| 摘要 |
<p>There has not been in the prior art, with respect to a solar cell having a subwavelength structure, a method for both reducing the recombination loss inside the subwavelength structure and using a pattern electrode as the surface electrode. In response, this invention is a solar cell including: a first-conductivity-type (p-type) substrate (1) equipped with a plurality of pillars (2) extending in a predetermined direction; and an emitter layer (11) of a second conductivity type (n-type), which is different from the first conductivity type, provided in contact with the substrate. The solar cell is structured so that the pillars comprise a first-conductivity-type semiconductor, and a side surface of each of the pillars is in contact with the emitter layer. This structure makes it possible to both reduce the recombination loss inside the subwavelength structure and use a pattern electrode as the surface electrode, in contrast with conventional solar cells.</p> |
