color shift and efficiency droop with increasing temperatures, currents and time, which is strongly observed with commercially available planar LEDs, can be reduced to a minimum.

Competitive Cost

glō’s technology and process technology has already demonstrated that nanowires can be grown on various substrates such as sapphire and silicon utilizing standard industry process equipment and materials. By moving the fabrication process of nanowires to large size Si-substrates, where globally enough foundry capacity is available, the cost of such devices will eventually be more competitive than today’s planar-types LEDs, grown on relatively expensive small diameter sapphire wafers.

Packaging of glō’s nLED chips can be implemented by any existing LED backend assembly line around the world. Finally there are no related IP cross-license premiums to be paid to the LED syndicate.