Abstract
Flexible thin film solar cells have many promising applications in space and terrestrial photovoltaic power systems. In this work polycrystalline thin films of copper indium diselenide (CuInSe2) were deposited on flexible metal foil substrates using the selenization technique. In this method E-beam evaporated CuIn precursor layers were reacted with an atmosphere containing H2Se gas at around 400°C to obtain CuInSe2. Mo, Ti and Al foils were evaluated as possible substrate materials for CuInSe2 solar cells. Flexible devices of Mo/CuInSe2/CdS/ZnO heterojunction structure were fabricated on Mo foil substrates with a conversion efficiency of above 8%.
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