Thin-Film Photovoltaic Cell

The optimal photovoltaic properties of CuInSe2 are exploited in a new cell configuration: n-CuInSe2/CuIn2Se3I/p-CuISe3. The cell components and structure are being assessed and adapted for a high energy density power system that is environmentally safe, low cost, low maintenance, reliable, lightweight, efficient and radiation tolerant. The new cell obviates the prevailing concerns associated with the p-CuInSe2/n-CdS cell while retaining the thin-film attributes of the radiation-hard CuInSe2. Non-hazardous and compatible constituents, low interface-state density and better mechanical stability are envisioned to produce a highly efficient photovoltaic device that can safely withstand space environments. Applications range from powering consumer products, communication satellites, and remote locations to utility and space power systems.