| 摘要 |
PURPOSE: A solar cell is provided to improve the efficiency of a solar cell by minimizing the recombination of the carriers on the boundary of a rear protection unit and a substrate. CONSTITUTION: An emitter part(121) is formed on the rear surface of a substrate(110). The emitter part contains a second conductive impurity. A rear field part(122) contains a first conductive impurity. A rear protection unit(150) is formed on the rear surface of the substrate. A first electrode(141) is formed on the rear surface of the emitter part. A second electrode(142) is formed on the rear surface of the rear field part. |
