Crystal IS makes materials -- specifically, single-crystal aluminum nitride substrates -- for the semiconductor industry. Crystal IS's nitride substrates are the materials chip makers use to make high-power, high-temperature, and optoelectronic semiconductors for ultraviolet, high-power radio-frequency, solid-state LED lighting, biomedical, wireless communications, microwave, and other applications. The company is working to increase the size, growth rate, and yield of its substrates in order to produce higher-quality wafers at lower costs; it is working to commercialize a 5cm diameter substrate. Crystal IS is a subsidiary of Asahi Kasei.