P-type back junction contact solar cell module
The invention relates to the technical field of solar cells, and discloses a P-type back junction contact solar cell module, which comprises a P-type silicon wafer, an NP junction and a silicon oxide antireflection film, the front surface of the P-type silicon wafer is provided with the NP junction,...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to the technical field of solar cells, and discloses a P-type back junction contact solar cell module, which comprises a P-type silicon wafer, an NP junction and a silicon oxide antireflection film, the front surface of the P-type silicon wafer is provided with the NP junction, the NP junction is used as the negative electrode of the solar cell, the front surface of the NP junction is provided with the silicon oxide antireflection film, and the silicon oxide antireflection film is used as the negative electrode of the solar cell. A positive metal electrode is arranged in the silicon oxide antireflection film, and a P + layer is arranged on the reverse side of the P-type silicon wafer. According to the P-type back junction contact solar cell module, the back surface of the back contact solar cell is provided with the grooves, and the number of the grooves corresponds to the number of the NP junctions, so that after ohmic contact is formed between metal and the substrate, a large number of |
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