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Shielded electrical contact and doping through a passivating dielectric layer in a high-efficiency crystalline solar cell, including structure and methods of manufacture
Shielded electrical contact and doping through a passivating dielectric layer in a high-efficiency crystalline solar cell, including structure and methods of manufacture
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机译:高效晶体太阳能电池中的屏蔽电接触和通过钝化介电层的掺杂,包括结构和制造方法
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摘要
Solar cell structures and formation methods which utilize the surface texture in conjunction with a passivating dielectric layer to provide a practical and controllable technique of forming an electrical contact between a conducting layer and underlying substrate through the passivating dielectric layer, achieving both good surface passivation and electrical contact with low recombination losses, as required for high efficiency solar cells. The passivating dielectric layer is intentionally modified to allow direct contact, or tunnel barrier contact, with the substrate. Additional P-N junctions, and dopant gradients, are disclosed to further limit losses and increase efficiency.
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