Kyma Technologies Offers Gallium Nitride and Aluminum Nitride Template Product Line

Kyma Technologies, Inc. (Kyma) announced today the addition of high quality gallium nitride (GaN) templates and aluminum nitride (AlN) templates to its growing single-crystal nitride semiconductor substrate product line. Both the AlN and the GaN templates are excellent substrates for use in building a broad range of high performance nitride semiconductor devices.

Kyma's GaN templates are built on sapphire and are available in 2-inch, 3-inch, and 4-inch diameter. They exhibit industry leading low defect densities of ~1x107 cm-2 or lower and are epi ready with a very low surface roughness.

In the field of nitride semiconductors, "GaN template" refers to a composite substrate that in its simplest form is a thin layer of GaN deposited epitaxially on a foreign substrate such as sapphire or silicon carbide. The thickness of the GaN layer is usually between 10 and 250 microns.

Kyma's AlN templates are available with a 1 micron thick AlN layer of highly oriented AlN deposited on sapphire and are also available in 2-inch, 3-inch, and 4-inch diameter. They represent an excellent substrate for production of several different types of advanced nitride semiconductor devices.

"Kyma's nitride based templates offer a low cost substrate approach to achieving a dislocation density of 107 cm-2 while eliminating the need for expensive buffer layer processes that are difficult to control," commented Dr. Ed Preble, Kyma's VP of Engineering. "The use of our GaN and AlN templates offers customers an attractive alternative to heteroepitiaxial growth on sapphire or SiC substrates."

The AlN and GaN template product line is complimentary to Kyma's native GaN substrate product line. Kyma's native GaN substrate products are available with a dislocation density as low as 1x106 cm-2 and are well suited for demanding applications that require a dislocation density less than 1x107 cm-2.

Company president and CEO Keith Evans commented, "While we continue to invest in native GaN substrate manufacturing technology, which we believe represents the best long term solution for most if not all high performance nitride semiconductor devices, there is no denying the importance of template solutions in today's market. It makes sense for Kyma to participate in this portion of the market and to take a leadership role going forward. The addition of GaN and AlN templates to our product portfolio is an important step in providing our customers with greater choice and further drives Kyma's participation in and stimulation of the high performance nitride semiconductor device market."

The manufacturing processes used by the company to make both the GaN templates and the AlN templates benefit from intellectual property (IP) exclusively licensed from North Carolina State University and additional patent-pending IP developed at Kyma.

Both standard and custom GaN and AlN templates are available. Detailed information about Kyma's products can be found on their website at and additional information can be obtained via inquiries directed to

About Kyma Technologies

Based in Raleigh, North Carolina, Kyma Technologies, Inc. was co-founded in 1998 by researchers at North Carolina State University (NCSU). Kyma supplies high quality bulk GaN-based substrates and epiwafers to device manufacturers in both electronic and optical markets, and its mission is to become the preferred supplier of native nitride substrate based materials and device solutions. Kyma has developed a strong IP portfolio including exclusively licensed NCSU patents and its own patented and patent-pending technologies.

For more information about Kyma Technologies, please visit our website, send us e-mail at, or call the company directly at 919.789.8880.

Kyma is a registered trademark of Kyma Technologies, Inc.