Sonata is organized around working with specialty materials used iin the manufacture of devices that collect, process, and generate useful forms of energy. The firm's products increase the performance and lower the cost of a wide variety of devices that are the building blocks of a new energy infrastructure: high brightness and specialty LEDs; integrated lasers and receivers; solar photovoltaics; RF devices and high power integrated circuits. The firm's ultra high purity metalorganic products are used in chemical vapor deposition of GaN, InGaN. AlInGaP, GaAs and related materials. ultra high purity metalorganic products are used in chemical vapor deposition of GaN, InGaN. AlInGaP, GaAs and related materials.