Cascade solar cell with amorphous silicon-based solar cell

摘要

A cascade solar cell structure includes an amorphous silicon-based solar cell 106 arranged in tandem with a non-silicon based solar cell 101. The non-silicon based solar cell may be a gallium arsenide or germanium cell or it may be a dye solar cell, an organic solar cell or a cell based on copper indium gallium selenide (CIGS) material. A conductive interface structure 105 may be provided between the stacked solar cells. The interface structure may comprise a semiconductor tunnel junction, a layer of a transparent conductive oxide material or a very thin metal layer. The cell further includes contact layers 103 and 104.