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Solar cell with contact structure with small recombination losses as well as methods for manufacturing such solar cells
Solar cell with contact structure with small recombination losses as well as methods for manufacturing such solar cells
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机译：具有低复合损失的接触结构的太阳能电池及其制造方法
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摘要
A concept is for a highly efficient solar cell, in particular on the basis of high-quality crystalline silicon, as well as a process for producing such a solar cell is proposed. In the case of the solar cell (1), a contact structure (3) with the aid of a layers stack arrangement is formed, which a first layer (19) of an electrically insulating material, a second layer (21) is made of a semiconductor material and a third layer (22) are made of an electrically conductive material. The first dielectric layer is in this case, between the substrate (17) and the second semiconducting layer (21) arranged and designed in such a way that a significant tunnels of charge carriers between the substrate (17) and the second layer (21) through the first layer (19) is made possible through. The semiconductor material of the solar cells substrate and the semiconductor material of the second layer due to different band structures have different electrical properties. In this way, a electrons - / hole - selectivity of the tunnel process within the contact structure, can be influenced as a result of recombination losses caused by the contact structure can be reduced significantly.
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