| 摘要 |
A solar cell includes: a semiconductor substrate having a first portion and a second portion; an emitter portion of the semiconductor substrate arranged on a front surface of the semiconductor substrate and extending to a rear surface of the first portion of the semiconductor substrate; a first electrode electrically connected to the emitter portion of the semiconductor substrate and arranged on the rear surface of the semiconductor substrate; and a second electrode electrically connected to the semiconductor substrate and arranged on the rear surface of the semiconductor substrate. The first portion of the semiconductor substrate is thinner than the second portion of the semiconductor substrate.
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