IQE is a holding company. Through its subsidiaries, Co. is engaged in the development, manufacture and sale of semiconductor materials. Co.'s primary business is the manufacture of compound semiconductor wafers or epiwafers using a process called epitaxy. Co.'s primary reporting segments are: Wireless, which covers electronic devices that communicate wirelessly; Photonics, which covers applications that either emit or detect light; Infrared, which uses indium antimonide and gallium antimonide engineered materials that enable high resolution Infrared systems; and CMOS++, which combines the properties of compound semiconductors with silicon.