Copper Indium Gallium Sulfur Selenide is the basis for production of CIGSS-based thin film solar cells. To deposit high quality CIGSS thin films, various physical vapor deposition methods are used. These methods include sputtering and evaporation. CIGSS thin film solar cells are most commonly prepared by rapid thermal processing and selenization using diethylselenide. Recent research on CIGSS powders show CIGSS thin films can be obtained by CIGSS powder evaporation. The CIGSS powder evaporation method can potentially provide a low cost and simple thin film solar cell fabrication process. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available.