Cree, Inc. (Cree) develops and manufactures semiconductor materials and devices primarily based on silicon carbide (SiC), gallium nitride (GaN) and related compounds. It focuses its expertise in SiC and GaN on light emitting diode (LED) products. It also develops power and radio frequency (RF) products. Cree derives the largest portion of its revenue from the sales of its LED products, which includes LED components, LED chips, LED lighting products and SiC wafers. Also included are revenues derived from government agencies to support the development of LED lighting. It also generates revenue from sales of power and RF products. These products include power rectifiers made from SiC, which provide faster switching speeds, and also include RF devices made from SiC or GaN, which allow for higher power densities. Also included are revenues derived from government agencies to support the development of SiC- and GaN-based power and RF technology.